Ethiopia Health Infrastructure Program (EHIP)

Ethiopia Health Infrastructure Program (EHIP)

Health Centers Water Supply

Technical Specifications October 2017

This publication was produced for review by the United States Agency for

International Development. It was prepared by Tetra Tech, Inc.

USAID/EHIP Water Supply Oct 2017

Table of Contents

TABLE OF CONTENTS

DIVISION 01 – GENERAL CONDITIONS 011000 012500 013100 013200 013300 015000 016000

SUMMARY SUBSTITUTION PROCEDURES PROJECT MANAGEMENT & COORDINATION CONSTRUCTION PROGRESS DOCUMENTATION SUBMITTAL PROCEDURES TEMPORARY FACILITIES & CONTROLS PRODUCT REQUIREMENT

DIVISION 03 – CONCRETE 033000 CAST-IN-PLACE CONCRETE DIVISION 04 - MASONRY 042000 MASONRY DIVISION 05 – METAL 051200 STRUCTURAL STEEL DIVISION 22 – PLUMBING 220513 221113

COMMON MOTOR REQUIREMENT FOR PUMPS FACILITY WATER DISTRIBUTION PIPING & STORAGE

DIVISION 26 – ELECTRICAL SYSTEMS 260500 ELECTRICAL SYSTEMS DIVISION 31 - EARTHWORK 312000 EARTH MOVING DIVISION 33 – UTILITIES 332100 WATER SUPPLY WELLS DIVISION 48 – PHOTOVOLTAIC SYSTEMS 481400 SOLAR POWER SYSTEM GENERAL 481410 PHOTOVOLTAIC MODULES, COMBINER BOXES & RACKING 481425 INVERTERS & CHARGER CONTROLLERS 481430 GELLEY DEEP CYCLED BATTERIES

—END TABLE OF CONTENTS—


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SECTION 011000 - SUMMARY

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Project information. 2. Work covered by Contract Documents. 3. Work under separate contracts. 4. Access to site. 5. Work restrictions. 6. Specification and drawing conventions. 7. Pre-construction requirements. 8. Construction requirements. 9. Sources of supply & quality of source materials. 10. Key personnel. 11. Special conditions. 12. Mobilization & demobilization. 13. Contractor’s equipment & materials delivery forecast. 14. Permits & responsibilities/customs. 15. Health, safety, & security. 16. Environmental compliance & management. 17. Media communication.

B. Related Requirements:

1. Section 015000 "Temporary Facilities and Controls" for limitations and procedures governing temporary use of Owner's facilities.

1.3 PROJECT INFORMATION

A. Project Identification: EHIP Health Centers Water Supply

1. Project Locations:

CLIN 1/ Group 1 Site 1.1 Haro Health Center (Yirga Chefe wereda of Gedeo zone) Site 1.2 Gerbicho Health center (Aleta Wondo wereda of Sidama zone) CLIN 2 / Group 2 Site 2.1 Gelsha Health Center (Dessie Zuria wereda of South Wollo zone)


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Site 2.2 Addis Betechristian Health Center (Fogera wereda of South Gondar zone) Site 2.3 Maksegnit Health Center (Andabet wereda of South Gondar zone) Site 2.4 Gult Health Center (Andabet wereda of South Gondar zone) CLIN 3 / Group 3 Site 3.1 Agumamit Health Center (Jabi Thahnan wereda of West Gojam zone) Site 3.2 Kuni Health Center (Jabi Thahnan wereda of West Gojam zone) Site 3.3 Gulem Dejen Health Center (Burie wereda of West Gojam zone) CLIN 4 / Group 4 Site 4.1 Kachena Gudie Health Center (Dangela wereda of Awi zone) Site 4.1 Lideta Health Center (Banja wereda of Awi zone)

B. Owner: United States Agency for International Development (USAID)

C. Engineer: Tetra Tech Inc.

1. Engineer has been engaged for this Project to serve as an advisor to Owner and to provide assistance in administering the Contract for construction between Owner and Contractor, according to a separate contract between Owner and Engineer.

1.4 WORK COVERED BY CONTRACT DOCUMENTS

A. The Work of Project is defined by the Contract Documents and consists of the following:

1. The construction of water supply sources to meet the water demand of the various health centers. The work includes drilling of boreholes, development and pump testing of the drilled wells, water quality testing, completion of the boreholes, disinfection, design and installation of electro-mechanical equipment, construction of water lines to convey water to elevated water storage tanks located in the health centers’ compound (elevated tanks constructed by others), photovoltaic (PV) system installation, and other Works indicated in the Contract Documents.

B. Type of Works Contract:

1. Firm Fixed Price Contract.

1.5 WORK UNDER SEPARATE CONTRACTS

A. General: Cooperate fully with other contractors (if any) so that work on their contracts may be carried out smoothly, without interfering with or delaying work under this contract or other contracts. Coordinate the work of this contract with work performed under separate contracts.

B. Preceding Work: Owner has awarded the following construction operations at Project site. Those operations are scheduled to be substantially complete before Work under this Contract begins.

1. Construction of Health Centers, including multiple building structures, utilities and site work.


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1.6 ACCESS TO SITE

A. General: Each Contractor shall have full use of Project site for construction operations during construction period. Contractor's use of Project site is limited only by Owner's right to perform work or to retain other contractors on portions of Project.

B. Condition of Existing Buildings: Maintain portions of existing buildings and other structures affected by construction operations under this contract throughout the construction period. Repair damage caused by construction operations under this contract.

C. Condition of Existing Grounds: Maintain portions of existing grounds, landscaping, and hardscaping affected by construction operations throughout construction period. Repair damage caused by construction operations.

1.7 WORK RESTRICTIONS

A. Work Restrictions, General: Comply with restrictions on construction operations.

1. Comply with limitations on use of public streets and with other requirements of authorities having jurisdiction.

B. On-Site Work Hours: Limit work in the existing building area to working hours between 8:30 a.m. and 5:30 p.m., Monday through Friday, unless otherwise indicated.

1. Weekend Hours: To be approved in advance by CO or COR. 2. Early Morning & Late-night Hours: To be approved in advance by CO or COR. 3. Hours for Utility Shutdowns: To be approved in advance by CO or COR. 4. Hours for Drilling & Testing: To be approved in advance by CO or COR.

1.8 SPECIFICATION AND DRAWING CONVENTIONS

A. Specification Content: The Specifications use certain conventions for the style of language and the intended meaning of certain terms, words, and phrases when used in particular situations. These conventions are as follows:

1. Imperative mood and streamlined language are generally used in the Specifications. The words "shall," "shall be," or "shall comply with," depending on the context, are implied where a colon (:) is used within a sentence or phrase.

2. Specification requirements are to be performed by Contractor unless specifically stated otherwise.

B. Division 01 General Requirements: Requirements of Sections in Division 01 apply to the Work of all Sections in the Specifications.

C. Drawing Coordination: Requirements for materials and products identified on Drawings are described in detail in the Specifications. One or more of the following are used on Drawings to identify materials and products:

1. Terminology: Materials and products are identified by the typical generic terms used in the individual Specifications Sections.

2. Abbreviations: Materials and products are identified by abbreviations scheduled on Drawings.


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3. Keynoting: Materials and products are identified by reference keynotes referencing Specification Section numbers found in this manual.

1.9 PRE-CONSTRUCTION REQUIREMENTS

A. Provide all site surveys, geotechnical testing, and all pre-design investigations, surveys and activities necessary or reasonably inferable to successfully complete the Project.

1.10 CONSTRUCTION REQUIREMENTS

A. Provide all labor, supervision, materials, equipment, construction means and methods, coordination, logistics, testing, surveys and tools necessary or reasonably inferable to complete the Project.

B. Provide operations and maintenance for all new and temporary facilities until Final Acceptance by USAID/Ethiopia.

C. Provide all temporary works, utilities and/or facilities necessary for the successful performance of this contract (e.g. water, power, sanitation, communications, etc.).

D. Protect all existing buildings and facilities from damage or detrimental impacts resulting from construction activities on the Project site.

E. Be responsible for coordinating with local utility providers. The Contractor shall pay all costs incurred in connecting, converting, and transferring the utilities to the work. The Contractor shall make connections, including providing backflow-preventing devices on connections to domestic water lines as necessary; providing meters; and providing transformers; and make disconnections.

F. Provide quality management to ensure that all work adheres to the applicable standards in the Specifications for all construction methods, materials, labor, equipment, and testing.

G. Cooperate and coordinate with the COR and Engineer at all times.

H. Provide a three-hundred sixty five day warranty period for all completed works, which shall commence at Final Acceptance by USAID/Ethiopia.

I. Be responsible for providing all health and safety and security services required for its personnel deployed to project locations, unless otherwise stated herein.

1.11 SOURCE OF SUPPLY AND QUALITY OF SOURCE MATERIALS

A. The Contractor shall furnish only new materials and supplies for incorporation into the Work, except as specifically otherwise permitted in the Contract. Materials shall comply with the terms and conditions of the contract. Materials shall be subject to inspection by USAID and/or its Engineer at any time. The quality of all materials shall conform to requirements listed in the Technical Specifications.

B. Manufacturers test reports may supplement Contractor's inspections, sampling, testing, and certification provisions for new materials. Manufacturers’ warranties, guarantees, instruction sheets, parts lists, and other material that are furnished with certain articles or materials incorporated into the project shall be provided to the COR and Engineer with each Application of Payment.


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C. Materials to be installed and incorporated into the Work shall be stored in such a manner as to ensure the preservation of their quality and fitness for the Work, and to facilitate inspection.

1.12 KEY PERSONNEL

A. The performance of this contract requires the use of key personnel. All key personnel shall have fluent English language proficiency to effectively communicate at a level of technical competency with the COR and/or the Engineer. All key personnel shall be located and present at the construction site on a full time basis throughout the construction period, unless otherwise pre-approved in writing by the COR. During the absence of any Key Personnel, the Contractor shall have an equal alternate person on site during any construction activities. All alternates shall be submitted to the COR for review and approval no later than seven (7) calendar days prior to use.

B. The Contractor shall consider all Key Personnel to be essential to the work performed and successful implementation of the contract. Replacement of key personnel cannot be made by the Contractor without the written consent of the CO. The listing of Key Personnel may, with the consent of the CO, be amended during the course of the contract to add, change or delete personnel and positions as appropriate.

C. The Contractor shall assign the following Key Personnel with 100% Level of Effort (LOE) dedicated to this Contract. The Contractor may utilize a different organizational system if desired, providing the following key functions are clearly included and defined:

1. Project Manager

The Project Manager shall, at a minimum, have a bachelor’s or other relevant technical degree (such as hydrogeology) with 10 years of relevant experience. The Project Manager shall, at a minimum,

i. Have the authority and responsibility for the execution of the Project.

ii. Act as agent of and be the single point of contact on behalf of the Contractor. iii. Have the authority to execute the requirements of the contract.

2. Quality Manager

The Quality Manager shall, at a minimum, have a bachelor’s or other relevant technical degree with 10 years of relevant experience. The Quality Manager will be responsible in ensuring all construction activities are done in accordance with the specifications and quality requirements.

3. Chief Driller

The Chief Driller shall, at a minimum, have a bachelor’s or other relevant technical degree with 10 years of relevant experience. Fifteen (15) years of commensurate rele-vant experience without a formal aforementioned technical degree is also acceptable.

4. Chief Mechanic

The Chief Mechanic shall, at a minimum, have a bachelor’s or other relevant technical degree with 10 years of relevant experience. Fifteen (15) years of


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commensurate relevant experience without a formal aforementioned technical degree is also acceptable.

1.13 SPECIAL CONDITIONS

A. Language

All Key Personnel shall have adequate English language proficiency. All correspondence, documents, reports, submittals, photographs and submissions produced per the performance of this contract shall be in the English language. At all times when any performance of the work at the site is being conducted by any member of the Contractor or its Sub-Contractors, the Contractor shall have at minimum one Key Personnel or approved alternate present on the site serving as the Construction Site Representative, capable of explaining the work operations, receiving instructions and effecting necessary documentation and reporting in the English language. The COR shall have the right to determine, without appeal of such decision, whether the proposed representative has sufficient technical and linguistic capabilities, and the Contractor shall immediately replace any individual not acceptable to the COR.

1.14 MOBILIZATION AND DEMOBILIZATION

A. The Contractor shall submit a Mobilization Plan to the COR for review and approval. At a minimum, the Mobilization Plan shall include a mobilization narrative that includes all mobilization activities including, but not limited to:

1. Key equipment, personnel, materials and supplies required to commence construction.

2. Anticipated arrival date to site of all construction labor, equipment and materials. 3. Arrival of key Contractor personnel, Sub-Contractors, construction and layout of

temporary site facilities.

B. The Contractor shall submit a Demobilization plan to the COR for review and approval. At a minimum, the plan shall include personnel and equipment demobilization activities and the schedule of demobilization activities. The Contractor shall clearly state any impacts demobilization will have on current construction activities or operations.

C. Removal of temporary facilities: The Contractor shall properly remove and dispose of all temporary facilities within seven (7) calendar days prior to Final Acceptance. Upon removal, the Contractor shall restore substrates and sub-grade base, including areas to be paved or otherwise finished prior to Final Acceptance.

1.15 CONTRACTOR’S EQUIPMENT AND MATERIALS DELIVERY FORECAST

A. The Contractor shall submit an Equipment, Materials and Plant Delivery Forecast to the COR for review and approval for all significant materials and equipment necessary for successful completion of the contract. The listing shall contain target and actual procurement and delivery dates. All target dates shall be based on the requirements established in the approved baseline schedule. The Contractor shall update the forecast on a monthly basis.

B. The forecast shall clearly indicate all materials and equipment that may be difficult or impossible to procure within the local market.


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1.16 PERMITS AND RESPONSIBILITIES/CUSTOMS

A. The Contractor shall be responsible for obtaining any necessary licenses and permits, and for complying with any GOE laws, codes, and regulations applicable to the performance of the work. The Contractor shall also be responsible for all materials delivered and work performed until completion and acceptance of the entire work, except for any completed work which may have been accepted under the Contract.

B. The Contractor shall be responsible to facilitate land acquisition, with the support of USAID and the woreda, for works that are done outside of the health centers compound, on lands owned by the government and the people. The Contract shall communicate and coordinate with the local and regional administration/government for any land acquisition related issues. The Contractor shall notify USAID the progress of the land acquisition process and any problems that arise during the process.

C. Contractor shall inform the COR, in writing, if any reasonable assistance is needed, however, this assistance shall not relieve the Contractor of any primary responsibility for these tasks nor shall the Contractor hold USAID liable for any delays, damages or inabilities to assist in issues.

D. The Contractor may request the COR, in writing, if any reasonable assistance is needed in the permit clearance process. However, a request for assistance shall not relieve the Contractor of any responsibility or obligation for these tasks, nor shall the Contractor hold USAID liable for any delays, damages or inabilities to assist.

E. The Contractor shall manage the customs clearance process for all imported construction materials, supplies and equipment.

1.17 HEALTH, SAFETY, AND SECURITY

A. The Contractor submit a Health and Safety Plan (HASP) to the COR for review and approval. The COR, Engineer or other identified person on site shall be authorized to stop any activity that is considered to be immediately life threatening or in violation of the Environmental Monitoring and Mitigation Plan (EMMP) to be provided. The Contractor shall be responsible for correcting the situation before any further work can progress associated with that activity or set of activities. Any loss of time or cost due to the stoppage shall be solely borne by the Contractor.

B. At a minimum, the Health and Safety Plan shall contain the following: 1. Required use of appropriate clothing, including personal protective equipment. At a

minimum, the Contractor shall require all workers to wear safety glasses, high-visibility vests, hard hat and covered shoes at all times. The Contractor will provide the safety equipment to workers if necessary, and will replace equipment that is damaged or deemed unacceptable by the COR.

2. Information about hazards to which workers can be exposed, including chemicals. 3. Locations and availability of toilet, hand-washing, and drinking water facilities. 4. List of site first aid equipment. 5. For injuries that require professional medical treatment, list contact information for

the nearest health center and hospital. 6. List of site Health, Safety, and Security leaders responsible for implementing the

plan. 7. General contents of weekly Health, Safety, and Security briefings. Attendance shall

be required of all site workers. During the briefings, the Contractor shall provide


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specific instructions to each employee regarding hazards unique to his or her job assignment.

8. Process for reviewing and approving Sub-Contractor health and safety plans. Procedure for protecting the health and safety of visitors to the site.

C. The Contractor is required to adhere to the following additional Health, Safety, and Security requirements:

1. The Contractor shall track and replace damaged equipment, which at a minimum shall include: safety glasses, high-visibility vests, covered shoes, hard hats, hearing protection, safety harnesses, safety equipment for working underground and in confined spaces (e.g. tankers, chambers etc.) fire extinguishers, first aid equipment and, where appropriate, associated shock absorbers, and chest harnesses.

2. The Contractor shall inspect, test, and maintain safety equipment, scaffolds, guardrails, working platforms, hoists, ladders and other means of access, lifting, lighting, signing, and guarding equipment. Items that are unsafe will be removed from the Site and replaced.

3. Health and Safety records must be maintained and updated weekly. The records must be available for on-site inspection. At a minimum, the records must include dates and attendance of Health and Safety briefings, equipment inspection and results, site visitors’ log, descriptions of Health and Safety incidents (e.g., injuries).

4. The Contractor shall document every accident or incident associated with health and safety on site. In the case of any serious accident or incident, such as fatality or serious injury, the Contractor shall notify the COR/Engineer immediately by the quickest available means. For each serious accident or incident, the Contractor shall conduct a detailed investigation and provide a comprehensive report to the COR and Engineer addressing:

i. What occurred (with explanatory sketches or photos as necessary)

ii. Who was involved (including names and affiliations of such persons) iii. What caused the incident iv. When the incident occurred (time and date) v. Where the incident occurred

vi. Why the incident occurred vii. How the Contractor will prevent reoccurrences

5. The Contractor is responsible for maintaining uninterrupted security for all personnel, materials, equipment, and all other property related to the performance of this Contract. The Contractor’s site security shall include 24-hour security guards and perimeter fencing (or other appropriate barrier) that fully encloses the site

1.18 ENVIRONMENTAL COMPLIANCE AND MANAGEMENT

A. The Foreign Assistance Act of 1961, as amended, Section 117 requires that the impact of USAID’s activities on the environment be considered and that USAID include environmental sustainability as a central consideration in designing and carrying out its development programs. This mandate is codified in Federal Regulations (22 CFR 216) and in USAID’s Automated Directives System (ADS) Parts 201.5.10g and 204 (http://www.usaid.gov/policy/ads/200/), which, in part, require that the potential environmental impacts of USAID-financed activities are identified prior to a final decision to proceed and that appropriate environmental safeguards are adopted for all activities.

B. Pursuant to 22 CFR 216 and the Initial Environmental Examination (IEE) covering this contract, The contractor shall produce an Environmental Mitigation and Monitoring Plan (EMMP) that identifies environmental risks, mitigations measures, and a monitoring plan


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has been prepared to guide construction and operations. Any ongoing activities found to be outside the scope of the approved Regulation 216 environmental documentation shall be halted until an amendment to the documentation is submitted and written approval is received from the COR. The contractor shall also notify the COR of any implemented site changes which modify plans established within the EMMP. In addition, the Contractor must comply with host country environmental regulations.

1.19 MEDIA COMMUNICATION

A. The Contractor shall refer all requests for information from any source to USAID. The contractor shall not answer any questions or provide any information related to this project except to provide the COR contact information.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000


012500-1

SECTION 012500 - SUBSTITUTION PROCEDURES

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes administrative and procedural requirements for substitutions.

1.3 DEFINITIONS

A. Substitutions: Changes in products, materials, equipment, and methods of construction from those required by the Contract Documents and proposed by Contractor.

1. Substitutions for Cause: Changes proposed by Contractor that are required due to changed Project conditions, such as unavailability of product, regulatory changes, or unavailability of required warranty terms.

2. Substitutions for Convenience: Changes proposed by Contractor or Owner that are not required in order to meet other Project requirements but may offer advantage to Contractor or Owner.

1.4 ACTION SUBMITTALS

A. Substitution Requests: Submit three copies of each request for consideration. Identify product or fabrication or installation method to be replaced. Include Specification Section number and title and Drawing numbers and titles.

1. Documentation: Show compliance with requirements for substitutions and the following, as applicable:

a. Statement indicating why specified product or fabrication or installation method cannot be provided, if applicable.

b. Statement indicating why specified product requirement cannot be provided and what is being substituted, if applicable.

c. Coordination of information, including a list of changes or revisions needed to other parts of the Work and to construction performed by Owner and separate contractors that will be necessary to accommodate proposed substitution.

d. Detailed comparison of significant qualities of proposed substitutions with those of the Work specified. Include annotated copy of applicable Specification Section. Significant qualities may include attributes, such as performance, weight, size, durability, visual effect, sustainable design characteristics, warranties, and specific features and requirements indicated. Indicate deviations, if any, from the Work specified.

e. Product Data, including drawings and descriptions of products and fabrication and installation procedures, if requested by USAID.

f. Samples, where applicable or requested, if requested by USAID.


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g. Certificates and qualification data, where applicable or requested, if requested by USAID.

h. List of similar installations for completed projects, with project names and addresses as well as names and addresses of engineers and owners, if requested by USAID.

i. Material test reports from a qualified testing agency, indicating and interpreting test results for compliance with requirements indicated, if requested by USAID.

j. Detailed comparison of Contractor's construction schedule using proposed substitutions with products specified for the Work, including effect on the overall Contract Time. If specified product or method of construction cannot be provided within the Contract Time, include letter from manufacturer, on manufacturer's letterhead, stating date of receipt of purchase order, lack of availability, or delays in delivery, , if requested by USAID.

k. Cost information, including a proposal of change, if any, in the Contract Sum, if requested by USAID.

l. Contractor's certification that proposed substitution complies with requirements in the Contract Documents, except as indicated in substitution request, is compatible with related materials and is appropriate for applications indicated, , if requested by USAID.

m. Contractor's waiver of rights to additional payment or time that may subsequently become necessary because of failure of proposed substitution to produce indicated results, if requested by USAID.

1.5 QUALITY ASSURANCE

A. Compatibility of Substitutions: Investigate and document compatibility of proposed substitution with related products and materials. Engage a qualified testing agency to perform compatibility tests recommended by manufacturers.

1.6 PROCEDURES

A. Coordination: Revise or adjust affected work as necessary to integrate work of the approved substitutions.

1.7 SUBSTITUTIONS

A. Substitutions for Cause: Submit requests for substitution immediately on discovery of need for change, but not later than 14 days prior to time required for preparation and review of related submittals.

1. Conditions: CO will consider Contractor's request for substitution when the following conditions are satisfied. If the following conditions are not satisfied, CO will return requests without action, except to record noncompliance with these requirements:

a. Requested substitution is consistent with the Contract Documents and will produce indicated results.

b. Substitution request is fully documented and properly submitted. c. Requested substitution will not adversely affect Contractor's construction

schedule. d. Requested substitution has received necessary approvals of authorities having

jurisdiction.


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e. Requested substitution is compatible with other portions of the Work. f. Requested substitution has been coordinated with other portions of the Work. g. Requested substitution provides specified warranty. h. If requested substitution involves more than one contractor, requested

substitution has been coordinated with other portions of the Work, is uniform and consistent, is compatible with other products, and is acceptable to all contractors involved.

B. Substitutions for Convenience: Not allowed unless otherwise approved by USAID.

C. Substitutions for Convenience: CO will consider requests for substitution if received within 14 days after the Notice to Proceed. Requests received after that time may be considered or rejected at discretion of CO.

1. Conditions: CO will consider Contractor's request for substitution when the following conditions are satisfied. If the following conditions are not satisfied, CO will return requests without action, except to record noncompliance with these requirements:

a. Requested substitution offers Owner a substantial advantage in cost, time, energy conservation, or other considerations, after deducting additional responsibilities Owner must assume.

b. Requested substitution does not require extensive revisions to the Contract Documents.

c. Requested substitution is consistent with the Contract Documents and will produce indicated results.

d. Substitution request is fully documented and properly submitted. e. Requested substitution will not adversely affect Contractor's construction

schedule. f. Requested substitution has received necessary approvals of authorities having

jurisdiction. g. Requested substitution is compatible with other portions of the Work. h. Requested substitution has been coordinated with other portions of the Work. i. Requested substitution provides specified warranty. j. If requested substitution involves more than one contractor, requested

substitution has been coordinated with other portions of the Work, is uniform and consistent, is compatible with other products, and is acceptable to all contractors involved.





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SECTION 013100 – PROJECT MANAGEMENT & COORDINATION

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes administrative provisions for coordinating construction operations on Project including, but not limited to, the following:

1. Subcontract list.

2. Contractor’s organizational chart.

3. General coordination procedures.

4. Requests for Information (RFIs).

5. Project meetings.

B. Each contractor shall participate in coordination requirements. Certain areas of responsibility are assigned to a specific contractor.

1.3 DEFINITIONS

A. RFI: Request from Owner, Engineer, or Contractor seeking information required by or clarifications of the Contract Documents.

1.4 INFORMATION SUBMITTAL

A. Subcontractor List: Prepare a written summary identifying individuals or firms proposed for each portion of the Work, including those who are to furnish products or equipment fabricated to a special design and submit to the COR and Engineer fourteen days prior to start of Work. Include the following information in tabular form:

1. Name, address, and telephone number of entity performing subcontract or supplying products.

B. Contractor’s Organizational Chart: The Contractor shall maintain an updated Organizational Chart. The organizational chart shall include:

1. The names and positions of all personnel from the Key Personnel (or equivalent position) in charge of the Contract.


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1.5 GENERAL COORDINATION PROCEDURES

A. Coordination: Coordinate construction operations included in different Sections of the Project Documents and Specifications to ensure efficient and orderly installation of each part of the Work. Coordinate construction operations included in different sections of the Work that depend on other sections of the Work for proper installation, connection, and operation.

1. Schedule construction operations in sequence required to obtain the best results where installation of one part of the Work depends on installation of other components, before or after its own installation.

2. Coordinate installation of different components to ensure maximum performance and accessibility for required maintenance, service, and repair.

3. Make adequate provisions to accommodate items scheduled for later installation.

B. When requested by Engineer, prepare memoranda for distribution to each party involved, outlining special procedures required for coordination. Include such items as required notices, reports, and list of attendees at meetings.

1.6 REQUEST FOR INFORMATION (RFI)

A. General: Immediately upon discovery of the need for additional information or interpretation of the Contract Documents, the Contractor shall prepare and submit an RFI in the form specified.

B. Content of the RFI: Include a detailed, legible description of item needing information or interpretation and the following information, unless otherwise approved by the Engineer:

1. Project name. 2. Project number. 3. Date. 4. Name of Contractor. 5. Name of Engineer, and COR. 6. Email address of Contractor’s contact person 7. RFI number, numbered sequentially. 8. RFI subject. 9. Question: Fully describe question or information requested. Include:

a. Specification Section number and title and related paragraphs, as appropriate. b. Drawing number and detail references, as appropriate. c. Field dimensions and conditions, as appropriate. d. Contractor's suggested resolution. If Contractor's suggested resolution impacts

the Contract Time or the Contract Sum, Contractor shall state impact in the RFI.

10. Contractor's signature. 11. Attachments: Include sketches, descriptions, measurements, photos, Product Data,

Shop Drawings, coordination drawings, and other information necessary to fully describe items needing interpretation.

a. Include dimensions, thicknesses, structural grid references, and details of affected materials, assemblies, and attachments on attached sketches.


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C. RFI Forms: Use form approved by Engineer.

1. Attachments shall be electronic files in Adobe Acrobat PDF format.

D. Engineer Action: Engineer will review each RFI, determine action required, and respond. Allow reasonable time for Engineer's response for each RFI:

1. The following Contractor-generated RFIs will be returned without action:

a. Requests for approval of submittals. b. Requests for approval of substitutions. c. Requests for approval of Contractor's means and methods. d. Requests for coordination information already indicated in the Contract

Documents. e. Requests for adjustments in the Contract Terms and Conditions, Contract Time

or Contract Sum. f. Requests for interpretation of Engineer's actions on submittals. g. Incomplete RFIs or inaccurately prepared RFIs.

2. Engineer action may include a request for additional information, in which case Engineer time for response will date from time of receipt of additional information.

3. On receipt of Engineer action, The Contractor shall update the RFI log and immediately distribute the RFI response to affected parties. Review response and notify Engineer within seven days if Contractor disagrees with response.

a. a. Identification of related Minor Change in the Work, Construction Change Directive, and Proposal Request, as appropriate.

b. Identification of related Field Order, Work Change Directive, and Proposal Request, as appropriate.

E. RFI Log: The Contractor shall prepare, maintain, and submit a tabular log of RFIs organized by the RFI number. The Contractor shall submit a weekly log update to the COR and Engineer. At a minimum, the Log shall include the following:

1. Project name 2. Name and address of Contractor 3. Name and address of Engineer 4. RFI number including RFIs that were returned without action or withdrawn 5. RFI description 6. Date the RFI was submitted 7. Date Engineer response was received.

1.7 PROJECT CLOSEOUT CONFERENCE

A. Purpose: The Contractor shall schedule and conduct a project closeout conference, at a time convenient to the COR and Engineer, but no later than 30 days prior to the scheduled date of Substantial Completion. Attendees shall include: Authorized representatives of Owner, Engineer, the Contractor and its and its Key Personnel; major subcontractors; suppliers; and other concerned parties shall attend the meeting. Participants at the meeting shall be familiar with Project and authorized to conclude matters relating to the Work.

B. Conference Agenda: At a minimum, the meeting shall consist of the following:


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1. Preparation of record documents 2. Procedures required prior to inspection for Substantial Completion and for final

inspection for acceptance 3. Submittal of written warranties 4. Requirements for completing documentation 5. Requirements for preparing operations and maintenance data 6. Requirements for delivery of material samples, attic stock, and spare parts 7. Preparation of Contractor's punch list. 8. Responsibility for removing temporary facilities and controls

C. Minutes: The Contractor shall be responsible for preparing the meeting minutes to contain significant discussions and agreements achieved. The Contractor shall distribute the meeting minutes to the COR, Engineer and relevant participants for a seven day comment and approval period within three days of the meeting. The Contractor shall submit a final approved version of the minutes no later than fourteen days after the meeting occurrence.





013200-1

SECTION 013200 - CONSTRUCTION PROGRESS DOCUMENTATION

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes administrative and procedural requirements for documenting the progress of construction during performance of the Work, including the following:

1. Startup construction schedule. 2. Contractor's Construction Schedule. 3. Construction schedule updating reports. 4. Daily construction reports. 5. Material location reports. 6. Site condition reports. 7. Unusual event reports.

1.3 DEFINITIONS

A. Activity: A discrete part of a project that can be identified for planning, scheduling, monitoring, and controlling the construction Project. Activities included in a construction schedule consume time and resources.

1. Critical Activity: An activity on the critical path that must start and finish on the planned early start and finish times.

2. Predecessor Activity: An activity that precedes another activity in the network. 3. Successor Activity: An activity that follows another activity in the network.

B. Cost Loading: The allocation of the schedule of values for completing an activity as scheduled. The sum of costs for all activities must equal the total Contract Sum.

C. CPM: Critical path method, which is a method of planning and scheduling a construction project where activities are arranged based on activity relationships. Network calculations determine when activities can be performed and the critical path of Project.

D. Critical Path: The longest connected chain of interdependent activities through the network schedule that establishes the minimum overall Project duration and contains no float.

E. Event: The starting or ending point of an activity.

F. Float: The measure of leeway in starting and completing an activity. 1. Free float is the amount of time an activity can be delayed without adversely affecting

the early start of the successor activity. 2. Total float is the measure of leeway in starting or completing an activity without

adversely affecting the planned Project completion date.


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G. Resource Loading: The allocation of manpower and equipment necessary for completing an activity as scheduled.

1.4 INFORMATIONAL SUBMITTALS

A. Format for Submittals: Submit required submittals in the following format:

1. Working electronic copy of schedule file, where indicated. 2. PDF file.

B. Startup construction schedule.

1. Submittal of cost-loaded, startup construction schedule will not constitute approval of schedule of values for cost-loaded activities.

C. Contractor's Construction Schedule: Initial schedule, of size required to display entire schedule for entire construction period.

1. Submit a working digital copy of schedule, using software indicated, and labeled to comply with requirements for submittals.

D. Construction Schedule Updating Reports: Submit with Applications for Payment.

E. Daily Construction Reports: Submit at weekly intervals.

F. Site Condition Reports: Submit at time of discovery of differing conditions.

G. Unusual Event Reports: Submit at time of unusual event.


A. Pre-scheduling Conference: Conduct conference at Project site in the presence of representatives from the owner, engineer, and contractor. Review methods and procedures related to the preliminary construction schedule and Contractor's Construction Schedule, including, but not limited to, the following:

1. Review software limitations, content and format for reports. 2. Verify availability of qualified personnel needed to develop and update schedule. 3. Discuss constraints. 4. Review schedule for work of Owner's separate contracts. 5. Review submittal requirements and procedures. 6. Review time required for review of submittals and resubmittals. 7. Review requirements for tests and inspections by independent testing and inspecting

agencies. 8. Review time required for Project closeout and Owner startup procedures, including

commissioning activities. 9. Review and finalize list of construction activities to be included in schedule. 10. Review procedures for updating schedule.


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1.6 COORDINATION

A. Coordinate Contractor's Construction Schedule with the schedule of values, submittal schedule, progress reports, payment requests, and other required schedules and reports.

1. Secure time commitments for performing critical elements of the Work from entities involved.

2. Coordinate each construction activity in the network with other activities and schedule them in proper sequence.

1.7 CONTRACTOR'S CONSTRUCTION SCHEDULE, GENERAL

A. Time Frame: Extend schedule from date established for the Notice to Proceed to date of final completion.

1. Contract completion date shall not be changed by submission of a schedule that shows an early completion date, unless specifically authorized by Change Order.

B. Activities: Comply with the following:

1. Activity Duration: Define activities so no activity is longer than 20 days, unless specifically allowed by Engineer.

2. Procurement Activities: Include procurement process activities for the following long lead items and major items, requiring a cycle of more than 30 days, as separate activities in schedule. Procurement cycle activities include, but are not limited to, submittals, approvals, purchasing, fabrication, and delivery of.

a. Well Screen

b. Pump and Motor

c. Piping and Valves

3. Submittal Review Time: Include review and resubmittal times indicated in Section 013300 "Submittal Procedures" in schedule. Coordinate submittal review times in Contractor's Construction Schedule with submittal schedule.

4. Startup and Testing Time: Include no fewer than 15 days for startup and testing. 5. Commissioning Time: Include no fewer than 7 days for commissioning. 6. Substantial Completion: Indicate completion in advance of date established for

Substantial Completion, and allow time for Engineer's administrative procedures necessary for certification of Substantial Completion.

7. Punch List and Final Completion: Include not more than 30 days for completion of punch list items and final completion.

C. Upcoming Work Summary: Prepare summary report indicating activities scheduled to occur or commence prior to submittal of next schedule update. Summarize the following issues:

1. Unresolved issues. 2. Unanswered Requests for Information. 3. Rejected or unreturned submittals. 4. Notations on returned submittals. 5. Pending modifications affecting the Work and the Contract Time.


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D. Contractor's Construction Schedule Updating: At monthly intervals, update schedule to reflect actual construction progress and activities. Issue schedule one week before each regularly scheduled progress meeting.

1. Revise schedule immediately after each meeting or other activity where revisions have been recognized or made. Issue updated schedule concurrently with the report of each such meeting.

2. Include a report with updated schedule that indicates every change, including, but not limited to, changes in logic, durations, actual starts and finishes, and activity durations.

3. As the Work progresses, indicate final completion percentage for each activity.

E. Recovery Schedule: When periodic update indicates the Work is 14 or more calendar days behind the current approved schedule, submit a separate recovery schedule indicating means by which Contractor intends to regain compliance with the schedule. Indicate changes to working hours, working days, crew sizes, equipment required to achieve compliance, and date by which recovery will be accomplished.

F. Distribution: Distribute copies of approved schedule to Engineer, Owner, sub-contractors, testing and inspecting agencies, and other parties identified by Contractor with a need-to-know schedule responsibility.

1. Post copies in Project meeting rooms and temporary field offices. 2. When revisions are made, distribute updated schedules to the same parties and post in

the same locations. Delete parties from distribution when they have completed their assigned portion of the Work and are no longer involved in performance of construction activities.

1.8 STARTUP CONSTRUCTION SCHEDULE

A. Gantt-Chart Schedule: Submit startup, horizontal, Gantt-chart-type construction schedule within 21 days of date established for the Notice of Award.

B. Preparation: Indicate each significant construction activity separately. Identify first workday of each week with a continuous vertical line. Outline significant construction activities for first 30 days of construction. Include skeleton diagram for the remainder of the Work and a cash requirement prediction based on indicated activities.

1.9 GANTT-CHART SCHEDULE REQUIREMENTS

A. Gantt-Chart Schedule: Submit a comprehensive, fully developed, horizontal, Gantt-chart-type, Contractor's Construction Schedule within 21 days of date established for the Notice to Proceed.

1. Base schedule on the startup construction schedule and additional information received since the start of Project.

B. Preparation: Indicate each significant construction activity separately. Identify first workday of each week with a continuous vertical line.

1. For construction activities that require three months or longer to complete, indicate an estimated completion percentage in 10 percent increments within time bar.


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1.10 REPORTS

A. Daily Construction Reports: Prepare a daily construction report recording the following information concerning events at Project site:

1. List of subcontractors at Project site. 2. Count of personnel at Project site. 3. Equipment at Project site. 4. Material deliveries. 5. High and low temperatures and general weather conditions, including presence of

rain or hail. 6. Testing and inspection. 7. Accidents. 8. Meetings and significant decisions. 9. Unusual events. 10. Stoppages, delays, shortages, and losses. 11. Emergency procedures. 12. Orders and requests of authorities having jurisdiction. 13. Change Orders received and implemented. 14. Change Directives received and implemented. 15. Services connected and disconnected. 16. Equipment or system tests and startups. 17. Partial completions and occupancies. 18. Substantial Completions authorized.

B. Site Condition Reports: Immediately on discovery of a difference between site conditions and the Contract Documents, prepare and submit a detailed report. Submit with a Request for Information. Include a detailed description of the differing conditions, together with recommendations for changing the Contract Documents.

C. Unusual Event Reports: When an event of an unusual and significant nature occurs at Project site, whether or not related directly to the Work, prepare and submit a special report. List chain of events, persons participating, responses by Contractor's personnel, evaluation of results or effects, and similar pertinent information. Advise Owner in advance when these events are known or predictable.

1. Submit unusual event reports directly to Owner within one day(s) of an occurrence. Distribute copies of report to parties affected by the occurrence.





013300-1

SECTION 013300 - SUBMITTAL PROCEDURES

PART 1 - GENERAL



1.2 SUMMARY


1. Submittal schedule requirements. 2. Administrative and procedural requirements for submittals.


1. Section 013200 "Construction Progress Documentation" for submitting schedules and reports, including Contractor's construction schedule.

1.3 DEFINITIONS

A. Action Submittals: Written and graphic information and physical samples that require Engineer's responsive action. Action submittals are those submittals indicated in individual Specification Sections as "action submittals."

B. Informational Submittals: Written and graphic information and physical samples that do not require Engineer's responsive action. Submittals may be rejected for not complying with requirements. Informational submittals are those submittals indicated in individual Specification Sections as "informational submittals."

1.4 SUBMITTAL SCHEDULE

A. Submittal Schedule: Submit, as an action submittal, a list of submittals, arranged in chronological order by dates required by construction schedule. Include time required for review, ordering, manufacturing, fabrication, and delivery when establishing dates. Include additional time required for making corrections or revisions to submittals noted by Engineer and additional time for handling and reviewing submittals required by those corrections.

1. Coordinate submittal schedule with list of subcontracts, the schedule of values, and Contractor's construction schedule.

2. Initial Submittal: Submit concurrently with startup construction schedule. Include submittals required during the first 60 days of construction. List those submittals required to maintain orderly progress of the Work and those required early because of long lead time for manufacture or fabrication.

3. Final Submittal: Submit concurrently with the first complete submittal of Contractor's construction schedule.


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a. Submit revised submittal schedule to reflect changes in current status and timing for submittals.

4. Format: Arrange the following information in a tabular format:

a. Scheduled date for first submittal. b. Specification Section number and title. c. Submittal Category: Action; informational. d. Name of subcontractor. e. Description of the Work covered. f. Scheduled date for Engineer's final release or approval. g. Scheduled dates for purchasing. h. Scheduled date of fabrication. i. Scheduled dates for installation. j. Activity or event number.

1.5 SUBMITTAL FORMATS

A. Submittal Information: Include the following information in each submittal:

1. Project name. 2. Date. 3. Name of Engineer. 4. Name of Contractor. 5. Name of firm or entity that prepared submittal. 6. Names of subcontractor, manufacturer, and supplier. 7. Unique submittal number, including revision identifier. Include Specification Section

number with sequential alphanumeric identifier; and alphanumeric suffix for resubmittals.

8. Category and type of submittal. 9. Submittal purpose and description. 10. Number and title of Specification Section, with paragraph number and generic name

for each of multiple items. 11. Drawing number and detail references, as appropriate. 12. Indication of full or partial submittal. 13. Location(s) where product is to be installed, as appropriate. 14. Other necessary identification. 15. Remarks. 16. Signature of transmitter.

B. Options: Identify options requiring selection by Engineer.

C. Deviations and Additional Information: On each submittal, clearly indicate deviations from requirements in the Contract Documents, including minor variations and limitations; include relevant additional information and revisions, other than those requested by Engineer on previous submittals. Indicate by highlighting on each submittal or noting on attached separate sheet.

D. Paper Submittals:

1. Place a permanent label or title block on each submittal item for identification; include name of firm or entity that prepared submittal.

2. Provide a space approximately 150 by 200 mm on label or beside title block to record Contractor's review and approval markings and action taken by Engineer.


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3. Action Submittals: Submit three paper copies of each submittal unless otherwise indicated. Engineer will return two copies.

4. Informational Submittals: Submit two paper copies of each submittal unless otherwise indicated. Engineer will not return copies.

5. Additional Copies: Unless additional copies are required for final submittal, and unless Engineer observes noncompliance with provisions in the Contract Documents, initial submittal may serve as final submittal.

6. Transmittal for Submittals: Assemble each submittal individually and appropriately for transmittal and handling. Transmit each submittal using transmittal form.

E. PDF Submittals: Prepare submittals as PDF package, incorporating complete information into each PDF file. Name PDF file with submittal number.

1.6 SUBMITTAL PROCEDURES

A. Prepare and submit submittals required by individual Specification Sections. Types of submittals are indicated in individual Specification Sections.

1. Email: Prepare submittals as PDF package, and transmit to Engineer by sending via email. Include PDF transmittal form. Include information in email subject line as requested by Engineer.

a. Engineer will return annotated file. Annotate and retain one copy of file as a digital Project Record Document file.

2. Web-Based Project Software: Prepare submittals in PDF form, and upload to web-based Project software website. Enter required data in web-based software site to fully identify submittal.

3. Paper: Prepare submittals in paper form, and deliver to Engineer.

B. Coordination: Coordinate preparation and processing of submittals with performance of construction activities.

1. Coordinate each submittal with fabrication, purchasing, testing, delivery, other submittals, and related activities that require sequential activity.

2. Submit all submittal items required for each Specification Section concurrently unless partial submittals for portions of the Work are indicated on approved submittal schedule.

3. Submit action submittals and informational submittals required by the same Specification Section as separate packages under separate transmittals.

4. Coordinate transmittal of submittals for related parts of the Work specified in different Sections so processing will not be delayed because of need to review submittals concurrently for coordination.

a. Engineer reserve the right to withhold action on a submittal requiring coordination with other submittals until related submittals are received.

C. Processing Time: Allow time for submittal review, including time for resubmittals, as follows. Time for review shall commence on Engineer’s receipt of submittal. No extension of the Contract Time will be authorized because of failure to transmit submittals enough in advance of the Work to permit processing, including resubmittals.


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1. Initial Review: Allow 7 days for initial review of each submittal. Allow additional time if coordination with subsequent submittals is required. Engineer will advise Contractor when a submittal being processed must be delayed for coordination.

2. Intermediate Review: If intermediate submittal is necessary, process it in same manner as initial submittal.

3. Resubmittal Review: Allow 7 days for review of each resubmittal. 4. Sequential Review: Where sequential review of submittals by Owner or other parties

is indicated, allow 14 days for initial review of each submittal.

D. Resubmittals: Make resubmittals in same form and number of copies as initial submittal.

1. Note date and content of previous submittal. 2. Note date and content of revision in label or title block and clearly indicate extent of

revision. 3. Resubmit submittals until they are marked with approval notation from

Engineer's action stamp.

E. Distribution: Furnish copies of final submittals to manufacturers, subcontractors, suppliers, fabricators, installers, authorities having jurisdiction, and others as necessary for performance of construction activities. Show distribution on transmittal forms.

F. Use for Construction: Retain complete copies of submittals on Project site. Use only final action submittals that are marked with approval notation from Engineer's action stamp.

1.7 SUBMITTAL REQUIREMENTS

A. Product Data: Collect information into a single submittal for each element of construction and type of product or equipment.

1. If information must be specially prepared for submittal because standard published data are unsuitable for use, submit as Shop Drawings, not as Product Data.

2. Mark each copy of each submittal to show which products and options are applicable. 3. Include the following information, as applicable:

a. Manufacturer's catalog cuts. b. Manufacturer's product specifications. c. Standard color charts. d. Statement of compliance with specified referenced standards. e. Testing by recognized testing agency. f. Application of testing agency labels and seals. g. Notation of coordination requirements. h. Availability and delivery time information.

4. For equipment, include the following in addition to the above, as applicable:

a. Wiring diagrams that show factory-installed wiring. b. Printed performance curves. c. Operational range diagrams. d. Clearances required to other construction, if not indicated on accompanying

Shop Drawings.

5. Submit Product Data before Shop Drawings, and before or concurrent with Samples.


013300-5

B. Shop Drawings: Prepare Project-specific information, drawn accurately to scale. Shop drawings shall not be based on reproductions of the Contract Documents or standard printed data.

1. Preparation: Fully illustrate requirements in the Contract Documents. Include the following information, as applicable:

a. Identification of products. b. Schedules. c. Compliance with specified standards. d. Notation of coordination requirements. e. Notation of dimensions established by field measurement. f. Relationship and attachment to adjoining construction clearly indicated. g. Seal and signature of professional engineer if specified.

2. Paper Sheet Size: Except for templates, patterns, and similar full-size Drawings, submit Shop Drawings on sheets at least 215 by 280 mm, but no larger than 750 by 1067 mm.





015000-1

SECTION 015000 - TEMPORARY FACILITIES AND CONTROLS

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes requirements for temporary utilities, support facilities, and security and protection facilities.


1. Section 011000 "Summary" for work restrictions and limitations on utility interruptions.

1.3 USE CHARGES

A. General: Installation and removal of and use charges for temporary facilities shall be included in the Contract Sum unless otherwise indicated. Allow other entities engaged in the Project to use temporary services and facilities without cost, including, but not limited to, Engineer, testing agencies, and authorities having jurisdiction.

B. Water Service: Pay water-service use charges for water used by all entities for construction operations.

C. Electric Power Service: Pay electric-power-service use charges for electricity used by all entities for construction operations.

PART 2 - PRODUCTS

PART 3 - EXECUTION

3.1 TEMPORARY FACILITIES, GENERAL

A. Conservation: Coordinate construction and use of temporary facilities with consideration given to conservation of energy, water, and materials. Coordinate use of temporary utilities to minimize waste.

1. Salvage materials and equipment involved in performance of, but not actually incorporated into, the Work. See other Sections for disposition of salvaged materials that are designated as Owner's property.


015000-2

3.2 INSTALLATION, GENERAL

A. Locate facilities where they will serve Project adequately and result in minimum interference with performance of the Work. Relocate and modify facilities as required by progress of the Work.

B. Provide each facility ready for use when needed to avoid delay. Do not remove until facilities are no longer needed or are replaced by authorized use of completed permanent facilities.

3.3 TEMPORARY UTILITY INSTALLATION

A. General: Install temporary service or connect to existing service.

1. Arrange with utility company, Owner, and existing users for time when service can be interrupted, if necessary, to make connections for temporary services.

B. Water Service: Contractor to provide for temporary water service facilities to complete work. Clean and maintain water service facilities in a condition acceptable to Owner.

C. Sanitary Facilities: Provide temporary toilets, wash facilities, and drinking water for use of construction personnel. Comply with requirements of authorities having jurisdiction for type, number, location, operation, and maintenance of fixtures and facilities.

D. Electric Power Service: Provide electric power service and distribution system of sufficient size, capacity, and power characteristics required for construction operations.

3.4 SUPPORT FACILITIES INSTALLATION

A. Temporary Roads and Paved Areas: Construct and maintain temporary roads and paved areas adequate for construction operations. Locate temporary roads and paved areas within construction limits indicated on Drawings.

B. Temporary Use of Planned Permanent Roads and Paved Areas: Locate temporary roads and paved areas in same location as permanent roads and paved areas. Construct and maintain temporary roads and paved areas adequate for construction operations. Extend temporary roads and paved areas, within construction limits indicated, as necessary for construction operations.

1. Coordinate elevations of temporary roads and paved areas with permanent roads and paved areas.



016000-1

SECTION 016000 - PRODUCT REQUIREMENTS

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes administrative and procedural requirements for selection of products for use in Project; product delivery, storage, and handling; manufacturers' standard warranties on products; special warranties; and comparable products.

1.3 DEFINITIONS

A. Products: Items obtained for incorporating into the Work, whether purchased for Project or taken from previously purchased stock. The term "product" includes the terms "material," "equipment," "system," and terms of similar intent.

1. Named Products: Items identified by manufacturer's product name, including make or model number or other designation shown or listed in manufacturer's published product literature that is current as of date of the Contract Documents.

2. New Products: Items that have not previously been incorporated into another project or facility. Products salvaged or recycled from other projects are not considered new products.

3. Comparable Product: Product that is demonstrated and approved by Engineer through submittal process to have the indicated qualities related to type, function, dimension, in-service performance, physical properties, appearance, and other characteristics that equal or exceed those of specified product.

B. Basis-of-Design Product Specification: A specification in which a single manufacturer's product is named and accompanied by the words "basis-of-design product," including make or model number or other designation. In addition to the basis-of-design product description, product attributes and characteristics may be listed to establish the significant qualities related to type, function, in-service performance and physical properties, weight, dimension, durability, visual characteristics, and other special features and requirements for purposes of evaluating comparable products of additional manufacturers named in the specification.

C. Subject to Compliance with Requirements: Where the phrase "Subject to compliance with requirements" introduces a product selection procedure in an individual Specification Section, provide products qualified under the specified product procedure. In the event that a named product or product by a named manufacturer does not meet the other requirements of the specifications, select another named product or product from another named manufacturer that does meet the requirements of the specifications. Submit a comparable product request, if applicable.


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A. Compatibility of Options: If Contractor is given option of selecting between two or more products for use on Project, select product compatible with products previously selected, even if previously selected products were also options.

1. Each contractor is responsible for providing products and construction methods compatible with products and construction methods of other contractors.

2. If a dispute arises between contractors over concurrently selectable but incompatible products, Engineer will determine which products shall be used.

B. Identification of Products: Except for required labels and operating data, do not attach or imprint manufacturer or product names or trademarks on exposed surfaces of products or equipment that will be exposed to view in occupied spaces or on the exterior.

1. Labels: Locate required product labels and stamps on a concealed surface, or, where required for observation following installation, on a visually accessible surface that is not conspicuous.

2. Equipment Nameplates: Provide a permanent nameplate on each item of service-connected or power-operated equipment. Locate on a visually accessible but inconspicuous surface. Include information essential for operation, including the following:

a. Name of product and manufacturer. b. Model and serial number. c. Capacity. d. Speed. e. Ratings.

1.5 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Deliver, store, and handle products using means and methods that will prevent damage, deterioration, and loss, including theft and vandalism. Comply with manufacturer's written instructions.

B. Delivery and Handling:

1. Schedule delivery to minimize long-term storage at Project site and to prevent overcrowding of construction spaces.

2. Coordinate delivery with installation time to ensure minimum holding time for items that are flammable, hazardous, easily damaged, or sensitive to deterioration, theft, and other losses.

3. Deliver products to Project site in an undamaged condition in manufacturer's original sealed container or other packaging system, complete with labels and instructions for handling, storing, unpacking, protecting, and installing.

4. Inspect products on delivery to determine compliance with the Contract Documents and to determine that products are undamaged and properly protected.

C. Storage:

1. Store products to allow for inspection and measurement of quantity or counting of units.

2. Store materials in a manner that will not endanger Project structure.


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3. Store products that are subject to damage by the elements, under cover in a weathertight enclosure above ground, with ventilation adequate to prevent condensation.

4. Protect foam plastic from exposure to sunlight, except to extent necessary for period of installation and concealment.

5. Comply with product manufacturer's written instructions for temperature, humidity, ventilation, and weather-protection requirements for storage.

6. Protect stored products from damage and liquids from freezing. 7. Provide a secure location and enclosure at Project site for storage of materials and

equipment by Owner's construction forces. Coordinate location with Owner.

1.6 PRODUCT WARRANTIES

A. Warranties specified in other Sections shall be in addition to, and run concurrent with, other warranties required by the Contract Documents. Manufacturer's disclaimers and limitations on product warranties do not relieve Contractor of obligations under requirements of the Contract Documents.

1. Manufacturer's Warranty: Written warranty furnished by individual manufacturer for a particular product and specifically endorsed by manufacturer to Owner.

2. Special Warranty: Written warranty required by the Contract Documents to provide specific rights for Owner.

B. Special Warranties: Prepare a written document that contains appropriate terms and identification, ready for execution.

1. Manufacturer's Standard Form: Modified to include Project-specific information and properly executed.

2. Specified Form: When specified forms are included with the Specifications, prepare a written document using indicated form properly executed.

3. See other Sections for specific content requirements and particular requirements for submitting special warranties.





033000-1

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 1 - GENERAL


A. Drawings and general provisions of the Contract, including General and Supplementary Conditions, apply to this Section.

1.2 SUMMARY

A. Section includes cast-in-place concrete, including formwork, reinforcement, concrete materials, mixture design, placement procedures, and finishes.

1.3 DEFINITIONS

A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash, slag cement, other pozzolans, and silica fume; materials subject to compliance with requirements.

B. W/C Ratio: The ratio by weight of water to cementitious materials.


A. Product Data: For each type of product (including cementitious materials, admixtures, form materials, form releasing agents, steel reinforcement, etc).

B. Design Mixtures: For each concrete mixture/strength.

C. Steel Reinforcement Shop Drawings: Include bar sizes, lengths, material grade, and bar schedules.

D. Formwork Shop Drawings: Include dimensions of fiber voids, joints, supports, studding and shoring, and sequence of form and shoring removal.


A. Material Certificates: For each of the following, signed by manufacturers:

1. Cementitious materials. 2. Admixtures. 3. Form materials and form-release agents. 4. Steel reinforcement and accessories. 5. Other products.


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1.6 DELIVERY, STORAGE, AND HANDLING

A. Delivery, storage, and handling of cement, reinforcement steel, formwork materials, aggregates and water shall be in accordance with best practices and in line with national and international specifications such as EBCS, ASTM, or equivalent.

B. Formwork materials shall be delivered to site prior to concrete work. Formwork timber and panels shall be open stacked in an off the ground position. Timber for formwork shall be stored under shed. Timber and panel formwork for reuse shall be cleaned, oiled and stacked.

C. Reinforcement shall be delivered in sufficient quantities prior to start of concrete work, to ensure that no constructed formwork lies idle and exposed to weather due to reinforcement not being placed in position. Reinforcement and accessories shall be stored off the ground on platforms, skids, or other supports to prevent rust by contact with soil, dampness and other objectionable materials.

D. Cement shall be stored in bags or containers in an enclosed, ventilated space that protects it from deterioration. Cement shall always be stored off the ground. The off the ground formation method shall be subject to approval by the Engineer. Different types and consignments of cement shall be stored distinctly separated and with markings showing the type and date of consignment.

E. Aggregates shall be stockpiled on clear hard surfaces to prevent contamination by other materials and to avoid segregation. Different grades of aggregate shall be stocked independently, sufficient distance being maintained, to avoid mixing during unloading and use. Stockpiles shall be allowed to drain to ensure relatively uniform moisture content throughout the stockpile.

F. Water for concrete mixing and curing shall comply with the requirements of ASTM C94, EBCS 2, 1995, or equivalent. Water shall be piped or otherwise stored in an enclosed container free from contamination. If water in construction water tank develops an algae scum, the tank shall be emptied, scrubbed clean and thoroughly rinsed before being used to hold water for concrete mixing or curing.

G. Admixtures shall be stored in such a manner as to avoid contamination, evaporation or damage. Agitation equipment shall be used to ensure thorough distribution of the ingredients of non-stable or suspension solutions of admixtures. Liquid admixtures shall be protected from temperature changes that would adversely affect their characteristics.

H. Provide protection of materials and concrete from inclement weather and damage by work of other trades.


A. Jobsite Conditions:

1. Do not place concrete until conditions and facilities for the storage, handling and transportation of the concrete test specimens are in compliance with the requirements of ASTM C31 or equivalent. These conditions and facilities will be inspected and are subject to approval by the Engineer.

2. The accuracy of the fresh concrete mix proportions shall be checked by slump test periodically but not less than once per structural concrete placement of greater than 2.0 m3.


033000-3

3. Verify that the curing method complies with the approved method depending on the environment and any special requirements.

4. A log shall be kept of concrete batches mixed and placed. The log shall include a record of the time mixed, placed, weather, air temperature, concrete mix, location of placement, tests performed and samples taken and any other pertinent information as required by the Engineer.

B. Provide cube tests on structural concrete per the following:

1. Structural concrete test cubes shall be prepared by the same person for consistency from randomly selected batches of concrete. All cubes shall be made at the same time from the same batch of concrete about to be placed in the structure. A slump test shall be made from the same sample. Test cubes shall be made as and when directed by the Engineer, but not less than one set of 9 cubes shall be made for each incremental production of 100m3, or every 10 work days, whichever is greater. For example, two 9-cube sets are required for 120m3 produced over 5 workdays. Conversely, two 9-cube sets are required for 15m3 produced over 20 work days. In this case, a work day is considered to be six days per week during the structural concrete construction period of the project whether concrete is produced every day or not.

2. Three cubes of each set shall be tested at 7 days, 14 days and at 28 days all in accordance with ASTM C 39/C 39M, EBCS 2, 1995, or equivalent.

3. Cubes shall be clearly marked and dated as instructed. An accurate record of the location of the concrete for which the test is ordered shall be kept.

4. Addition cube set shall be produced when a material supplier or mix design change occurs.

C. Provide Structural Tests as deemed necessary:

1. If there is any doubt as to the strength of the structure solely or in part of the reasons that the site made concrete test cubes fail to attain the specified strength, additional tests must be done.

2. The structural safety shall be checked by appropriate calculations on the basis of actual test results which did not comply. If safety is assured, then concrete can be accepted.

3. If such structural safety or durability are not assured, then the strength of the concrete shall be examined by taking drilled cores or non-destructive methods (such as gamma radiography, ultrasonic test, rebound hammer test, or electromagnetic cover measuring devices). The results of such tests shall be assessed on the basis of the prescribed acceptance criterion, taking into account any differences in age.

4. If this new information shows that structural safety is assured, the concrete may be accepted after it has been decided whether repairs are necessary for durability.

5. If structural safety and durability are not assured, then the possibility of strengthening the structure must be investigated. If strengthening is not feasible, then the concrete shall be rejected, and the structure or member demolished or given a reduced structural grading by limiting its service rating, as appropriate.


033000-4

PART 2 - PRODUCTS

2.1 CONCRETE, GENERAL

A. Comply with EBCS, ASTM, or equivalent unless modified by requirements in the Contract Documents.

2.2 FORM-FACING MATERIALS

A. Comply with EBCS, ASTM, or equivalent unless modified by requirements in the Contract Documents.

2.3 STEEL REINFORCEMENT

A. Steel reinforcement – Provide steel reinforcement with a minimum yield strength of 300 MPa.

B. Comply with EBCS, ASTM, or equivalent unless modified by requirements in the Contract Documents.

2.4 CONCRETE MATERIALS

A. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from single source, and obtain admixtures from single source from single manufacturer.

B. Cementitious Materials: Provide Ordinary Portland Cement, Portland Pozzolana or approved equal as manufactured by an approved firm and confirms with ASTM, EBCS, or equivalent standards. Cement shall be used in the order delivered. It shall be visually checked and tested before being used. Set or partially set cement bags shall be immediately removed from the site. If required by the Engineer, manufacturers test certificate for each consignment of cement shall be issued with the consignment. Further tests for fineness and compressive strength for consignment already delivered shall be made when required by the Engineer.

C. Aggregate:

1. Fine Aggregate – Provide natural or crushed gravel or stone, clean sharp coarse grit, pit or river sand to conform to the requirements of ASTM C33 or equivalent.

2. Coarse Aggregate – Provide hard clean gravel or broken stones, durable, nonporous and free from harmful matter. It shall conform to the requirement of ASTM C33 or equivalent.

3. Fine and coarse aggregates shall be regarded as separate ingredients. Where more than one size of aggregate are combined with concrete mix, such proportion of combination shall conform to the appropriate grading as directed by the Engineer.

4. Aggregates shall not be screened on-site to modify their gradation. Rejected aggregates shall be removed from the site and replaced by approved material passed through the crusher plant.


033000-5

D. Water: Provided from an approved source and shall be clean, free from oil, acid, alkali, or any vegetable or organic matter harmful to any material with which it is used. Water shall conform to the requirements of ASTM C1602 or equivalent.

E. Admixtures:

1. Provided admixtures shall conform to the requirements of ASTM C260, ASTM C494, and/or equivalent.

2. Waterproof Concrete Admixture shall be Seka-1 Liquid Waterproofing Admixture for Mortar and Concrete, or equivalent.

2.5 CONCRETE ACCESSORIES

A. Waterstops – Shall be SIKA V-32E or equivalent.

B. Expansion Joint Materials:

1. Preformed Expansion Joint Filler

a. Non-extruded and resilient bituminous types ASTM D1751 or approved equal.

b. Preformed sponge rubber and cork types ASTM D1752 or approved equal.

c. Plain bituminous type ASTM D994 or approved equal.

d. Dimensions: 10 mm thick unless indicated otherwise: extending the full depth of the joint less 12mm where sealant is to be used.

C. Patching Materials

1. Bonding Grout – one part cement and one part fine sand mixed with water to the consistency of thick cream.

2. Portland-cement repair mortar – Prepared. Match color of concrete being patched.

2.6 CONCRETE MIXTURES

A. Provide concrete mix proportions as indicated on the drawings or specified herein. Concrete shall be capable of being placed without segregation. It shall when cured develop the strength and appearance as required by this specification.

B. The proportion of concrete ingredients given in this Specification or proportions obtained by tests shall be used for concrete mixing. The proportion of ingredients shall be such as to produce a mixture with high workability, which will work readily into the corners and angles of the forms and around reinforcement without segregation of the material components.

C. Allowance for the water content of the aggregates must be made. The concrete shall be mixed in an approved mechanical batch mixer. Mixing shall continue until there is a uniform distribution of the materials and the mass is uniform in color and consistency but in no case shall the mixing continue for less than two minutes after adding water. The volume of concrete in any batch shall not exceed the rated capacity of the mixer.


033000-6

D. Concrete shall be proportioned and produced to have the limits of slump as specified herein. The slump may not vary from the limits as given in the Specification unless approval for such variation is given by the Engineer.

E. Mixed concrete shall not be modified by the addition of extra water or cement or otherwise, in order to facilitate handling or for any other purpose. Additives to improve workability may be used only with prior approval. Admixtures shall be used as directed by the manufacturers.

F. The consistency of the concrete shall be controlled by direct measurement of the water content, making allowance for any water in the aggregate.

G. Normal Weight Concrete

1. Concrete shall be C25 according to EBCS 2, 1995 having minimum characteristic compressive strength of 25 MPa at the day deemed appropriate (28 days for concrete with Ordinary Portland Cement and 45 days for concrete with Portland Pozzolana cement).

2. Minimum Cementitious Materials Content: 360 kg/m3.

3. Maximum Water-Cementitious Ratio – 0.5

4. Concrete slump shall be 50mm-100mm for reinforced concrete.

5. Aggregate size: maximum to be 20mm.

H. Lean Concrete

1. Concrete shall be C5 according to EBCS 2, 1995 having minimum characteristic compressive strength of 5 MPa at the day deemed appropriate (28 days for concrete with Ordinary Portland Cement and 45 days for concrete with Portland Pozzolana cement).

2. Minimum Cementitious Materials Content: 160 kg/m3.

PART 3 - EXECUTION

3.1 FORMWORK INSTALLATION

A. Formwork shall be constructed so that it is capable of resisting all actions which may occur during the construction process. It shall remain undisturbed until the concrete has achieved sufficient strength to withstand the stresses to which it will be subjected on stripping or release, with an acceptable margin of safety.

B. Formwork shall be mortar tight, properly aligned and adequately supported to produce concrete surfaces meeting the surface requirements specified herein and conforming to construction tolerances given herein. Where forms for continuous surfaces are placed in successive units, the forms shall fit over the completed surface to obtain accurate alignment of the surface and to prevent leakage of mortar. Forms shall not be reused if there is any evidence of wear and tear or defects which would impair the quality of the surface. Surfaces of forms to be reused shall be cleaned of mortar from previous concreting and of


033000-7

all other foreign material before reuse. Form ties that are to be completely withdrawn shall be coated with a non-staining bond breaker.

C. Coating: The coating shall be used as recommended in the manufacturer’s printed or written instructions. Forms for finished surfaces may be wet with water in lieu of coating immediately before placing concrete, except that in cold weather with probable freezing temperatures, coating shall be mandatory. Surplus coating on form surfaces and coating on reinforcing steel and construction joints shall be removed before placing concrete.

D. Forms for openings, and construction which accommodate installation by other trades whose materials and products must be fabricated before the opportunity exists to verify the measurements of adjacent construction which affects such installations, shall be accurately sized and located as dimensioned on the drawings. In the event that deviation from the drawing dimensions results in problems in the field, the Contractor shall be responsible for resolution of the conditions as approved, without additional expense to USAID.

E. Removal of forms: Forms shall be removed slowly, preventing damage to the concrete and ensuring the complete safety of the structure. Appropriate form release agents shall be used if forms are temporary. Formwork for columns, walls, side of beams and other parts not supporting the weight of concrete may be removed when the concrete has attained sufficient strength to resist damage from the removal operation. Supporting forms and shores shall not be removed from beams, floors and walls until the structural units are strong enough to carry their own weight and any other construction or natural loads, but not before the concrete strength has reached 70 percent of design strength, as determined by field cured cubes or other approved methods.

3.2 REINFORCEMENT INSTALLATION

A. Reinforcement shall be fabricated to shapes and dimensions shown on the drawings and in accordance with appropriate international standards. Reinforcement shall be cold bent unless otherwise authorized. Bending may be accomplished in the field or at the mill. Bars shall not be bent after embedment in concrete. Safety caps shall be placed on all exposed ends of vertical concrete reinforcement bars that pose a danger to life safety. Wire tie ends shall face away from the forms.

B. Placement: Reinforcement shall be free from loose rust and scale, dirt, oil, or other deleterious coating that could reduce bond with the concrete. Concrete coverage shall be as indicated or as required by the standards. Reinforcement shall be placed in accordance with standards at locations shown plus or minus one bar diameter. Reinforcement shall not be continuous through expansion joints and shall be as indicated through construction or contraction joints. If bars are moved more than half the nominal spacing to avoid interference with other reinforcement, conduits, or embedded items, the resulting arrangement of bars, including additional bars required to meet structural requirements, shall be submitted for approval to the Engineer before concrete is placed.

C. Splicing: Splices of reinforcement shall conform to the standards and shall be made only as required or indicated. Splicing shall be by lapping unless otherwise indicated. Lapped bars shall be placed in contact and securely tied or spaced transversely apart to permit the embedment of the entire surface of each bar in concrete. Lapped bars shall not be spaced further apart than one-fifth the required length of lap or 150mm.

D. Where piping or block-out penetration (greater than 40mm in any dimension) of structural elements is necessary, the longitudinal reinforcement immediately adjacent to the penetration shall be increased by a minimum of 20% for a distance of 48 bar diameters


033000-8

either side of the penetration. Penetrations shall be made perpendicular to the long axis of the structural member and as near as practical to the mid-point of the member.

3.3 CONCRETE PLACEMENT

A. Inspection: Prior to placing concrete, verify that installation of formwork, reinforcement, and embedded items is complete and that required inspections have been performed.

B. Mixing

1. Mixing of concrete shall be performed in a mechanical mixer.

2. If quantity to be placed is less than 0.05 m3, such as for a small patch or grouting, mixing may be done by shovel with carefully measured components in a wheel barrow. In no event shall mixing occur on the ground, on a slab, or other unconfined means where foreign matter may be introduced.

3. The Contractor shall not allow water to be added from a hose at any time.

C. Transportation and Placement

1. Transporting:

a. Discharge concrete into the forms within not more than 1-1/2 hours after the cement has entered the mixing drums. Do not add re-tempering water at the jobsite, nor exceed the specified maximum water content.

2. Placing

a. Deposit concrete at or near its final position in the formwork in a manner that will preserve the desired properties of the water-cement ratio, slump, air entrainment and homogeneity. Place concrete in horizontal layers 450 mm to 600 mm thick completely across the forms, avoiding inclined layers and cold joints. On sloping surfaces, place concrete at the lower portion of the slope first.

b. Do not allow concrete to fall freely in the forms for a distance exceeding 1.5 m. Do not move concrete horizontally more than 1.0 m from point of discharge. Space points of deposit not more than 2.0 m apart.

c. Exercise care to avoid splashing the forms and reinforcing above the level of or the concrete as placed. Regulate the placing of concrete so that the pressure caused by wet concrete will not cause distortion, leakage or movement in the forms.

d. Concrete shall be cast continuously and when in layers, the fresh concrete shall be cast before the under layer has hardened. Construction joints as approved or directed by the Engineer or provided in the drawings shall be placed if concrete cannot be cast continuously.

e. All methods of placing concrete shall be subject to acceptance by the Engineer. The following methods of placement shall be inspected and accepted in writing prior to placement:


033000-9

i. Placed by manual methods: Transport concrete from the mixer to the forms as rapidly as practicable. Prevent segregation or loss of ingredients and assure no loss of mortar occurs. Clean transporting equipment thor-oughly between loads. Remove concrete which has segregated in trans-porting and dispose of as directed by the Engineer.

The concrete shall be deposited as closely as possible to its final position in the forms. It shall be worked into the corners and angles of the forms and around all reinforcement and embedded items in a manner to prevent segregation of aggregates or excessive laitance.

3. Consolidation

a. Unless otherwise directed, consolidate all concrete by the use of approved mechanical vibrators operated with the mass of the concrete.

b. Conduct vibration in systematic manner by competent, experienced workmen, with regularly maintained vibrators, and with sufficient back-up units at the job site. Use the largest and most powerful vibrator that can effectively be operated in the given work with a minimum frequency of 8000 vibrations per minute, and of sufficient amplitude to effectively consolidate the concrete.

c. Insert and withdraw the vibrator vertically at uniform spacing over the entire area of the placement. Space the distance between insertions such that “spheres of influence” of each insertion overlap.

d. When concrete is placed in horizontal lifts, insert the vibrator rapidly to the bottom of the layer and at least 150 mm into the underlying layer, hold it there stationary for several seconds, and then withdraw it slowly, at the rate of about 75mm per second. Conduct vibration so as to produce concrete that is of uniform texture and appearance, free from honeycombing, streaking, cold joints, or visible lift lines.

e. On vertical surfaces where an as-cast finish is required, use additional vibration as required to bring a full surface of mortar against the forms, so as to eliminate all objectionable air voids, bug holes, and other surface defects. Additional procedures include reducing the distance between internal vibration insertions and increase the time for each insertion. Insert the vibrator as close to the face of the form as possible without contacting the form. And, use spading as a supplemental vibration where particularly difficult conditions exist.

D. The mix shall be such that no excess water shall be on the top surface upon completion of compaction.

E. Bonding: The hardened concrete of construction joints and joints between concrete structures shall be dampened and thoroughly covered with a coat of cement grout in the same proportion as the concrete mix proportion to be used. The fresh concrete shall be cast before the grout has attained its initial set.

F. Construction, Expansion and Control Joints:

1. Install expansion joint devices in coordination with the required pattern placement sequence. Set top to required elevations. Secure to resist movement by wet concrete.


033000-10

2. Install joint device anchors. Maintain correct position to allow joint cover to be flush with floor and wall finish.

3. Install joint covers in longest practical length, when adjacent construction activity is complete.

4. Place concrete continuously between predetermined expansion, control, and construction joints.

5. Do not interrupt successive placement; do not permit cold joints to occur.

6. When placing new concrete next to a joint, the surface of the construction joint shall be thoroughly cleaned and laitance removed. Immediately before new concrete is placed, all construction joints shall be wetted and standing water removed.

G. Curing and Protection

1. General

a. Beginning immediately after placement, protect concrete from premature drying, and mechanical injury for at least 28 days from the date of casting.

b. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete. See below for acceptable options. The concrete surface shall be kept continuously wet for at least 7 days to maintain constant temperature. The watering of concrete shall continue until the concrete has achieved its designed strength.

2. Methods of Curing

a. Unformed Surfaces. Immediately after finishing operations have been completed and the water film has evaporated from the surface, or as soon as marring of concrete will not occur, cover and cure the entire surface of the newly placed concrete in accordance with one or a combination of the methods specified herein.

b. Formed Surfaces. For formed surfaces exposed to heating by the sun, minimize moisture loss by keeping the forms wet until they can be safely removed. Immediately following form removal keep the surface continuously wet by a water spray or water saturated fabric. The use of a liquid membrane curing compound may be substituted for water curing, providing limitations specified below for membrane curing are adhered to.

c. Water curing. Wherever feasible use water curing for unformed surfaces. Continuously water-cure all exposed concrete by ponding, immersion, spraying, sprinkling, or saturated materials such as burlap or cotton mats kept wet with soil soaking hose and maintained in intimate contact with the concrete surfaces at all times.

3.4 PATCHING

A. The Contractor shall notify the Engineer when forms shall be removed and make provision for the Engineer to inspect concrete surfaces immediately upon removal of forms.


033000-11

B. Excessive honeycomb or embedded debris in concrete is not acceptable. Notify Engineer upon discovery.

C. Patch imperfections as directed:

1. Repair of tie holes – plug tie holes with portland-cement patching mortar.

2. Repair of surface defects other than tie holes – prepare defect by chipping away loose concrete to a sound surface. Apply bonding grout to prepare surface. Then apply portland-cement patching mortar. Keep the patch damp for seven days.

3.5 DEFECTIVE CONCRETE

A. Defective Concrete: Concrete not conforming to required lines, details, dimensions, tolerances or specified requirements.

B. Repair or replacement of defective concrete will be determined by the Engineer.

C. Do not patch, fill, touch-up, repair, or replace exposed concrete except upon express direction of the Engineer for each individual area.



042000-1

SECTION 042000 – MASONRY

PART 1 - GENERAL



1.2 SUMMARY

A. Provide masonry units for foundation and walls (internal & external).

1. Hollow Concrete Block (HCB) walls 2. Stone masonry foundation

B. Provide all masonry materials, mortar, ties, anchors and metal reinforcing as indicated on drawings and specified herein.

C. Provide labor, equipment, tools and scaffolding for masonry work, as required for the satisfactory installation of the work.

1.3 SUBMITTALS

A. Submit for approval two (2) samples of HCB, ties, anchors, mortar and stone. Attach signed and sealed Catalogues and Certificates to the samples. Deliver the samples to the Engineer.


A. Stone and blocks shall be unloaded and handled in a manner to prevent soiling, chipping and other damages rendering the material unusable for the intended purpose.

B. Store masonry units on elevated platforms in a dry location. If units are not stored in an enclosed location, cover tops and sides of stacks with waterproof sheeting, securely tied. If units become wet, do not install until they are dry.


A. Comply with all applicable National and International Standards.

B. Provide materials that meet Part 2 of this specification. Use experienced installers. Deliver, handle, and store materials in accordance with instructions above. Provide material certificates signed and sealed by supplier and contractor verifying compliance with specifications.


042000-2

PART 2 - PRODUCTS

2.1 HOLLOW CONCRETE BLOCK

A. General

1. Blocks shall be produced under shed on a suitable smooth floor. Blocks shall not be produced directly on soil.

2. Block top and bottom surfaces shall be free of form oil and cement grout skim that seal the vertical hollow core and reduce mortar bonding.

3. Only machines of approved design shall be used for the manufacture of blocks.

B. Kinds and Shapes

1. Units shall be modular in size and shall include closer, jamb, header, lintel, and bond beam units and special shapes and sizes to complete the work as indicated.

2. Blocks shall be uniform in texture, shape, size, with sharp arises and free from any cracks or defects.

C. Concrete blocks shall be obtained from an approved supplier or may be manufactured on site. Samples and test results shall be submitted for approval by the Engineer before any blocks are delivered or used in the construction.

D. Surfaces of units which are to receive plaster or stucco finish shall be sufficiently rough to provide bond; elsewhere, exposed surfaces of units shall be smooth and of uniform texture. Provide solid units where indicated.

E. Compressive Strength of Blocks: The following are the minimum compressive strength requirements for blocks at the age of 28 days. The mix proportions of the material components are to be adjusted as required to obtain the required compressive strength.

F. Hollow Blocks Class Average of 6 Blocks Individual Block Class A 42kg/cm2 38kg/cm2 Class B 35kg/cm2 32kg/cm2 Class C 20kg/cm2 18kg/cm2

2.2 STONE

A. Stone obtained from quarries approved by the Engineer shall be hard and sound, free from vents, cracks, fissures, discoloration, or other defects that will adversely affect strength or appearance. Stone chips out of which shaped stone are to be produced shall not be less than 450 mm average and 380 mm individual length.

2.3 MORTAR

A. Cement-lime mortar; other types as required by application. Mortar shall meet the requirements of ASTM C270 or equivalent standard, Type S (Ultimate compressive strength of 130 kg/cm2. Proportions: 1 part cement, 0-1/2 part lime, and 4-1/2 parts aggregates).


042000-3

PART 3 - EXECUTION

3.1 LAYING MASONRY UNITS

A. General

1. Coordinate masonry work with the work of other trades to accommodate built-in items and to avoid cutting and patching.

2. Masonry units shall be laid in running bond pattern. Facing courses shall be level with back-up courses.

3. Each unit shall be adjusted to its final position while mortar is still soft and plastic. Units that have been disturbed after the mortar has stiffened shall be removed, cleaned, and re-laid with fresh mortar.

4. Air spaces, cavities, chases, expansion joints, and spaces to be grouted shall be kept free from mortar and other debris.

5. Units used in exposed masonry surfaces shall be selected from those having the least amount of chipped edges or other imperfections detracting from the appearance of the finished work.

6. Vertical joints shall be kept plumb. 7. Units being laid and surfaces to receive units shall be free of water, dust, film and

frost. Solid units shall be laid in a non-furrowed full bed of mortar. 8. Units shall be shoved into place so that the vertical joints are tight. Vertical face

shells of concrete masonry units, except where indicated at control, expansion, and isolation joints, shall be completely filled with mortar. Mortar will be permitted to protrude up to 13 mm into the space or cells to be grouted. Means shall be provided to prevent mortar from dropping into the space below.

B. Hollow Concrete Blocks

1. Units in piers, pilasters, columns, lintels, and beams, and where cells are to be filled with grout shall be full bedded in mortar under both face shells and webs. Other units shall be full bedded under both face shells.

2. Head joints shall be filled solidly with mortar for a distance in from the face of the unit not less than the thickness of the face shell.

3. Jamb units shall be of the shapes and sizes to conform to wall units. 4. Solid units may be incorporated in the masonry work where necessary to fill out at

corners, gable slopes, and elsewhere as approved. 5. Walls and partitions shall be adequately reinforced for support of wall-hung plumbing

fixtures when chair carriers are not specified.

C. Solid Units

1. Bed, head, and collar joints shall be completely filled with mortar.

D. Cutting and Fitting

1. Full units of the proper size shall be used wherever possible, in lieu of cut units. 2. Cut edges shall be clean, true and sharp. 3. Openings in the masonry shall be made carefully so that wall plates, cover plates or

escutcheons required by the installation will completely conceal the openings and will have bottoms parallel with the masonry bed joints.

4. Reinforced masonry lintels shall be provided above openings over 300 mm wide for pipes, ducts, cable trays, and other wall penetrations, unless steel sleeves are used.


042000-4

5. Units used in sloping parapet walls and eave walls shall be saw cut clean, true and sharp. Hand chipping or shaping shall not be allowed.

E. Joints

1. Joints not receiving plaster shall be struck with a concave tool to provide a smooth recessed curved surface.

2. Install only quality units. Defective units shall be rejected. The surface shall be free of chips, cracks, or other imperfections that would detract from the overall appearance of the finished wall.

3. Horizontal mortar for block walling shall have a maximum thickness of 15mm. Vertical joints shall have a maximum thickness of 20mm. Finished walls shall have consistent joint thickness. Over/under thickness joints being used to achieve desired wall dimensions.

F. Expansion Joints

1. Provide expansion joints no greater than 9 m on center at approved locations approved by the Engineer.

G. Embedded Items

1. Spaces around built-in items such as anchors, ties, wall plugs, accessories, flashing, pipe sleeves and other items required to be built-in shall be embedded as the masonry work progresses.

2. Openings around flush-mount electrical outlet boxes in wet locations shall be pointed with mortar.

3. Anchors, ties and joint reinforcement shall be fully embedded in the mortar. 4. Cells receiving anchor bolts and cells of the first course below bearing plates shall be

filled with grout. 5. Coordinate installation of flashings; prepare masonry surfaces smooth and bed

flashings in mortar. 6. Space ties not more than 600 mm on center vertically and horizontally.

H. Unfinished Work

1. Unfinished work shall be stepped back for joining with new work. Toothing may be resorted to only when specifically approved by the Engineer.

2. Loose mortar shall be removed and the exposed joints shall be thoroughly cleaned before laying new work.

I. Wall Intersection

1. Each course shall be masonry bonded at corners and elsewhere as shown. 2. Sections of non-reinforced masonry walls less than 1.5 meters long shall be anchored

or tied at 400 mm on center intervals to adjacent concrete columns or bond beams. Ties shall grouted and extend a minimum of 400 mm into the masonry wall.

J. Partitions

1. Partitions shall be continuous from floor to underside of floor or roof deck where shown.

2. An isolation joint shall be placed in the intersection between partitions and structural or exterior walls as shown.


042000-5

3. Partitions containing joint reinforcement shall be provided with prefabricated pieces at corners and intersections or partitions.

3.2 Joint reinforcement Installation

A. Joint reinforcement shall be installed at 400 mm on center or as indicated. Reinforcement shall be lapped not less than 150 mm. Prefabricated sections shall be installed at corners and wall intersections. The longitudinal wires of joint reinforcement shall be placed to provide not less than 16 mm cover to either face of the unit.

3.3 Lintels

A. Precast concrete and steel lintels shall be as shown on the drawings. Lintels shall be set in a full bed of mortar with faces plumb and true. Steel and precast lintels shall have a minimum bearing length of 200 mm unless otherwise indicated on the drawings.

3.4 Sills and Coping

A. Sills and copings shall be set in a full bed of mortar with faces plumb and true.

3.5 Pointing and Cleaning

A. After mortar joints have attained their initial set, but prior to hardening, mortar and grout daubs or splashings shall be completely removed from masonry-unit surfaces that will be exposed or painted.

B. Before completion of the work, defects in joints of masonry to be exposed or painted shall be raked out as necessary, filled with mortar, and tooled to match existing joints.

C. Immediately after grout work is completed, scum and stains which have percolated through the masonry work shall be removed using a high pressure stream of water and a stiff bristled brush. Masonry surfaces shall not be cleaned, other than removing excess surface mortar, until mortar in joints has hardened. Masonry surfaces shall be left clean, free of mortar daubs, dirt, stain, and discoloration, including scum from cleaning operations, and with tight mortar joints throughout. Metal tools and metal brushes shall not be used for cleaning.

D. Exposed concrete masonry unit surfaces shall be dry-brushed at the end of each day's work and after any required pointing, using stiff-fiber bristled brushes.



051200-1

SECTION 051200 – STRUCTURAL STEEL

PART 1 - GENERAL



1.2 SUMMARY

A. Provide structural steel system, including shop primer and connections, complete and ready for use. Provide labor, equipment, and tools necessary for fabrication, assembly and erection.

B. Structural steel systems including design, materials, installation, workmanship, fabrication, assembly, erection, inspection, quality control, and testing shall be provided in accordance with BS, EBCS, or equivalent standards except as modified in this contract.

1.3 SUBMITTALS

A. Submit the following for approval:

1. Shop Drawings: Erection drawings; Fabrication drawings, including description of connections.

2. Product Data: Mill Certification of Steel yield and tensile strength. The certificate shall indicate the grade of steel and details of the mechanical analysis and chemical composition.

3. Test results of grade and mechanical properties, if required.

4. Shop primer: Provide product data showing compliance with requirements listed below.


A. Protect steel, priming or other materials from damage during product transport, assembly and erection, and by work on other trade.

B. Materials shall be stored and handled in a manner preventing deformation and damage. Structural Steel shall be stored in an off the ground position so that members are free of earth and dampness. No foreign material shall accumulate on stored Structural Steel.

C. Nuts, bolts, electrodes and the like shall be stored in their original packing or locked container until use.


051200-2


A. Drawing Requirements: Submit fabrication drawings for approval prior to fabrication. Include complete information for the fabrication and erection of the structure's components, including the location, type, and size of bolts, welds, member sizes and lengths, connection details, blocks, copes, and cuts. Use AWS or equivalent standard welding symbols.

B. Certifications

1. Erection Plan: Submit for record purposes. Indicate the sequence of erection, and a detailed sequence of welding, including each welding procedure required.

2. Welding Procedures and Qualifications: Qualify welders in accordance with AWS D1.1/D1.1M or other equivalent standards. Use procedures, materials, and equipment of the type required for the work. Welders will be field tested by the Site Engineer.

C. Tests

1. Perform tests to verify the grade and mechanical properties of the structural steel and welding of fabricated steel if required by the Engineer. Test samples shall be randomly selected by the Engineer.

2. Perform tests as required by BS 4360, EN ISO 25817, or equivalent to the extent determined by the Engineer.

PART 2 - PRODUCTS

2.1 STEEL

A. Structural Steel

1. General purpose structural grade, per BS 4360 standards, Fe 360 per EBCS 3, or equivalent, with minimum yield strength of 235 MPa.

2. Structural steel material shall be sound and free from internal and external defects or surface flows that might impair the section from the intended use and appearance.

2.2 BOLTS, NUTS, AND WASHERS

A. Provide bolts and nuts that are hexagonal square or round bolts produced from mild steel. The bolts and nuts shall comply with the requirements of BS 4190 standards, or EN 1993-1-8, standards reference group 4, or EBCS 3, 1995, or equivalent.

2.3 STRUCTURAL STEEL ACCESSORIES

A. Welding Electrodes and Rods shall meet AWS D1.1-2002 or BS 639, or EN ISO 25817, or EN 1993-1-8, standards reference group 5, or equivalent standards.

2.4 SHOP PRIMER

A. Provide marine alkyd metal primer per BS or equivalent standards.


051200-3

2.5 FABRICATION

A. Shop Primer

1. Cleaning: Maintain steel surfaces free from rust, dirt, oil, grease, and other contaminants through final assembly.

2. Primer: Apply primer to a minimum dry film thickness of 0.05 mm. Repair damaged primed surfaces with an additional coat of primer.

PART 3 - EXECUTION

3.1 GENERAL

A. The fabrication, assembly and erection of structural steel shall generally comply with the requirements of BS 5950, Part 2 and EBCS 3, or equivalent. Welding electrodes and procedures shall be such that, the mechanical properties of the deposited weld metal is not less than the metal to be welded.

3.2 FABRICATION

A. Fabrication shall be in accordance with the applicable provisions of BS, EBCS, or equivalent standards. Fabrication shall carried out in strict conformity with the approved shop drawings.

B. Fabrication shall follow sequences, which will expedite assembly and erection.

C. Cutting shall be, by sawing, shearing, cropping or flame cutting.

D. Ends of tubular sections shall be sealed.

E. Fastenings of bearing splices of compression members shall be done after the abutting surfaces have been brought into full contact. Bearing surfaces and surfaces in permanent contact shall be cleaned prior to assembly of members.

F. Structural steel shall be shop primed immediately after fabrication where necessary. Surfaces shall be cleaned and left free from loose scale, loose rust, mill, oil, water etc. before priming.

3.3 ERECTION

A. Components shall be assembled within the tolerances allowed in BS 5950 Part 2 or equivalent standards.

B. Adequate care shall be taken to ensure that components are not bent, twisted or otherwise damaged.

C. The levels of concrete, masonry or other structure on which structural steel is to be erected shall be examined and set accurate and leveled before erection of steel structure. Anchors and embedded connections shall be accurately set and grouted before mounting of structure.


051200-4

D. Concrete grouted connections shall be firmly set in position, and fully cured to ensure that, no movement occurs beyond the allowed tolerance.

E. Structural steel work shall be securely connected to ensure that it can withstand all loading liable to be encountered during erection.

F. Permanent connections shall be made only after the structure has been satisfactorily aligned, leveled and plumbed.

G. Erections shall be executed within the tolerance limits of BS 5950 Part 2 or equivalent.

H. All deficiencies in structural steel work discovered before or after erection by observation, testing or otherwise shall be corrected at the contractor’s expense and as directed by the Engineer.

I. Protective and decorative treatment to be applied to steel structure shall be executed in accordance with this Specification.

J. Any damage to protective treatment shall be made good to the standard of the original treatment. Protective treatments shall be made good in accordance with the recommendation of the manufacturer and as approved by the Engineer.

3.4 CONNECTIONS

A. Except as modified in this section, connections not detailed shall be designed in accordance with BS, EBCS, EN, or equivalent standards. Do not tighten anchor bolts set in concrete with impact torque wrenches. Punch, sub-punch and ream, or drill bolt holes. Bolts, nuts, and washers shall be clean of dirt and rust, and lubricated immediately prior to installation.

B. Bolted connections shall be drawn together. Steel packing shall be provided to close gaps between adjacent surfaces.

C. Washers shall be provided where slot holes are oversized or directed by the Engineer.

D. Bolts shall be tightened to a "snug tight" fit. "Snug tight" is the tightness that exists when plies in a joint are in firm contact. If firm contact of joint plies cannot be obtained with a few impacts of an impact wrench, or the full effort of a man using a spud wrench, contact the Engineer for further instructions. Pre-stressed connections are not allowed for bolt grades less than 8.8 per EN 1993-1-8, EBCS 3, or equivalent standards.

3.5 WELDING

A. Welding shall be executed in accordance with BS 5135 or EN ISO 25817, or EN 1993-1-8, or equivalent standards reference group 5 using the best modern practices.

B. All connections to be welded shall be securely held in position and approved by the Engineer to ensure accurate alignment, camber and elevation before any welding is commenced.

C. All welding, except explicit exemptions approved by the Engineer, shall be constructed and tested in controlled shop environment prior to delivery to construction site.


051200-5

3.6 SHOP PRIMERS REPAIR

A. Repair shop primer in accordance with the paint manufacturer's recommendation for surfaces damaged by handling, transporting, cutting, welding, or bolting.

3.7 FIELD QUALITY CONTROL

A. Perform field tests, and provide labor, equipment, and incidentals required for testing. The Site Engineer shall notify the Contractor in writing of defective welds, bolts, nuts, and washers within 7 working days of the date of weld inspection.



220513-1

SECTION 220513 - COMMON MOTOR REQUIREMENTS FOR PUMPS

PART 1 - GENERAL



B. Refer to Section 332100 Water Supply Wells.

1.2 SUMMARY

A. Section includes general requirements for single or polyphase, general-purpose, horizontal, small and medium, squirrel-cage induction motors for use on AC power systems up to 600 V and installed at equipment manufacturer's factory or shipped separately by equipment manufacturer for field installation.

1.3 COORDINATION

A. Coordinate features of motors, installed units, and accessory devices to be compatible with the following:

1. Motor controllers. 2. Torque, speed, and horsepower requirements of the load. 3. Ratings and characteristics of supply circuit and required control sequence. 4. Ambient and environmental conditions of installation location.

PART 2 - PRODUCTS

2.1 GENERAL MOTOR REQUIREMENTS

A. Comply with NEMA MG 1 or equivalent.

2.2 MOTOR CHARACTERISTICS

A. Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 5900 feet to 11500 feet (1800 m to 3500 m) above sea level.

B. Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads at designated speeds, at installed altitude and environment, with indicated operating sequence, and without exceeding nameplate ratings or considering service factor.

2.3 POLYPHASE MOTORS

A. Description: NEMA MG 1, Design B, medium induction motor.


220513-2

B. Efficiency: Energy efficient, as defined in NEMA MG 1.

C. Service Factor: 1.15.

D. Multispeed Motors: Variable torque.

1. For motors with 2:1 speed ratio, consequent pole, single winding. 2. For motors with other than 2:1 speed ratio, separate winding for each speed.

E. Multispeed Motors: Separate winding for each speed.

F. Rotor: Random-wound, squirrel cage.

G. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.

H. Temperature Rise: Match insulation rating.

I. Insulation: Class F.

J. Code Letter Designation:

1. Motors 15 HP and Larger: NEMA starting Code F or Code G. 2. Motors Smaller than 15 HP: Manufacturer's standard starting characteristic.

K. Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor frame sizes smaller than 324T.

2.4 SINGLE-PHASE MOTORS

A. Motors larger than 1/20 hp shall be one of the following, to suit starting torque and requirements of specific motor application:

1. Permanent-split capacitor. 2. Split phase. 3. Capacitor start, inductor run. 4. Capacitor start, capacitor run.

B. Multispeed Motors: Variable-torque, permanent-split-capacitor type.

C. Bearings: Pre-lubricated, antifriction ball bearings or sleeve bearings suitable for radial and thrust loading.

D. Motors 1/20 HP and Smaller: Shaded-pole type.

E. Thermal Protection: Internal protection to automatically open power supply circuit to motor when winding temperature exceeds a safe value calibrated to temperature rating of motor insulation. Thermal-protection device shall automatically reset when motor temperature returns to normal range.

PART 3 - EXECUTION (Not Applicable)



221113-1

SECTION 221113 - FACILITY WATER DISTRIBUTION PIPING & STORAGE

PART 1 - GENERAL



1.2 SUMMARY

A. This Section includes water-distribution piping and related components outside the building for water service.

1.3 DEFINITIONS

A. DI: Ductile iron

B. GS: Galvanized steel

C. PE: Polyethylene plastic.

D. PVC: Polyvinyl chloride plastic.


A. Product Data: For each type of product. Include product data for pipes, fittings, valves, restraints, and tank.

B. Pipe hydraulic design calculation/sizing and pipe material(s) selection justification including the same for all proposed valves and fittings.

C. Product Samples: For each type of product.

D. Testing (pressure, leakage, others) plan and results.

E. Cleaning and disinfection plan.


A. Drawings: For piping and accessories including relation to other services in same area, drawn to scale. Show piping and accessories sizes and valves, and locations, and elevations.

B. Field quality check test reports.


221113-2

1.6 CLOSE OUT SUBMITTALS

A. Operation and Maintenance Data: For water valves and accessories to include in operation, and maintenance manuals.

1.7 QUALITY STANDARDS

A. Piping materials, electrical components, devices, and accessories shall have quality standards complying standard specifications such as ASTM, AWWA, or equivalent.


A. Delivery, storage, and handling of pipes, valves, and accessories shall comply with national and international standards.

1.9 PROJECT CONDITIONS

A. Interruption of Existing Water-Distribution Service: Do not interrupt service to facilities occupied by others unless permitted under the following conditions and then only after arranging to provide temporary water supply service according to requirements indicated:

1. Notify Engineer no fewer than two days in advance of proposed interruption of service.

2. Do not proceed with interruption of water supply service without Engineer's written permission.

PART 2 - PRODUCTS

2.1 PE PIPE AND FITTINGS

A. Comply with ASTM D2239, AWWA C906, or equivalent for PE Pipes. Comply with ASTM D2609, ASTM D3350, AWWA C906, or equivalent for PE Fittings.

B. Pressure ratings for PE Pipes and Fittings shall be in accordance with specific site requirements.

2.2 PVC PIPE AND FITTINGS

A. Comply with ASTM D1785, AWWA C900, or equivalent for PVC Pipes. Comply with ASTM D2464, ASTM D2467, AWWA C900, AWWA C907, AWWA C110, AWWA C111, AWWA C153, or equivalent for PVC Fittings.

B. Pressure ratings for PVC Pipes and Fittings shall be in accordance with specific site requirements.

2.3 GALVANIZED STEEL PIPE & FITTINGS

A. Comply with ASTM A53/A53M, or equivalent for GS Pipes. Comply with ASTM A182, AWWA C207, or equivalent for GS Fittings.


221113-3

B. Pressure ratings for GS Pipes and Fittings shall be in accordance with specific site requirements.

2.4 DUCTILE IRON PIPE & FITTINGS

A. Comply with ASTM 377, AWWA C115, or equivalent for DI Pipes. Comply with AWWA C110, AWWA C111, AWWA C153, or equivalent for DI Fittings.

B. Pressure ratings for DI Pipes and Fittings shall be in accordance with specific site requirements.

2.5 GATE VALVES

A. Comply with AWWA C509, AWWA C550, or equivalent for Gate Valves.

B. Pressure ratings for Gate Valves shall be in accordance with specific site requirements.

2.6 CHECK VALVES

A. Comply with AWWA C508, AWWA C550, or equivalent for Check Valves.

B. Pressure ratings for Check Valves shall be in accordance with specific site requirements.

2.7 FIBER GLASS WATER TANK

A. Sizing Requirement: Tank volume shall be as indicated in the drawing.

B. The tank shall be glass reinforced plastic designed to BS EN 13280 or equivalent, with thermally insulated panels. The tank shall be equipped with the tank manufacturer's standard type vent with a stainless steel insect screen. The tank shall be provided with drain valve, one 900mm manways with flanged, gasketed bolts and covers, and an overflow outlet. The connections required are one 25mm top discharging inlet pipe, one 25mm outlet pipe with faucet attached to it, one 25mm overflow pipes, and one 25mm low water discharge. Tank to be manufactured with UV protective materials to minimize deterioration.

C. Tank Testing: Fill tanks to water operating level to ensure structural integrity and freedom from leaks. Hold water level for two hours with no drop in water level. Repair or replace tanks that fail test with new tanks, and repeat until test is satisfactory.

D. Tie-downs: The tank will be securely fastened to the concrete platform using galvanized metal straps and hardware designed specifically for this purpose.

PART 3 - EXECUTION

3.1 EARTHWORK

A. Refer to Section 312000 and drawings for excavating, trenching, and backfilling.


221113-4

3.2 PIPING APPLICATIONS

A. General: Use pipe, fittings, and joining methods for piping systems according to the following applications.

B. Transition couplings and special fittings with pressure ratings at least equal to piping pressure rating may be used, unless otherwise indicated.

C. Flanges, unions, grooved-end-pipe couplings, and special fittings may be used, instead of joints indicated, on above ground piping.

D. Underground water-service piping NPS 3/4 to NPS 3 (DN 20 to DN 80) shall be any of the following:

1. PE, ASTM or equivalent pipe; insert fittings for PE pipe; and clamped joints. 2. PVC, Schedule 80 pipe; PVC, Schedule 80 socket fittings; and solvent-cemented

joints. 3. GS pipe, threaded ends; GS fittings, threaded 4. DI pipe, threaded ends; DI fittings, threaded

E. Underground water-service piping NPS 4 to NPS 8 (DN 100 to DN 200) shall be the following:

1. Ductile-iron, push-on-joint pipe; ductile-iron, push-on-joint fittings; and gasketed joints.

2. Galvanized steel, push-on-pipe; galvanized steel, push-on-joint fittings; and gasket joints.

3. PE, AWWA or equivalent pipe; PE, AWWA or equivalent fittings; and heat-fusion joints.

4. PVC, Schedule 80 pipe; PVC, Schedule 80 socket fittings; and solvent-cemented joints.

3.3 VALVE APPLICATIONS

A. General Application: Use mechanical-joint-end valves for NPS 3 (DN 80) and larger underground installation. Use threaded- or flanged-end valves for installation in chambers.

3.4 PIPING INSTALLATION

A. Install ductile-iron, water-service piping according to AWWA C600 and AWWA M41 or equivalent.

B. Install PE pipe according to ASTM D 2774 and ASTM F 645 or equivalent.

C. Install PVC, AWWA pipe according to ASTM F 645 and AWWA M23 or equivalent.

D. Extend water-service piping and connect to water-supply source and elevated water tank-piping systems at locations indicated.

E. Install underground piping with restrained joints at horizontal and vertical changes in direction. Use restrained-joint piping, thrust blocks, anchors, tie-rods and clamps, and other supports.


221113-5

F. Install anchorages for tees, bends, crosses, and valves.

G. Apply full coat of asphalt or other acceptable corrosion-resistant material to surfaces of installed ferrous anchorage devices.

3.5 VALVE INSTALLATION

A. Gate Valves: Comply with AWWA C600 and AWWA M44 or equivalent. Install valves with levers/handles pointing up and within valve chambers.

B. Valves Other than Gate Valves: Comply with AWWA C600 and AWWA M44 or equivalent.

3.6 CONNECTIONS

A. Connect water-transmission piping to inlet piping to elevated storage tank (by others) at Health Center sites.

3.7 FIBER GLASS TANK INSTALLATION

A. Tank installation should be in accordance with the manufacturer’s requirement.

3.8 FIELD QUALITY TESTS

A. Piping Tests: Conduct pipe tests before joints are covered and after concrete thrust blocks have hardened sufficiently. Fill pipeline 24 hours before testing and apply test pressure to stabilize system. Use only potable water.

B. Hydrostatic Tests: Test at not less than one-and-one-half times working pressure for two hours.

C. Leakage Tests: Leakage rate shall not exceed those indicated in AWWA C600 or equivalent.

D. Prepare reports of testing activities.

3.9 CLEANING

A. Clean and disinfect water-distribution piping as follows:

1. Use procedure described in AWWA C651 or equivalent or do as follows:

a. Fill system or part of system with water/chlorine solution containing at least 50 ppm of chlorine; isolate and allow to stand for 24 hours.

b. Drain system or part of system of previous solution and refill with water/chlorine solution containing at least 200 ppm of chlorine; isolate and allow to stand for 3 hours.

c. After standing time, flush system with clean, potable water until no chlorine remains in water coming from system.

d. Submit water samples in sterile bottles to laboratories. Repeat procedure if biological examination shows evidence of contamination.


221113-6

B. Prepare reports of disinfecting activities.



260500-1

SECTION 260500 – ELECTRICAL SYSTEMS

PART 1 - GENERAL



1.2 SUMMARY


1. Building wires and cables rated 600V and less. 2. Grounding and bonding systems and equipment. 3. Direct-buried conduit, ducts, and duct accessories 4. Distribution panelboards and lighting and appliance branch-circuit panel boards


A. Product Data: For each type of product.

B. Equipment and conductor sizing calculations.

C. Manufacturer’s installation instructions.

D. Shop drawings.


A. Field quality check reports.

B. Test reports.

1.5 CLOSE OUT SUBMITTALS

A. Operation and maintenance data

B. As-built drawing

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES

A. Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658 or equivalent


260500-2

B. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 or equivalent for Type THW-2, Type THHN-2-THWN-2, and Type XHHW-2.

2.2 GROUNDING AND BONDING

A. Insulated Conductors: Copper or tinned-copper wire or cable insulated for 600 V unless otherwise required by applicable Code or authorities having jurisdiction.

B. GROUNDING ELECTRODES

Ground Rods: Copper-clad steel; 3/4 inch by 10 feet (19 mm by 3 m).

2.3 DUCTS AND RACEWAYS

A. CONDUIT

RNC: NEMA TC 2, Type EPC-40-PVC, UL 651, with matching fittings by same manufacturer as the conduit, complying with NEMA TC 3, UL 514B or equivalent

2.4 PANEL BOARDS

A. Enclosures: Surface-mounted cabinets, as noted on drawings.

Rated for environmental conditions at installed location.

B. Phase, Neutral, and Ground Buses: Hard-drawn copper, 98 percent conductivity.

C. Panelboard Short-Circuit Current Rating: Fully rated to interrupt symmetrical short-circuit current available at terminals

D. Molded-Case Circuit Breaker (MCCB): Comply with UL 489 or equivalent, with interrupting capacity to meet available fault currents.

1. Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads, and instantaneous magnetic trip element for short circuits.

2. Electronic trip circuit breakers with rms sensing; field-replaceable rating plug or field-replicable electronic trip;

3. GFCI Circuit Breakers: Single- and two-pole configurations with Class A ground-fault protection (6-mA trip).

2.5 PUMP CONTROL SYSTEM

A. Contractor shall provide UL listed or equivalent pump control panel compatible with submersible pump and PV supply

B. The same manufacturer supplying the submersible pump shall provide control panel to insure compatibility

C. The contractor shall provide control panel compatible with long running water level sensor and control two tankers as per priority indicated in drawing for sites indicated in drawing.


260500-3

D. Control panel: Steel enclosure, logic to control water level within elevated tanks. Control voltage transformer, power on light, relays, switches, contactors etc

E. Provide level probes as follows:

1. Fill/Pump On: When level drops to 20% tank capacity, signal to be sent to operate

Submersible pump 2. Pump Off: When level capacity reaches 95% tank capacity, submersible pump to be

turned off.

PART 3 - EXECUTION

3.1 LOW VOLTAGE POWER CONDUCTOR

A. IDENTIFICATION

1. Color-Coding for Phase Identification, 600 V or Less: Use colors listed below for ungrounded service feeder and branch-circuit conductors.

a. Color-code system as follows, or to match local system requirements:

(a) Phase 1: Brown. (b) Phase 2: Black. (c) Phase 3: Grey. (d) Neutral: Blue. (e) Ground: Green and yellow

2. Underground-Line Warning Tape: During backfilling of trenches install continuous underground-line warning tape directly above line at 6 to 8 inches (150 to 200 mm) below finished grade. Use multiple tapes where width of multiple lines installed in a common trench exceeds 16 inches (400 mm) overall.

3.2 GROUNDING

A. Conductors: Install solid conductor for No. 10 AWG and smaller, and stranded conductors for No. 8 AWG and larger unless otherwise indicated.

B. Underground Grounding Conductors: Install bare copper conductor, as noted on drawings.

1. Bury at least 24 inches (600 mm) below grade.

C. Conductor Terminations and Connections:

1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors. 2. Connections to Ground Rods at Test Wells: Bolted connectors.

D. Connections to Structural Steel: Welded connectors.

E. Grounding Connections to Manhole Components: Bond exposed-metal parts such as inserts, cable racks, pulling irons, ladders, and cable shields within each manhole or hand hole, to ground rod or grounding conductor. Make connections with No. 4 AWG minimum, stranded, hard-drawn copper bonding conductor


260500-4

F. Ground Rods: Drive rods until tops are 2 inches (50 mm) below finished floor or final grade unless otherwise indicated.

3.3 UNDERGROUND DUCT APPLICATION AND INSTALLATION

A. Ducts for Electrical Feeders 600 V and Less: RNC, NEMA Type EPC-40-PVC or equivalent

B. Ducts for Electrical Branch Circuits: RNC, NEMA Type EPC-40-PVC or equivalent

3.4 PANEL BOARDS

A. Install overcurrent protective devices and controllers not already factory installed.

1. Set field-adjustable, circuit-breaker trip ranges.

3.5 FIELD QUALITY TESTS & INSPECTIONS

A. Perform tests and inspections: Test insulation resistance for each panelboard bus, component, connecting supply, feeder, and control circuit. And test continuity of each circuit.

B. Test and Inspection Reports: Prepare a written report to record the following: END OF SECTION 260500


312000-1

SECTION 312000 - EARTH MOVING

PART 1 - GENERAL



1.2 SUMMARY


1. Preparing subgrades for slabs-on-grade or apron-on-grade. 2. Excavating and backfilling trenches for utilities and pits for buried utility structures.

1.3 DEFINITIONS

A. Soil: Material yielding to ordinary excavation machinery or pick axes.

B. Backfill: Soil material or controlled low-strength material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

C. Bedding Course: Aggregate layer placed over the excavated subgrade in a trench before laying pipe.

D. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill.

E. Rock: Weathered or hard materials which can be excavated using earth moving machines or requiring wedges, prismatic tools, or blasting.

F. Utilities: On-site underground pipes, conduits, ducts, and cables.

1.4 SUBMITTALS

A. Pre-excavation Photographs or Videotape: Show existing conditions of adjoining construction and site improvements, including finish surfaces that might be misconstrued as damage caused by earth-moving operations. Submit before earth moving begins.

B. Contractor shall submit proposed source of borrow material, proof of soil classification (gradation and Atterberg’s limits), and soil samples for approval.

C. Name and address of testing service.

D. Test reports on excavating, filling and grading:

1. Test reports on borrow materials and stone.


312000-2

2. Field density test reports. 3. One optimum moisture-maximum density curve for each type of soil encountered.

1.5 FIELD CONDITIONS

A. Improvements on Adjoining Property: Authority for performing earth moving indicated on property adjoining Owner's property will be obtained by Owner before award of Contract.

1. Do not proceed with work on adjoining property until directed by Engineer.

B. Do not commence earth-moving operations until temporary site fencing and erosion- and sedimentation-control measures are in place.

C. The following practices are prohibited within protection zones:

1. Storage of construction materials, debris, or excavated material. 2. Foot traffic. 3. Excavation or other digging unless otherwise indicated.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations.

B. Satisfactory Soils: Satisfactory materials shall comprise any materials classified by ASTM or EBCS or equivalent standards.

C. Unsatisfactory Soils:

1. Materials which do not comply with the requirements for satisfactory materials are unsatisfactory. Specifically, “black cotton soil” or expansive clays are considered unsatisfactory materials.

2. Unsatisfactory materials also include man-made fills; trash; refuse; backfills from previous construction; and material classified as satisfactory which contains root and other organic matter.

D. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940/D 2940M or equivalent; except with 100 percent passing a 25-mm sieve and not more than 8 percent passing a No. 200 (0.075-mm) sieve.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth-moving operations.


312000-3

B. Protect and maintain erosion and sedimentation controls during earth-moving operations.

3.2 EXCAVATION FOR STRUCTURES

A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 25 mm. If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections.

1. Excavations for Foundations: Do not disturb bottom of excavation. Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work.

B. Excavation shall conform to the dimensions and elevations indicated for each structure except as specified. Excavation shall extend a sufficient distance from walls and footings to allow for placing and removal of forms. The distance shall be assumed to be 0.5 meters for each 1.5 meters of depth. Should additional excavation be required to satisfy safety requirements, such excavation will be reviewed and authorize by the Engineer in order to be eligible for payment. Excavations below indicated depths will not be permitted except to remove unsatisfactory material. Unsatisfactory material encountered below the grades shown shall be removed as directed. Satisfactory material removed below the depths indicated, without specific direction of the Engineer, shall be replaced, at no additional cost to USAID, with satisfactory materials to the indicated excavation grade.

3.3 EXCAVATION FOR UTILITY TRENCHES

A. Excavate trenches to indicated gradients, lines, depths, and elevations.

B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 800 mm higher than top of pipe or conduit unless otherwise indicated.

1. Clearance: 300 mm each side of pipe or conduit.

C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade.

1. For pipes and conduit less than 150 mm in nominal diameter, hand-excavate trench bottoms and support pipe and conduit on an undisturbed subgrade.

2. For pipes and conduit 150 mm or larger in nominal diameter, shape bottom of trench to support bottom 90 degrees of pipe or conduit circumference. Fill depressions with tamped sand backfill.

3. Excavate trenches 150 mm deeper than elevation required in rock or other unyielding bearing material to allow for bedding course.

D. Trench Bottoms: Excavate trenches 100 mm deeper than bottom of pipe and conduit elevations to allow for bedding course. Hand-excavate deeper at pipe fittings locations.

1. Excavate trenches 150 mm deeper than elevation required in rock or other unyielding bearing material to allow for bedding course.


312000-4

3.4 SHORING

A. Shoring, including sheet piling, shall be furnished and installed as necessary to protect workmen, banks, adjacent paving, structures, and utilities. Shoring, bracing, and sheeting shall be removed as excavations are backfilled, in a manner to prevent caving.

3.5 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust.

1. Stockpile soil materials away from edge of excavations.

3.6 STRUCTURAL BACKFILL

A. Selected materials shall be used in bringing fills and backfills to the lines and grades indicated and for replacing unsatisfactory materials. Satisfactory materials shall be placed in horizontal layers not exceeding 200 mm in loose thickness, or 150 mm when hand-operated compactors are used. After placing, each layer shall be plowed, disked, or otherwise broken up, moistened or aerated as necessary, thoroughly mixed and compacted as specified. Backfilling shall not begin until construction below finish grade has been approved, underground utilities systems have been inspected, tested and approved, forms removed, and the excavation cleaned of trash and debris. Backfill shall be brought to indicate finish grade. Backfill shall not be placed in wet or muddy areas. Heavy equipment for spreading and compacting backfill shall not be operated closer to foundation than a distance equal to the height of backfill above the top of footing; the area remaining shall be compacted in layers not more than 100 mm in compacted thickness with power-driven hand tampers suitable for the material being compacted.

3.7 UTILITY TRENCH BACKFILL

A. Place backfill on subgrades free of mud.

B. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for joints and barrels of pipes and for joints, fittings, and bodies of conduits.

C. Backfill voids with satisfactory soil while removing shoring and bracing.

D. Initial Backfill:

1. Soil Backfill: Place and compact initial backfill of satisfactory soil, free of particles larger than 25 mm in any dimension, to a height of 300 mm over the pipe or conduit.

a. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of piping or conduit to avoid damage or displacement of piping or conduit. Coordinate backfilling with utilities testing.

2. Controlled Low-Strength Material: Place initial backfill of controlled low-strength material to a height of 300 mm over the pipe or conduit. Coordinate backfilling with utilities testing.


312000-5

E. Final Backfill:

1. Soil Backfill: Place and compact final backfill of satisfactory soil to final subgrade elevation.

2. Controlled Low-Strength Material: Place final backfill of controlled low-strength material to final subgrade elevation.

F. Warning Tape: Install warning tape directly above utilities, 300 mm below finished grade, except 150 mm below subgrade under pavements and slabs. Tape shall be color coded as designated below

1. Red: Electric/Communication 2. Blue: Water Systems

3.8 TESTING

A. Testing shall be the responsibility of the Contractor and shall be performed at no additional cost to USAID. Field in-place density shall be determined in accordance with standard tests methods of testing soil in place by Sand-Cone method, Rubber Balloon Method, or by Nuclear Method (Shallow depth) as according to ASTM, DIN, BS, EN, or equivalent standards. When standard test methods for density of soil and soil aggregate in place are used, the calibration curves shall be checked and adjusted if necessary by the procedure described in the ASTM, DIN, BS, EN, EBCS, or equivalent standards. Results in a wet unit weight of soil shall be used to determine the moisture content of the soil. The calibration curves furnished with the moisture gauges shall also be checked along with density calibration checks as described in ASTM, DIN, BS, EN, EBCS, or equivalent standards. The calibration checks of both the density and moisture gauges shall be made at the beginning of a job on each different type of material encountered and at intervals as directed by the Engineer. Standard test method for density of soil in place by Drive-Cylinder Method shall be used only for soft, fine-grained, cohesive soils. The following number of tests, if performed at the appropriate time, shall be the minimum acceptable for each type operation.

B. Optimum Moisture and Laboratory Maximum Density: Tests shall be made for each type material or source of material, including borrow material to determine the optimum moisture and laboratory maximum density values. Testing frequency to be determined by Site Engineer for fill and backfill, or when any change in material occurs which may affect the optimum moisture content or laboratory maximum density will be made.

3.9 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove surplus soil and waste materials, including unsatisfactory soil, trash, and debris, and legally dispose of them off Owner's property.

3.10 SOIL CLASSIFICATION

A. All mass and trench excavation shall be “unclassified”. No additional payment will be made for excavation of hard materials such as rock or, for undercut of otherwise unsuitable material.



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SECTION 332100 – WATER SUPPLY WELLS

PART 1 - GENERAL



1.2 SUMMARY


1. Well casings. 2. Grout. 3. Water well screens. 4. Pack materials. 5. Submersible well pumps.

B. Borehole design and construction

1. Though the final design of each borehole will be determined based on site specific design information on the formation, for the purpose of this contract a typical multiple casing boreholes in unstable formations above and in aquifer zones are considered. Drilling will be carried out at the location agreed with USAID’s representative. Boreholes should not be located within 30m radius of the health centers septic tank, soak-away pit, sand mound, placenta pit, pit latrine, fuel storage, and similar facilities in the neighboring compounds. Drilling will commence at larger diameter and surface casing is installed through the overburden and sealed by pressure grouting. Drilling will continue at a reduced diameter through the unstable zone. An inner casing will be installed through the unstable zone. Further reduction in drilled hole and casing will continue as required to case off several unstable zones above the aquifer. Finally, a uniform diameter PVC/steel casing and screen assemblies will be lowered into the borehole and all larger diameter casings are recovered, apart from the grouted surface casing. The annular space between the completion casing and the borehole wall is then backfilled (gravel packed) and grouted at the surface.

C. Sampling

1. During the process of drilling, rock/soil samples shall be collected every 2 meters and as the lithology changes, for further analysis, identification of the water-bearing zone and to make decisions regarding the setup of the blind and screen casings. The samples shall be stored in a graduated sample box designed for such purpose. The drilling report shall include detailed records of lithology, drilling rate and borehole construction.

D. Drilling method

1. DTH is the preferred method of drilling, however, the Contractor may use any rotary or mud drilling technique that he feels applicable to achieve the depth and diameter


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required, provided that the techniques used are those specified in his proposal or are approved by USAID. The use of lost circulation agents or any form of plugging materials that may ultimately affect the production capacity of the water bearing strata will not be permitted. Any drilling fluids additives must be approved by USAID.

E. Drilling diameter and depth

1. Drilling diameter shall be proposed by the Contractor and approved by USAID based on field conditions.

2. Proposed drilling depths of the boreholes are indicated in the contract document (Refer to Drawing No. C-501).

F. Water supply and auxiliary services for drilling

1. The Contractor shall make his own arrangements for obtaining, storing, transporting and pumping of water required for the drilling purposes and for use by the drilling crew at their campsite. The Contractor shall provide light and all necessary equipment and auxiliaries for drilling or any other of the operation to avoid unnecessary delays and work stoppages.

G. Environmental protection of site

1. Care must be taken in handling and storage of all drilling fuels, oils, greases and fluids on site, to avoid any environmental degradation. The Contractor shall dispose of any toxic materials, drilling fluids, and other additives, cuttings and discharged water in a manner approved by USAID so as not to create damage to public and private property, and shall adhere to the set of “Environmental Guidelines for Drilling and Test Pumping Operation” described below. The Contractor’s adherence to these guidelines will be closely monitored by USAID, and any infringement by the Contractor may render unacceptable the particular portion of the works to which it applies. The Contractor shall ensure that all his personnel are aware of these Environmental Guidelines and the consequences of not adhering to them.

H. Control System - Storage Tank Water Levels and Low Water Level in Well Casing

1. The elevated storage tanks (provided by others by means of a separate construction contract) provides pressure and additional capacity to meet peak demand of the Health Centers. Gravity flow draw water from the storage tank into the distribution system. The well installation contractor shall install float switches in the elevated water tank to control the well pump operations.

2. The submerged portion electrical cable feeding the well pump shall be equipped with a low water level shut off to protect the pump.


A. Final selected or re-confirmed borehole locations indicating geographic coordinates, facilities (particularly) potential contaminant sources in the influence zone (at least 30m radius), and other features/structures in close proximity.

B. Access roads (if required) plan from existing roads to drilling sites including within the health centers’ compound. The plan shall indicate existing facilities and structures that will be affected and re-construction/restoration plan.


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C. Specifications of drilling rig(s)/machine(s) to be used including its brand, capacity ranges, and performance curves.

D. Drilling methodology (DTH, rotary, mud, etc) with justification, diameter of drilling, and drilling fluids to be used including product data and materials safety data sheet (MSDS).

E. Hydraulic design calculations for submersible pumps and conveyance pipes sizing and type selection. The hydraulic design calculations shall be based on results of water levels and flow rates obtained as part of well performance testing.

F. Product Data: Submit certified performance curves and rated capacities of selected well pumps & motors and furnished specialties and accessories for each type and size of well pump & motor indicated.

G. Submit well casing and screen data including material grade, dimensions, and screen slot design/analysis in relation to aquifer characteristics and gravel pack gradation.

H. Submit well pump control system product data.

I. Gravel Pack: Submit pack materials gradation data/curves and design in relation to aquifer characteristics and screen slot size.

J. Mix design for grout.

K. Shop Drawings: For well pumps. Show layout and connections.

1. Include diagrams for power, signal, and control wiring. 2. Setting Drawings: Include templates and directions for installing system, anchor

bolts, and other anchorages.


A. Field Quality Check Reports:

1. For each well, include the following:

a. Substrata formations. b. Water-bearing formations. c. Water levels. d. Laboratory water quality analysis. e. Well performance (pumping) test data.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For each well pump to include in emergency, operation, and maintenance manuals.

1. Project Record Documents: Record the following data for each water supply well:

a. Casings: Material, diameter, thickness, weight per foot (meter) of length, and depth below grade.

b. Screen: Material, construction, diameter, and opening size. c. Pumping Test: Static water level, maximum safe yield, and drawdown at

maximum yield.


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d. Well Log: Formation log indicating strata encountered. e. Alignment: Certification that well is aligned and plumb within specified

tolerances. f. As-built drawings.

1.6 QUALITY TESTS

A. Well Driller Qualifications: An experienced water supply well driller licensed for the service indicated.

B. Testing Agency Qualifications: Certified laboratories to analyze drinking water quality for compliance monitoring. Water quality testing with at least with the following parameters tested: bacteriological (total coliform, faecal coliform, & e. coli.), physical (colour, odor, taste, turbidity), and chemical analyses (total solids, total dissolved solids, electrical conductivity, pH, ammonia, sodium, potassium, total hardness, calcium, magnesium, total iron, manganese, fluoride, chloride, nitrate, nitrite, alkalinity, carbonate, bicarbonate, sulfate, aluminum, copper, chromium, zinc, boron, and arsenic). The water quality sampling, transport, and testing shall be done in the presence of USAID's representative and USAID selected laboratories.

1.7 FIELD CONDITIONS

A. Well Drilling Water: Provide temporary water and piping for drilling purposes.

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Electrical Components, Devices, and Accessories: Refer to relevant sections in the Contract Document.

B. Comply with AWWA A100 or equivalent for water supply wells.

2.2 PERFORMANCE REQUIREMENTS

A. Minimum Well Performance Capacity: 4.75 gpm (0.3 lt/s).

2.3 WELL CASINGS

A. Steel Casing: AWWA C200 or equivalent, single ply, steel pipe with threaded ends and threaded couplings for threaded joints.

B. PVC Casing:

1. ASTM F 480 and NSF 14 or equivalent, PVC, Schedule 80 bell-and-spigot pipe and couplings for solvent-cemented joints. Include NSF listing mark "NSF wc."or

2. uPVC blind casings are specified they shall confirm to ISO 12818:1992 or equivalent standard with threaded male and female ends.


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Internal Diameter (ID) Wall thickness 150mm (6”) 7.5 – 8.5mm 200mm (8”) 10.0 – 11.2mm 250mm (10”) 12.5 – 14.0mm

C. Pitless Adapter: Fitting, of shape required to fit onto casing, with waterproof seals.

D. Pitless Unit: Factory-assembled equipment that includes pitless adapter.

E. Well Seals: Casing cap, with holes for piping and cables that fits into top of casing and is removable, waterproof, and vermin proof.

2.4 GROUT

A. Cement: ASTM C 150/C 150M or equivalent, Type II.

B. Aggregates: ASTM C 33/C 33M or equivalent, fine and coarse grades.

C. Water: Potable.

2.5 WATER WELL SCREENS

A. Screen Material:

1. Fabricated of ASTM A 666 or equivalent, Type 304 stainless steel (welded; with continuous-slot, V-shaped openings that widen inwardly) (tube; with slotted or perforated surface and designed for well-screen applications).

a. Screen Couplings: Butt-type, stainless-steel coupling rings. b. Screen Fittings: Screen, with necessary fittings, closes bottom and makes tight

seal between top of screen and well casing. c. Maximum Entering Velocity: 0.1 fps (0.03 m/s), or

2. uPVC screen casings are specified they shall confirm to ISO 12818:1992 or equivalent Standard with threaded male and female ends. Internal Diameter (ID) Wall thickness 150mm (6”) 7.5 – 8.5mm 200mm (8”) 10.0 – 11.2mm 250mm (10”) 12.5 – 14.0mm

Screens shall conform to the same standards specified above. Screen slots arrangement, openings and type shall be submitted to USAID/owner for approval before installation. The total opening area should not be less than 10 percent.

2.6 PACK MATERIALS

A. Coarse, uniformly graded filter sand, shall be washed and well-rounded river gravel, of diameter range 6-9 mm and uniformity coefficient in the range 2.5 – 5.


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2.7 SUBMERSIBLE WELL PUMPS

A. Description: Submersible, vertical-turbine well pump. GRUNDFOS, FRANKLIN, and DAYLIFF. These models are selected considering a range of potential pumping depths of the wells. Submersible pumps shall be made from corrosion resistant stainless steel grades.

B. Column Pipe: ASTM A 53/A 53M or equivalent, Schedule 40, galvanized-steel pipe with threaded ends and cast-iron or steel threaded couplings.

C. Capacities: minimum 4.75 gpm (0.3 lt/s).

2.8 MOTORS

A. Comply with NEMA or equivalent designation, temperature rating, service factor, and efficiency requirements for motors.

B. Refer to relevant section in the specification.

2.9 WELL PUMP CONTROLS

A. Pump Control Box shall protects submersible pumps from low or high voltage, a drop in water level, low yield wells, clogged well screens, malfunctioning pumps and motors, and rapid cycling. Pump control boxes will have microprocessors that monitor power-line voltage and pump motor power draw. Pump control box shall be installed in a surface-mounted cabinet.

B. The controls for the groundwater well pumps shall be automatically controlled pumps and shall have three-position "MANUAL-OFF-AUTOMATIC" selector switch on the pump control box cover.

C. A pump low-water cutoff switch shall be installed in the well on the suction pipe and shall shut the pump off when the water level in the well reaches the level in order to protect the pump from running dry. The pump shall not be able to restart until the water level in the well rises above the low water cut off switch.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Take samples of substrata formation at 6-foot (2-m) intervals and at changes in formation throughout entire depth of each water supply well. Carefully preserve samples on-site in glass jars properly labeled for identification.

B. Excavate for mud pit or provide above-ground structure, acceptable to authorities having jurisdiction, to allow settlement of cuttings and circulation of drill fluids back to well without discharging to on-site waterways.

C. Enlarge pilot hole and install permanent casing, screen, and grout. Install first section of casing with hardened steel driving shoe of an OD slightly larger than casing couplings if threaded couplings are used.

D. Set casing and liners round, plumb, and true to line.


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E. Join casing pipe as follows:

1. Ream ends of pipe and remove burrs. 2. Remove scale, slag, dirt, and debris from inside and outside casing before installation. 3. Cut bevel in ends of casing pipe and make threaded and welded joints. 4. Clean and make solvent-cemented joints.

F. The Contractor shall provide to USAID data obtained during drilling regarding the depth and thickness of the water-bearing zone, the water struck depth/level, and the static water level. Based on this data, the Contractor shall propose the number and position of screen casings, which USAID will approve or decline. The screen casings and blind casings shall be of the same specification as specified above. The Contractor shall ensure that the borehole is cased throughout its depth, with a small (1-2% of the total depth of the borehole) allowance for settling.

G. All casing shall be joined by screwing them together, screwing should move easily without force thus ensuring verticality is maintained. To strengthen the joints, the outer side of joint of all steel casings shall be welded with 4mm metal strip to connect adjoining casing. A proper casing shoe, approved by the Engineer shall be fitted to the bottom of the first casing before lowering.

H. Casing installation shall not be done in the absence of the Engineer.

I. Observation Pipe Installation

1. One water level observation pipe should be installed in each well to be drilled. The observation pipes should preferably but not necessarily be 3/4” diameter GI pipe. The observation line should reach approximately as deep as the bottom of the housing line or as determined by the Engineer. The bottom most observation pipe shall be slotted at a distance 2m above the bottom and thereafter slots shall be at an interval of 10m. Each slotted section (screen) shall be 2m length. The uppermost slotted section should be 10m below the static water level.

2. If observation pipe screens are made by hand, slots may be cut with hack saw. Slots may be arranged on two opposite sides in an alternating manner. The slot spacing on each side being about 2cm apart, and care should be taken to ensure the slots are clean and without residues. Drilling holes or torch-cuts are not permitted

3. It must under all circumstance be installed in the borehole in a rectilinear way to allow the free passing of probes. Noncompliance with these requirements entitles USAID to not accept the well.

J. Well Plumbness/Verticality and Alignment Testing

1. Drilled boreholes will be tested for verticality and alignment by means of running a dummy down the casing. The dummy shall consist of a cylinder 10m length with a diameter 20mm less than the well casing. The dummy must pass freely through the entire length of the cased borehole. In the absence of a dummy, testing will be done by running two iron discs at least 3mm thick and of equal diameter or no more than 13mm less than the internal diameter of the borehole casing. The iron discs shall be connected from their centers by at least 3m of steel pipe of at least 25mm diameter. The dummy or the discs and pipe will be supplied by the Contractor and will be lowered to the bottom of the borehole by means of a steel wire passing over a pulley suspended from the machine winch or tripod and connected to the exact center of the dummy or the center of the top disc. The discs should easily pass down the whole


332100-8

depth of the borehole. The deviation of the steel wire connected to the center of the dummy or top disc from the center of the borehole shall not exceed one quarter of the internal diameter of the borehole casing. If these requirements are not met and if the borehole is determined more than 3% out of alignment, the Contractor will, if possible, correct the defects. If not, USAID has the right to reject the borehole and no payments will be made for its drilling and completion.

2. The contractor may also conduct these and other tests he may deem necessary to keep the borehole being drilled vertical and straight. These shall be made entirely at the contractor’s own expense

3. The contractor will report result of measurement and calculated deviation within 24-48 hours after each measurement. Six (6) days after the last measurement in each hole, the contractor shall prepare a report with summary table of instrument readings and calculated deviations. The results will be attached to the report

K. Well Development and Gravel Packing

1. In addition to the cleaning and development of the well before casing installation, the well will be developed continually during filter gravel packing. Washed and well-rounded river gravel, of diameter range 6-9mm and uniformity coefficient in the range 2.5 – 5 will be packed between the annular space of the casing and the well from the bottom until 6m below the ground surface. To avoid bridging of the gravel, which may lead to severe damage of the permeability of the aquifer or damage the borehole wall, it is forbidden to fill–in gravel by mechanized equipment. The gravel shall be inserted into the borehole by hand using a shovel.

2. After packing is complete, the well will be developed by air-lifting, alternating continuous and surging, for a minimum of 24 hours. During well development, the position of the air outlet (bottom of the drill pipe if drilling apparatus is used for air-lifting) shall be in the blind casing below the lowest screen casing and the Contractor shall ensure that the casing string is adequately supported at the top if necessary and is not damaged. Any casing and/or screen damage during installation and well development shall be the responsibility of the Contractor, who shall make the necessary corrections/repairs without additional cost to USAID. The airlift well development shall proceed systematically from top to bottom until the water is clear to the satisfaction of the Engineer and until it meets WHO turbidity standard. When well development is completed, the gravel packing will be topped up if it is found settling below the required depth.

3. Well development and gravel packing shall not be undertaken in the absence of the Engineer.

L. Mix grout in proportions of 1 cu. ft. (0.03 cu. m) or a 94-lb (42.6-kg) sack of cement with 5 to 6 gal. (19 to 23 L) of water. Bentonite clay may be added in amounts of 3 to 5 lb/cu. ft. (1.4 to 2.3 kg/0.03 cu. m) for a 94-lb (42.6-kg) sack of cement. If bentonite clay is added, water may be increased to 6.5 gal./cu. ft. (25 L/0.03 cu. m) of cement.

M. Place grout continuously, from bottom to top surface, to ensure filling of annular space in one operation. Do not perform other operations in well within 72 hours after grouting of casing. When quick-setting cement is used, this period may be reduced to 24 hours.

N. Provide permanent casing with temporary well cap. Install with top of casing 24 inches (600 mm) above finished grade.


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O. Develop wells to maximum yield per foot (meter) of drawdown.

1. Extract maximum practical quantity of sand, drill fluid, and other fine materials from water-bearing formation.

2. Avoid settlement and disturbance of strata above water-bearing formation. 3. Do not disturb sealing around well casings. 4. Continue developing wells until water contains no more than 2 ppm of sand by

weight when pumped at maximum testing rate.

P. Install submersible well pumps and provide access for periodic maintenance.

1. Before lowering permanent pump into well, lower a dummy pump that is slightly longer and wider than permanent pump to determine that permanent pump can be installed. Correct alignment problems.

2. Before lowering permanent pump into well, start pump to verify correct rotation. 3. Securely tighten discharge piping joints. 4. Locate line-shaft well pump near well bottom; locate motor above grade. Install

driver plate to correctly align motor and pump. 5. Connect motor to submersible pump and locate near well bottom.

a. Connect power cable while connection points are dry and undamaged. b. Do not damage power cable during installation; use cable clamps that do not

have sharp edges. c. Install water-sealed surface plate that will support pump and piping.

3.2 CONNECTIONS

A. Piping installation requirements are specified in Section 221113 "Facility Water Distribution Piping & Storage."

B. Ground equipment according to Section 260500 "Electrical Systems."

C. Connect wiring according to Section 260500 “Electrical Systems."

3.3 WELL ABANDONMENT

A. Comply with AWWA A100 when abandoning water supply wells. Fill and seal holes and casings, and restore ground surface to finished grade.

B. Follow well-abandonment procedures of authorities having jurisdiction. Restore ground surface to finished grade.

3.4 FIELD QUALITY TESTS

A. Test Preparation: Clean water supply wells of foreign substances. Swab casings using alkalis, if necessary, to remove foreign substances.

B. Testing Agency: USAID will engage the Engineer to perform tests and inspections.

C. Perform the following tests and inspections:

1. Plumbness and Alignment Testing: Comply with AWWA A100 or equivalent.


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2. Furnish samples of water-bearing formation to testing laboratory and well-screen manufacturer for mechanical sieve analysis.

3. Prepare reports on static level of ground water, level of water for various pumping rates, and depth to water-bearing strata.

4. Performance Test Preparation: Start well pump and adjust controls and pressure setting. Replace damaged and malfunctioning controls and equipment.

5. Performance Testing: Conduct final pumping tests after wells have been constructed, cleaned, and tested for plumbness and alignment.

a. Arrange to conduct tests, with seven days' advance notice, after test pump and auxiliary equipment have been installed. Note water-level elevations referred to for each assigned datum in wells.

b. Provide discharge piping to conduct water to locations where disposal will not create a nuisance or endanger adjacent property. Comply with requirements of authorities having jurisdiction.

c. Provide and maintain equipment of adequate size and type for measuring flow of water, such as weir box or orifice.

d. Measure elevation to water level in wells. e. Perform two bailer or air-ejection tests to determine expected yield. Test at

depths with sufficient quantity of water to satisfy desired yields.

D. Pump Testing

1. General:

a. Two types of pumping test shall be undertaken once the borehole is completed and developed, constant rate pumping and step drawdown tests.

b. Test Pump: Variable capacity test pump with capacity equal to maximum expected yields at pressure equal to drawdown in wells, plus losses in pump columns and discharge pipes. The test pump unit shall consist of an appropriate submersible pump with a capacity approved by the Engineer based on the estimates of borehole yield determined from airlift or a bailer. The pump shall have appropriate number of stages to make it adequate to tackle the dynamic head. The test pump shall have an appropriate power source (generator) to run it, pipe on which to set the pump and all necessary tools and equipment to carry out pumping tests with an accurate measurement of water discharge and water level in the well. A turbine pump unit, run by an easily throttled diesel engine with the capability of discharging the estimated discharge range is considered advantageous over other types. For measurement of water levels in wells, electric water level indicators shall be used. The equipment and crew shall be as stated in the bid document, capable of performing the test pumping to the satisfaction of the Engineer.

c. Water Level Gauges: The contractor should have on the site at least 2 electric gauges suitable for maximum depth of borehole. The device should fit into the observation pipe and should permit direct, convenient and accurate reading of depth of static and dynamic water level.

d. Test pumping shall be conducted without interruption. The Contractor shall ensure that there is adequate backup equipment on site to continue test pumping without interruption. If interruptions occur because of failure of the Contractor’s equipment or personnel, the operation will be resumed afresh.

e. Discharge Measurement: Discharge measurement shall be made by means of standard circular orifice on standard size pipe or by using a weir in combination with timing the filling of a container of known volume. If the later method used, the container shall be large enough so that the time of filling is


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not less 30 seconds. Discharge measurements by a water meter will not allowed.

f. Disposal of Pumped Water - The pumped water must not be allowed to filtrate into the vicinity of the wells. The water should be disposed of by means of discharge pipes towards a nearby natural drain (stream, river), over a distance of at least 200m downstream from the well being tested. Pools should not be allowed to form. Improper discharge water disposal may result in a non-acceptance of the pumping test.

2. Step Drawdown Test

a. A step drawdown test shall also be conducted with a minimum of 5 different pumping rates and for a minimum duration of 12 hour. The discharge shall be measured using a v-notch weir apparatus. A step drawdown test shall start with measuring the static water level. Then the tests should commence with the lowest discharge step. After a constant flow and stabilized dynamic water level are reached the discharge will be increased and the second step will be run until similar conditions of flow and water level are obtained, followed by the 3rd …..nth steps.

b. During or after test the Engineer shall, based on the results, decide whether the test is satisfactory or a further development is needed to be followed by a new test. Test pumping shall not be conducted in the absence of the Engineer.

3. Constant Rate Pump Testing

a. The constant rate pump testing shall be made considering results obtained from the steeped drawdown test.

b. Start and adjust test pumps and equipment to required pumping rates. c. Record readings of water levels in wells and pumping rates at 30-minute

maximum intervals throughout at least 24-hour minimum period. d. Record maximum yields when drawdown is 60 inches (1500 mm) above top of

suction screens after designated times. e. Operate pumping units continuously for eight hours after maximum drawdown

is reached. f. Record returning water levels in wells and plot curves of well recovery rates. g. Remove sand, stones, and other foreign materials that may become deposited

in wells after completing final tests. h. After measuring the static water level, a constant rate pumping test and

recovery measurement shall be undertaken using an appropriate electrical submersible pump and generator for a minimum of 24 hours, although the duration can vary according to the rate of the drawdown. The discharge shall be measured using a suitable-sized water containers and a stopwatch, with suitable time intervals agreed beforehand with USAID. The Contractor will follow the instructions of the Engineer regarding the duration of the constant rate pumping and recovery tests. The field measurements obtained shall be analyzed in order to identify the hydraulic characteristics of the well, optimum yield and the corresponding dynamic water level. Based on the analysis result, the capacity of the pump and pump installation depth will be proposed by the Contractor. In addition, the capacity of the generator that is required to drive the pump will also be proposed by the Contractor.

4. Recovery Test

a. The recovery test shall continue until a minimum of 95% of the water level inside the well has recovered.


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E. Water Analysis Testing:

1. Engage a qualified testing agency to make bacteriological (total coliform, faecal coliform, & e. coli.), physical (colour, odor, taste, turbidity), and chemical analyses (total solids, total dissolved solids, electrical conductivity, pH, ammonia, sodium, potassium, total hardness, calcium, magnesium, total iron, manganese, fluoride, chloride, nitrate, nitrite, alkalinity, carbonate, bicarbonate, sulfate, aluminum, copper, chromium, zinc, boron, and arsenic) of water from each finished well and report the results. Make analyses according to requirements of authorities having jurisdiction. The water quality sampling, transport, and testing shall be done in the presence of USAID's representative and USAID selected laboratories.

2. Analyze water sample from each finished well for bacteriological, physical, and chemical quality and report the results. Make analyses according to requirements of authorities having jurisdiction.

F. Water supply well will be considered defective if it does not pass tests and inspections.

G. Prepare test and inspection reports.

3.5 CLEANING

A. Disinfect water supply wells according to AWWA A100 and AWWA C654 or equivalent before testing well pumps.

B. Follow water supply well disinfection procedures required by authorities having jurisdiction before testing well pumps.

3.6 PROTECTION

A. Water Quality Protection: Prevent well contamination, including undesirable physical and chemical characteristics.

B. Ensure that mud pit will not leak or overflow into streams or wetlands. When well is accepted, remove mud and solids in mud pit from Project site and restore site to finished grade.

C. Provide casings, seals, sterilizing agents, and other materials to eliminate contamination; shut off contaminated water.

D. Exercise care to prevent breakdown or collapse of strata overlaying that from which water is to be drawn.

E. Protect water supply wells to prevent tampering and introducing foreign matter. Retain temporary well cap until installation is complete.

3.7 GROUTING

A. After completion of the pumping test, removal of the test pumping unit and after the last water level recovery observations have been made, the level of the gravel pack will again be checked to see if there is any settlement below the required depth. If it is found below the required depth, it will be topped up to the appropriate level. Based on the actual situation, the annular space between the well and the permanent casing will be cement grouted down


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to at least 6m from the surface in order to prevent contamination of the borehole by surface run-off water.

3.8 WELLHEAD CONSTRUCTION

A. A sanitary seal surrounding must be excavated until an adequately firm formation is reached and constructed in C25 mix concrete with surface dimensions of 0.6 meter length, 0.6 meter width and 0.6 meters height. In such a case as a firm formation is not available close to the surface on which the concrete block can rest, the space around the casing up to 1.5 meters below the surface casing must be filled with C25 mix concrete block. The surface casing must protrude 0.3 meters above the concrete block and shall be capped with a welded steel cover.

3.9 BOREHOLE DISINFECTION

A. Once the borehole has been completed and tested, the Contractor will sterilize the borehole with a chlorine solution yielding at least 50mg/l of active chlorine in all parts of the well. The chlorine solution may be prepared from calcium hypochlorite (HTH), sodium hypochlorite or gaseous chlorine. The chlorine solution should stay in the well for at least 4 hours at the specified concentration.

3.10 COMMISSIONING OF PUMPS & MOTORS

A. Check the insulation resistance of cables and winding of submersible pump.

B. Check direction of rotation of three-phase motors to ensure proper wire connection for high pressure and largest water quantity operation.

C. Check for current unbalance to avoid reduced starting torque.

D. Open discharge valve and operate the pump. If not troubleshoot the system.

E. Conduct other tests and start-up procedures specified in the manufacturer’s manual.

3.11 TRAINING

A. The contractor shall conduct training sessions to selected health centers personnel on how to monitor, operate and maintain the system including pumps and control panels and PV system.

B. The training shall be in line with the operation and maintenance manual to be prepared and submitted.

3.12 ABORTIVE BOREHOLES

A. Any borehole, which on completion yields less water than in the opinion of the Engineer is necessary to render it of use shall be considered as an abortive borehole. The abandoned borehole shall be sealed as described below.


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3.13 FAILURE TO COMPLETE A BOREHOLE

A. Should the contractor fail to complete the borehole due to loss of tools or any other, thus resulting in the borehole being abandoned, USAID shall have the right to instruct the contractor to commence a new borehole as near as practicable to the abandoned at the Contractor’s cost. The Contractor will remove the casing and drill pipes already placed in the hole and refill it with clay or concrete, at the Contractor’s expense. All material extracted from such holes will be considered the property of the Contractor.

3.14 SEALING OF ABANDONED OR ABORTIVE BOREHOLE

A. Filling materials shall consist of cuttings from the borehole, concrete, grout cement, clay or sand. In the event that an abandoned or abortive borehole is in a water-bearing formation consisting of coarse gravel and producing wells are nearby, care must be taken to select sealing materials that will not affect the producing wells. Concrete may be used if the producing wells can be shut down for a sufficient time to allow the concrete to set. Clean, disinfected sand or gravel may also be used as fill material in the water-bearing formation. The remainder of the well, especially the upper portion, shall be filled with clay, concrete, grout, or neat cement to exclude surface water. The method of using clay as the upper sealing material is especially applicable.

3.15 RECOVERY OF SCREEN AND CASING

A. Casing and screens from unsuccessful well due to the Contractor’s fault will be recovered by pulling using the hoist line on the drilling rig or an appropriate hydraulic jack. The production line recovery will be attempted first (only in case of bayonet disconnect) and later the housing line, unless the casings are telescopically installed.

B. The casing is pulled using a wire rope strap and it is cut into appropriate lengths for use on the next hole. Where casing cannot be pulled back, the Contractor may use hydraulic jacks with appropriate auxiliary equipment to pull casings. Before being returned to inventory or before being used on the next hole, recovered casing shall be inspected by the Engineer.

3.16 FISHING FOR LOST OR STUCK TOOLS AND EQUIPMENT

A. Fishing will be done using the most appropriate techniques and fishing tools, in order to minimize the time required for fishing and with minimum damage to the hole and to the items being fished. Standard fishing tools as well as special tools fabricated on site or in a shop may be used in a situation where drilling tools and equipment are lost or stuck in a hole. The Engineer shall decide whether it is in the interest of USAID to carry out operations in order to salvage a hole or for any other reason. If in the opinion of the Engineer it is not in the interest of USAID, the contractor may fish to recover tools and other equipment at his own expense, without creating any delays to the contract schedule.

3.17 RECORDS

A. The Contractor shall, for each well, keep daily activity records. The records shall contain the information as specified below. In addition, separate records should be supplied for each borehole upon completion.

Site name


332100-15

GPS coordinates of the borehole Date of reporting Names of Foremen and Drillers Method of drilling Diameter of hole and depth of changes in diameter Depth of hole at start and end of shift or working day Description of strata drilled with depth of transitions encountered Depth at which water is struck Water level at the start of each working day Yield of air lifted water when drilling or developing with air Time log showing rate of penetration in minutes per meter, type of bit, standby time due to breakage. Depth at which formation samples are taken Records of components and quantities used or added to the drilling fluid or air Electric conductivity measurements during pumping tests Problems encountered during drilling Details of installations in the borehole (if any) Depth and description of well casing Depth and description of screens Details of work to be invoiced at hourly rate (e.g. pumping tests)

A copy of the Daily Record shall be made available daily to USAID, and should include any other pertinent data as may be requested by USAID. A detailed drilling report, in-cluding the drilling log, screen and casing arrangement, pumping test analyses, authenti-cated water quality test results, problems encountered and all required suggestions and recommendations shall be compiled and submitted in a bound report in three hard copies and 1 electronic copy to USAID, before final payment is made to the Contractor.

PART 4 - PAYMENT

4.1 Payment for well drilling and development shall be in accordance with conditions of the contract.



481400-1

SECTION 481400 – SOLAR POWER SYSTEM GENERAL

PART 1 - GENERAL


A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 48 Specification Sections, apply to this Section.

1.2 SUMMARY

A. The work includes furnishing all required labor, materials, tools apparatus and equipment for the complete installation and start of the solar energy collectors as part of the overall solar energy systems shown on the drawings and described in the Specifications including all miscellaneous items incidental to the work.

1.3 MEASUREMENT AND PAYMENT

A. Work under this Section shall be considered as incidental to the work and shall be paid for under the various proposal items required for the successful completion of the work.

1.4 REFERENCES

A. The publications listed below form a part of this specification.

1. US NATIONAL ELECTIC CODE (NEC), 2011 version

a. NEC Article 690



481410-1

SECTION 481410 – PHOTOVOLTAIC MODULES, COMBINER BOXES AND RACKING

PART 1 - GENERAL



1.2 SUMMARY

A. It is the intent of this specification to secure the components and installation polycrystalline photovoltaic modules and associated equipment. See drawings for initial quantities and to be reviewed after contractor final approved design. Components rating indicated is based on preliminary design and shall be reviewed with contractor final approved design. Installation is to be carried out as shown in the provided drawings and described in these Specifications, including all miscellaneous items incidental to the work.

B. The work includes furnishing all required labor, materials, tools, apparatus and equipment for the complete installation and start of the solar energy collectors as part of the overall solar energy systems shown on the drawings and described in the Specifications including all miscellaneous items incidental to the work.

1.3 RELATED WORK

A. Section 481400 Solar Power System General

B. Section 481425 Inverters and Charge Controllers

C. Section 481430 Gelley Deep Cycled Batteries

D. Section 260500 Electrical Systems

E. Section 051200 Structural Steel

1.4 REFERENCES

A. American National Standards Institute (ANSI):

1. ANSI/UL 1703 Standard for Flat-Plate Photovoltaic Modules and Panels or equivalent.

1.5 SUBMITTALS

A. Product Data: Submit specified products as follows:

1. Manufacturer's product data. 2. Manufacturer installation instructions.


481410-2

3. Complete system design, sizing calculations, components mounting/erection proposal.

4. Test and Evaluation Reports: Certified test reports showing compliance with specified performance characteristics and physical properties, including module flash test results (STC watts).

5. Catalog pages illustrating products to be incorporated into project. 6. Shop drawing for photovoltaic system support and installation. 7. Grounding and bonding detail design.

B. Warranty Documentation: Submit warranty documents.

1.6 WARRANTY

A. Manufacturer's Warranty: Submit, for Owner's acceptance, manufacturer's standard warranty document executed by authorized company official or agent in the country. Manufacturer's warranty is in addition to, and does not limit, other rights Owner may have under other Contract Documents.

B. The warranty period for the photovoltaic system shall not be lower than 20 years.

PART 2 - MATERIALS

2.1 PHOTOVOLTAIC MODULES

A. Description:

1. Compatibility:

a. Ensure components and materials are compatible with specified accessories and adjacent materials.

2. Module type and size:

a. Health center building PV

I. Module referred for preliminary design - locally available DAYLIFF

model YL250 module II. Length:1640 mm

III. Width: 990 mm IV. Height: 35 mm V. Weight: 18.5 kg

VI. Minimum Quantity proposed:16

b. Solar water pump

I. Module referred - locally available DAYLIFF model YL250 module II. Length:1640 mm

III. Width: 990 mm IV. Height: 35 mm V. Weight: 18.5 kg

VI. Minimum Quantity proposed: 8


481410-3

B. Module Performance at STC:

1. Maximum Power (Pmax): 250 W 2. Minimum Module Efficiency: 15 percent. 3. Tolerance: Minus 0 to plus 5 percent. 4. NOCT: 47.5 degrees C 5. Maximum Series Fuse Rating: 15A. 6. Application Class, IEC 61730: Class A or equivalent 7. Maximum System Voltage:

a. NEC Rating: 600V. b. IEC Rating: 1000V.

C. Output cables: 12 AWG MC-4 connectors

2.2 SYSTEM OVERCURRENT PROTECTION

A. Combiner Box:

1. Fuses: 15 A 2. Number of inputs (positive and negative): 8 3. Number of outputs (positive and negative): 2 4. Cable size range: 4 – 6 AWG 5. Enclosure type: NEMA 3R or equivalent

2.3 MOUNTING STRUCTURE

A. Roof mounting racks shall be provided and installed as shown in the drawings. Specific characteristics include:

1. Roof- based mounting structure. 2. 2 modules high, in portrait orientation 3. Bottom-mount module mounting 4. A minimum module clearance of 40cm

B. All structural members shall be galvanized steel or aluminum. Posts and Top Chords are hot dipped to ASTM A123 or equivalent, purlins are pre-galvanized to a G140 minimum and brackets to a G90 minimum. Module hardware is stainless steel and all other hardware is hot dipped galvanized.

C. All member connections shall be bolted. No on-site welding shall be required.

PART 3 - EXECUTION

3.1 INSTALLATION

A. PV modules and mounting systems shall be installed as shown in the drawings.


481410-4

B. Mounting structure shall be modified based on actual panels requirement after contractor’s final approved design.

C. Flat-Roof Mounting structure:

1. No roof penetrations except for bolts. 2. Self-ballasting. 3. Wind-tunnel tested to 100 km/h wind. 4. Service Life: 25 years. 5. Dimensional tolerance for side-by-side solar modules up and down the rack shall be

no greater than 0.5% of their stated width or length.

D. Accurately fit, align, securely fasten and install free from distortion or defects.

E. Protect existing roof structure from damage during installation by using appropriate metallic sheet to step on it.

F. Replace any damage roof parts during installation.



481425-1

SECTION 481425 – INVERTERS AND CHARGE CONTROLLERS

PART 1 - GENERAL



1.2 SUMMARY

A. It is the intent of this specification to secure the components and installation of power inverters and maximum power point tracking (MPPT) charge controllers. These components will serve off-grid, PV/battery power systems. See drawings for initial quantities and to be reviewed after contractor’s final approved design. Components rating indicated is based on preliminary design and shall be reviewed with contractor final design. Installation is to be carried out as shown in the provided drawings and described in these Specifications, including all miscellaneous items incidental to the work.

B. The work includes furnishing all required labor, materials, tools apparatus and equipment for the complete installation and start of the solar energy collectors as part of the overall solar energy systems shown on the drawings and described in the Specifications including all miscellaneous items incidental to the work.

1.3 REFERENCES

A. All equipment furnished under these specifications shall conform to applicable standards of NATIONAL, IEEE, ANSI, NEMA, UL or equivalent

1.4 SUBMITTALS


1. Manufacturer's product data. 2. Manufacturer installation instructions. 3. Catalog pages illustrating products to be incorporated into project. 4. Manufacture complete system design.

B. Equipment, components and conductor sizing calculation

C. Warranty Documentation: Submit warranty documents. The manufacturer shall provide a minimum of five (5) years of warranty coverage for all equipment. Pls. see typical warranties on inverter and charge controller and write these separately.

PART 2 - MATERIALS

2.1 INVERTERS


481425-2

A. Description: 1. Compatibility: Ensure components and materials are compatible with specified

accessories and adjacent materials. 2. Design/components:

a. Transformer less design

B. Design Criteria:

1. Certified in accordance with UL 1998, UL 1699B, IEEE 1547 or equivalents

C. Performance Criteria:

1. DC power characteristics:

a. Maximum DC power: 5000 W b. Rated input voltage: 48 V c. Number of inputs: 1

2. AC power characteristics

a. Rated AC power: 5000 W / 5000 VA b. Phases: 1-phase c. Nominal voltage: 220 V d. Frequency: 50 Hz e. Pure sine wave output

3. Protective devices:

a. DC reverse polarity protection b. AC short-circuit current capability c. All-pole-sensitive residual-current monitoring unit d. Arc-fault circuit interrupter

4. Minimum efficiency: 90%

5. Operating Conditions:

a. Operating temperature range: -25C to 60C b. Relative Humidity: 100%

2.2 CHARGE CONTROLLERS

A. Description:

1. Compatibility: Ensure components and materials are compatible with specified accessories and adjacent materials.

2. Design/components:

a. Integrated DC disconnect

B. Performance Criteria: 5kW for HC/3KW for Solar pump:

1. DC input electrical characteristics:

a. Maximum DC power: 5000 W/3000W b. Number of inputs: 1

2. DC output electrical characteristics:

a. Rated input voltage: 48 V b. DC voltage range: 41 V – 63 V


481425-3

c. Battery compatibility: Lead acid

3. Protective devices:

a. DC reverse polarity protection b. DC fuse c. AC short-circuit d. AC overload e. Over temperature f. Battery deep discharge

4. Maximum efficiency: 96%

5. Operating Conditions:

a. Operating temperature range: -25C to 60C

6. Features:

a. Charging: 1) State of charge calculation 2) Full charge 3) Equalization charge

b. Battery temperature sensor c. Data cable

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install equipment in accordance with manufacturer’s instructions, the provided drawings and approved contractor’s final design.

3.2 OPERATION AND MAINTENANCE TRAINING

A. Operating personnel shall be instructed (a minimum of two hours) by the representative in the proper operation and maintenance of the unit on the test day.

B. Operations and troubleshooting manuals shall be left at the site.



481430-1

SECTION 481430 – GELLEY DEEP CYCLED BATTERIES

PART 1 - GENERAL



1.2 SUMMARY

A. The work includes furnishing all required labor, materials, tools, apparatus and equipment for the installation of complete, high-capacity Gelley deep cycled battery banks as shown in the drawings and described in the Specifications, including all miscellaneous items incidental to the work. Refer this specification and drawings for initial quantities and to be reviewed after contractor’s approved final design. Components rating indicated is based on preliminary design and shall be reviewed with contractor final approved design.

B. The work includes furnishing all required labor, materials, tools apparatus and equipment for the complete installation and start of the solar energy collectors as part of the overall solar energy systems shown on the drawings and described in the Specifications including all miscellaneous items incidental to the work.

1.3 SUBMITTALS


1. Manufacturer's product data. 2. Amp-hour capacity at various discharge rates. 3. Manufacturer’s installation instructions. 4. Cycle life vs. Depth of discharge, performance curve. 5. Open circuit voltage vs. State of charge, performance curve. 6. Capacity vs. temperature, performance curve. 7. Battery bank sizing calculation 8. Cable sizing calculation

B. Manufacturer's Instructions:

1. Battery installation and maintenance manuals shall include the manufacturer’s recommended torque for connector bolts.

C. Source Quality Check: Submit documentation verifying that components and materials specified in this Section are from a single manufacturer.

D. Warranty Documentation: Submit warranty documents. The manufacturer shall provide a minimum of ten (10) years of warranty coverage for replacement of defective battery cells and parts.

PART 2 - MATERIALS


481430-2

2.1 GELLEY DEEP CYCLED BATTERIES

A. Total Quantities:

1. Capable to deliver 1.5 days autonomy with 12KWH daily energy for health center

2. Capable to deliver 1 day autonomy with respect to selected solar pump wattage for solar water pump system.

2.2 ACCESSORIES

A. Connectors: Each battery system shall include the necessary inter-cell and inter-module connectors and terminal plates. The connectors shall be lead-tin plated copper and shall include stainless steel hardware.

B. Module lifting straps.

C. Anti-oxidation grease.

D. Material Safety Data Sheets.

E. Each module shall include an easily removable, transparent safety shield to cover all electrical connections.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Anchoring: Battery racking systems shall be anchored to the battery room floor as specified by the manufacturer.

B. Connections:

1. Post Preparation: The terminal posts of each battery are to be scoured to ensure the lowest resistance. The anti-oxidation grease supplied by the manufacturer shall be applied to all terminal mating surfaces in the manner specified by the manufacturer’s installation instructions.

3.2 FIELD TESTS

A. Commissioning: Batteries shall be given and initial full charge as part of the overall system commissioning.


USAID/EthiopiaU.S. Agency for International Development

US Embassy, Entoto StreetPO Box 1014

Addis Ababa, Ethiopia

Ethiopia Health Infrastructure Program (EHIP)

Documents

Transcript of Ethiopia Health Infrastructure Program (EHIP)