Republic of the PhilippinesProposed Production Well & Collection CenterGov. Ramos Avenue, Zamboanga City

ZAMBOANGA CITY WATER DISTRICT Pilar Street, Zamboanga City

I. Project Title

Proposed Production Well & Collection CenterGov. Ramos Avenue, Zamboanga City,

II. Background

2.1 This project is a supplementary payment facility that is proposed to facilitate ZCWD customers in paying their bills which aims to reduce the struggles of long queues and anticipates providing comfort to the customers while waiting for their turn.

2.2 The proposed project is set to utilize the area where existing Production Well Facility is located. It is primarily situated at Lot 3-B-2, Gov. Ramos Avenue, Barangay Sta. Maria, Zamboanga City having total lot area of 359 square meters. The area encloses existing generator set with steel canopy, production well borehole system with concrete shelter and concrete fence with steel gate.

2.3 The proposed 140 square meters floor area facility encompasses Security Area, Operators Room, Collectors Area, Concessionaires Lounge, Supervisors Cubicle, Rest Area/File Storage/Janitorial Area and toilets. This proposal covers the parking area, relocation of existing discharge pipe, relocation of front fence and relocation of generator set with newly fabricated generator set concrete pad/foundation. Furniture, appliances specified in the proceeding item of works is covered in this proposal.

2.4 This project has been submitted for initial review by the Zamboanga City Planning Office in conformity to the setback requirement.

III. Purpose and Objectives

3.1 The proposed Payment Facility project will mainly serve the ZCWD (Zamboanga City Water District) customers for barangays nearly located with the proposed facility or any customer who would wish to transact with this proposed payment facility.

3.2 The facility may help alleviate the inconvenience that many customers experience when they are unable to pay on schedule due to long queues and heavy traffic going to ZCWD Main Payment Center at city proper.

IV. General

4.1 PERMITS AND CLEARANCES:The Contractor shall bear the preparations and payments of all the necessary permits and clearances of the different agencies; this include the conduct of lot relocation to established the required boundary, and other forms of works necessary for the commencement of the project. 4.2 WORK INCLUDED: Lot Relocation, staking out of building, establishment of lines, grades and benchmark. All excavation works including all necessary shoring bracing, and drainage of storm water from site. All backfilling, filling and grading, removal of excess material from site Protection of property, work and structures, workmen, and other people from damage and injuries.

4.3 LINES, GRADES, BENCHMARKS:

Stake out accurately the lines of the building and of the other structures included in the contract, and establish grades therefore after which secure approval by Engineer before excavation work commenced. Erect basic batter boards and basic reference marks, at such places where they will not be disturbed during the construction of the foundations.4.4 DISPOSAL OF SURPLUS MATERIALS:

Any excess materials remaining after hauling and spreading shall be disposed of after the completion of the earthwork to ZCWD Property in Lupong Road, Cabatangan, Z.C.. Excavated material deposited in spoil areas shall be graded to a uniform surface.

V. Scope of Works/ Item Description/Specifications

5.1 Structure Excavation

General

This pertains to Item 103(1)a, standards set by the Department of Public Works and Highways (DPWH) latest edition of the Bluebook. Procedures, manpower and equipment to be used shall comply with the DPWH Bluebook Standards. Excavation works shall cover all necessary pit digging for Building footing, Wall footing, Generator set concrete pad, and pipe laying excavation for the relocation of discharge pipe. Except when specifically provided to the contrary, excavation shall include the removal of materials of whatever nature encountered, including all obstructions of any nature that would interfere with the proper execution and completion of the work. The removal of said materials shall conform to the lines and grades shown or ordered. Unless otherwise provided, the entire construction site shall be stripped of all vegetation and debris, and such materials shall be removed from the site prior to performing any excavation or placing any fill. The contractor shall furnish, place and maintain all supports and shoring that may be required for the sides of the excavations, and all pumping, ditching, or other approved measures for the removal or exclusion of water, including taking care of storm water and waste water reaching the site of the work from any source, so as to prevent damage to the work or adjoining property.The walls and faces of all excavations in which workers are expose to danger from unstable ground shall be guarded against by a shoring system, sloping of the excavation, or some other acceptable method. The Contractor shall furnish, install, and maintain such sheeting, bracing, etc., as may be necessary to protect the workers and to prevent any movement of earth which could injure or delay the work or endanger adjacent structures. In excavation where workers may be required to enter, excavated or other materials shall be effectively stored and retained at least 600mm or more from the edge of the excavation. All excavation and trenching operations shall conform with any and all national, provincial, and local safety requirements.

5.1.1 Excavation Beneath Proposed Structures

Except where otherwise specified for a particular structure or ordered by the Engineer, excavation shall be carried to the grade of the bottom of the footing or slab. Where shown or ordered, areas beneath proposed structures shall be over-excavated. When such over-excavation is shown on the Drawings, both over-excavation and subsequent backfill to the required grade shall be performed by the Contractor at his own expense. When such over-excavation is not shown but is ordered by the Engineer, such over-excavation and any resulting backfill will be paid for under a separate unit price bid item if such bid item has been established, otherwise, payment will be made in accordance with the negotiated prices. After the required excavation or over-excavation has been completed, the exposed surface shall be scarified to a depth of 150mm (6 in.) brought to optimum moisture content, and rolled with heavy compaction equipment to ninety-five percent (95%) of maximum density.

5.1.2 Excavation Beneath Areas to be Paved

Excavation under areas to be paved shall extend to the bottom of the aggregate base, if such base is called for, otherwise, it shall extend to the bottom of paving. After the required excavation has been completed, the exposed surface shall be scarified, brought to optimum moisture content, and rolled with heavy compaction equipment to ninety percent (90%) of maximum density.

5.1.3 Disposal of Excess Excavated Material

The Contractor shall remove and dispose all excess excavated material at ZCWD Property in Lupong Road, Cabatangan, Z.C. in a manner approved by the Engineer, the cost thereof shall be made chargeable to the contractor.

5.1.4 Excavation in Vicinity of Trees

Except where trees are shown on the drawings to be removed, trees shall be protected from injury during construction operation; and no tree is to be removed without written permission from the Engineer. No tree roots over 50 mm (2 in.) in diameter shall be cut without the permission of the Engineer. Trees shall be supported during excavation as may be directed by the Engineer.

5.2 Foundation Fill

General

This pertains to Item 103(3), standards set by DPWH Department of Public Works and Highways latest edition of the Bluebook. Excavated materials that were acquired earlier during excavation can be used to fill the excavated area, however during compaction, the materials maybe insufficient to fill the excavated area entirely. It is the responsibility of the contractor to provide additional filling materials to make use of.

Backfill shall not be dropped directly upon any structure or pipe. Materials used for backfill shall be selected material, free from grass, roots, brush or other vegetation, or rocks having maximum dimension larger than 150 mm (6 in.). material placed within 150 mm (6 in.) of any structure or pipe shall be free of rocks or unbroken masses or earth materials having maximum dimension larger than 75 mm (3 in.). Backfill shall not be placed around or upon any structure until the concrete has attained sufficient strength to withstand the loads imposed.

5.2.1 Backfill Around and Beneath Proposed Structures and Paved Areas

Except where otherwise specified for a particular structure or ordered by the Engineer, backfill placed around and beneath proposed structures and paved areas, shall be placed in horizontal layers not to exceed 200 mm (8 in.) in thickness, as measured before compaction, where compaction is attained by means of sheep foot rollers, pneumatic type rollers or any heavy compaction equipment approved by the Engineer. Where the use of heavy compaction equipment is impractical, the layers shall not exceed 150 mm (6 in.) in thickness before compaction, and compaction shall be attained by means of hand-operated power driven tampers. The backfill shall be brought up evenly, with each layer moistened and compacted by mechanical means to ninety-five percent (95%) of maximum density beneath proposed structures, and ninety percent (90%) of maximum density around the sides of structures and beneath proposed paved area.

5.2.2 Embankment Fill

The area where an embankment is to be constructed shall be cleared of all vegetation, roots and foreign materials. Following this, the surface shall be moistened, scarified to a depth of 150 mm (6 in.) and rolled or otherwise mechanically compacted to ninety percent (90%) of maximum density elsewhere. Embankment fill shall be placed in horizontal layers not to exceed 200 mm (8 in.) in thickness, as measured before compaction, where compaction is attained by means of sheep foot rollers, pneumatic type rollers or any approved heavy compaction equipment. Where the use of these equipment is impracticable, the layers shall not exceed 150 mm (6 in.) in thickness before compaction, and compaction shall be attained by means of hand-operated power-driven tampers. The backfill shall be brought up evenly with each layer moistened and compacted by mechanical means to ninety-five percent (95%) of maximum density under proposed structures, and ninety percent (90%) of maximum density elsewhere. The top 500 mm (20 in.) of backfill or embankment shall consist of loamy earth free of rocks larger than 25 mm (1 in.) in maximum dimension.

5.3 Demolition Works (Masonry & Concrete)

Demolition Works covers the existing concrete fence at the faade of the perimeter fence, including the dismantling of existing steel gate, and the borehole concrete shelter. Only masonry and concrete structures for demolition are measured per square meter and deemed for payment. Any dismantling works related to the structure is part of the contractors scope at no extra charge.

5.4 Reinforced Concrete

This pertains to Item 405, standards set by DPWH Department of Public Works and Highways latest edition of the Bluebook. This item covers all the structural element of the proposed building. Exteriors Ground Slabs such as ramp/parking area, driveway or perimeter area outside the building covers at 200mm thickness. Thickness may vary upon actual implementation at site. The use of bagger mixer/transit mixer and concrete vibrator is required for concreting and shall conform to the ideal materials tested as per DPWH Standards. Concrete Sampling for material testing shall comply with the standard procedures set by DPWH Bluebook for proper guidance. It is obligatory to use the Class A concrete mix for all the structural elements of the building.

The work to be undertaken under this Section shall include all labor, materials, equipment, plant and other facilities and the satisfactory performance of all work necessary to complete all concrete work shown on the Drawings and specified herein. All work included under this Section shall be subject to the General Conditions accompanying these specifications. The Contractor is required to refer especially thereto.

5.4.1 MATERIALS

CementExcept as may be otherwise provided in these specifications, cement shall conform with the Standard Specifications for Portland Cement (ASTM C- 150 Latest Revision) and shall be Type I. The cement shall be of one brand and shall not be more than three (3) months from date of manufacture.Concrete-AggregatesConcrete aggregates shall be well-graded, clean, hard particles of gravel or crushed rock conforming with the Standard Specifications for Concrete Aggregates (ASTM C-33 Latest Edition).The maximum size of the aggregates shall not be larger than one-fifth (1/5) of the narrowest dimension between forms and not larger than three-fourths (3/4) of the minimum clear spacing between individual reinforcing bars, or bundles of bars, and in no case larger than 38 mm (1-1/2 in.) in diameter except that larger diameters may be allowed in massive concreting with written permission from the Engineer.

Water used in mixing concrete shall be clean and free from injurious amounts of oils, acids, alkali, organic materials, or other substances that may be deleterious to concrete or steel.

Reinforcing Steel

All reinforcing steel bars used shall be of deformed type, new, free from rust, oil, defects, Greases, or kinks. They shall conform with the latest edition of National Structural Code for Buildings with a minimum grade equal to 275 Mpa unless otherwise shown on the plans.

5.4.2 STORAGE OF MATERIALS

Cement and aggregates shall be stored in such a manner as to prevent deterioration or intrusion by foreign matter. Any material which has deteriorated or which has been damaged shall not be used for concrete. Steel shall be stored under cover or otherwise prevented from rusting.

5.4.3 TESTING OF MATERIALS

The Owner or his duly authorized representative or the Engineer shall periodically order the test of any material supplied by the Contractor entering into concrete or reinforced concrete to determine its suitability for the intended purpose. Such tests shall be in accordance with the standard of the American Society for Testing and Materials, as noted elsewhere in this Specification. Samples shall be provided by the Contractor without cost to the Owner. Expenses for the testing and cost of transporting samples to testing laboratory shall be borne by the Contractor. Compressive strength specimen for tests of concrete during construction shall be according to Making and Curing of Concrete Compression and Flexural Strength Test Specimens in the Field (ASTM C-31).

5.4.4 CONTROLLED STREGTH OF CONCRETE

Concrete for structural elements, including slabs on grade within water-retaining structures and shall develop minimum 28-day compressive cylinder strength of 20.68 mega Pascal (3,000 psi), unless otherwise specified in the plans. Concrete for non-structural elements such as cradles, un-reinforced encasements, thrust blocks, and partition walls shall develop a minimum of 28-day cylinder strength of 17.25 MPa (2,500 psi), unless otherwise specified in the plans.

5.4.5 EXCLUSION OF WATER

No concrete shall be placed in any structure until all water entering the space to be filled with concrete has been properly cut off or has been diverted by pipes, or other means, and carried out of the forms, clear of the work. No concrete shall be deposited under water without the explicit permission of the Engineer, and then only in strict accordance with his decisions, nor shall the Contractor, without explicit permission, allow still water to rise on any concrete until the concrete has attained its initial set. Water shall not be permitted to allow over the surface of any concrete in such manner and at such velocity as will injure the surface finish of the concrete. Pumping or other necessary dewatering operations for removing ground water, if required, will be subject to the approval of the Engineer.

5.4.6 MIXING CONCRETE

Hand mixing is allowed only in mixing aggregates and cement for plastering and mortar purposes. No hand mixing shall be allowed pouring of concrete on monolithic structures except in emergency such as mixer breakdown during concreting operations and this shall stop as soon as the pour is completed, at a construction joint shown or otherwise designated by the Engineer. All concrete shall be machine mixed for at least one and one- half (1-1/2) minutes after all materials, including water, are in the mixing drum.

The mixer shall of an approved size and type which will ensure a uniform distribution of material throughout the mass. It shall be equipped with a device for accurately measuring and controlling the amount of mixing water in such batch. The first batch of concrete materials placed in the mixer shall contain a sufficient excess of cement, sand, and water to coat the inside of the drum without reducing the cement of the mix to be discharged.

Re-tempering, i.e, remixing with the addition of water to concrete that has been partially hardened will not be permitted.

5.4.7 PREPARATION OF STRUCTURE FOR CONCRETE

Earth surfaces shall be thoroughly wetted by sprinkling prior to the placing of any concrete, and these surfaces shall be kept moist by frequent sprinkling up to the time of placing concrete thereon.

Concrete surfaces upon or against which concrete is to be placed, where the placement of old concrete has been stopped or interpreted so that, in the opinion of the Engineer, the new concrete cannot be incorporated integrally with that previously placed, are defined as construction joints. The surfaces of the horizontal joints shall be leveled with a wooden float to provide a reasonably smooth surface. A surface consisting largely of coarse aggregate shall be avoided. Except where the drawings call for joint surfaces to be painted, the joint surfaces shall be cleaned of all laitance, loose or defective concrete, and foreign material. Such cleaning shall be accomplished by sandblasting followed by thorough washing. All pools of water shall be removed from the surface of construction joints before the new concrete is placed. After the surfaces have been prepared to the satisfaction of the Engineer, all approximately horizontal construction joints shall be covered with a layer of mortar approximately 25 mm (1 in.) thick.

The mortar shall have the same proportion of cement and sand as the regular concrete mixture, unless otherwise directed by the Engineer. The water-cement ratio of the mortar in place shall not exceed that of the concrete to be placed upon it, and the consistency of the mortar shall be spread uniformly and shall be worked thoroughly into all irregularities of the surface, and wire brooms shall be used where possible to scrub the mortar into the surface. Concrete shall be placed immediately upon the fresh mortar.

When the placing of concrete is to be interrupted long enough for the concrete to take a set, the working face shall be given a shape by the use of forms or other means that will secure proper union with subsequent work, provided that construction joints shall be made only where approved by the Engineer.

5.4.8 PLACING CONCRETE

Concrete which upon or before placing is found not to conform with the requirements specified herein shall be rejected and immediately removed from the work. Concrete which is not placed in accordance with these specifications, or which is of inferior quality, as determined by the Engineer, shall be removed and replaced by and at the expense of the Contractor. No concrete shall be placed except in the presence of a duly authorized representative of the Engineer. Prior to placing any concrete, the Contractor shall give the Engineer twenty-four (24) hours written notice.

Concrete shall be deposited in its final position without segregation, re-handling, or flowing. Placing shall be done in preferably with buggies, buckets, or wheelbarrows. No chutes will be allowed except to transfer complete from hoppers to buggies, wheelbarrows, or buckets in which case, they shall not exceed six (6) meters (20 ft.) in aggregate length.

Placing of concrete with a free drop or fall more than 1.20 meters (4 ft.) shall not be allowed, except when approved by the engineer and when approved sheet metal conduits, pipes, or elephant trunks are employed. When employed these conveyors shall be kept fall of concrete and the ends kept buried in newly placed concrete as pouring progresses.

Concrete in forms shall be deposited in uniform horizontal layers not deeper then 450mm (18in.) and care shall be taken to avoid inclined layers or incline contraction joints except where such are required for slopping members. Each layer shall be placed while the previous layers are still soft. The rate of placing concrete in forms shall not exceed 1.5mtrs. (5ft.) of vertical rise per hour.

5.4.9 FORMS

The Contractor shall provide forms to confine the concrete and shape it to the repaired lines. Plastering, in general, shall not be allowed. The Contractor shall assume full responsibility for the adequate design of all forms. However, forms which in the opinion of the Engineer are unsafe or inadequate in any respect may at any time be condemned by the Engineer, and the Contractor shall promptly remove the condemned forms from the work and replace them at his own expense. A sufficient number of forms of each kind shall be provided to permit the required rate of progress to be determined.Whenever, in the opinion of the Engineer, additional forms are necessary to maintain the progress schedule, such additional forms shall be provided by the Contractor at his own expense. The design and inspection of concrete forms, false work, and shoring shall comply with the applicable safety regulations, and as may be specified in the General Conditions of these Specifications.

5.4.9.1 Materials

Except as otherwise expressly approved by the Engineer, all lumber brought at the job site for use as forms, shoring, or bracing shall be new material.All forms shall be smooth surface forms and shall be of the following materials:Walls - steel or plywood panelsColumns - steel, plywood or surface lumberSlab - plywood All other work - steel panels, plywood or surface lumber

Column forms shall be checked for plumb ness before concrete is deposited. Hand holes shall be provided in column forms at lowest points of pour lifts to render this space accessible for cleaning.

All girder, beam, and slab centerlines shall be crowned at least 6.4mm (1/4 in.) in all directions for every 4.57 meters (15 ft.) span. However, cambers from all cantilevers shall be as indicated on the plans or obtained from the Engineer by the Contractor.

The following are the tolerance limits for formwork:

Variation from plumb:

In lines and surface of columns, piers, walls and risers:In 3.05 m (10 ft) 6.3 mm (1/4 in.) 6.10 m (20 ft) 9.5 mm (3/8 in.) 12.20 m (40 ft) or more 19.0 mm (3/8 in.)

For exposed corner columns and/or piers, control joint grooves and other conspicuous lines:In any bay 6.10 m (20 ft) max. 6.3 mm (1/4 in.)In 12.20 m (40 ft) or more 13.0 mm (1/2 in.)

Variations in cross-sectional dimensions of columns and piers, beams, and thickness of walls and slabs:

Minus 6.3 mm (1/4 in.)Plus 13.0 mm (1/2 in.)

Footings

Variations in dimensions on drawings (applied to concrete only and not to reinforcing bars or dowels):

Minus 13.0 mm (1/2 in.)Plus 50.0 mm (2 in.)Misplacement of eccentricity, two percent (2%) of the footings width in the direction of misplacement but not to exceed 50.0 mm (2 in.)

Reduction in thickness - five percent (5%) at specified thickness

5.4.9.2 Design

All forms shall true in every respect to the required shape and size, shall conform with the established alignment and grade, and shall be of sufficient strength and rigidity to maintain their position and shape under the loads and operations incident to placing and vibrating the concrete. Suitable and effective means shall be provided on all forms for holding adjacent edges and ends of panels and sections tightly together and in accurate alignment so as to prevent the formation for ridges, fins, or offsets, or similar surface defects in the finished concrete. Plywood, 16.0 mm (5/8 in.) and greater in thickness, may be fastened directly to studding if the studs are close enough to prevent visible deflection marks in concrete. The forms shall be tight so as to prevent the loss of water, cement, and fins during placing and vibrating of the concrete. Adequate clean-out holes shall be provided at the bottom of each lift of forms. The size, number, and location of such clean-outs shall be subject to the approval of the Engineer.Concrete construction joints will not be permitted on locations other than those shown or specified, except as may be approved by the Engineer. When a second lift is placed on hardened concrete, special precaution shall be taken in the way of the number, location, and tightening of ties at the top of the old lift and bottom of the new to prevent any unsatisfactory effect whatsoever on the concrete. Pipe stubs and anchor bolts shall be set in the form where required. Unless otherwise shown, exterior corners in concrete members shall be provided with 19.0 mm (3/4 in.) chamfers. Re-entrant corners in concrete members shall not have fillets unless otherwise shown All vertical surfaces of concrete members shall be formed, except where placement of the concrete against the ground is called for on the drawings or explicitly authorized by the Engineer. Not less than 25mm (1 in.) of concrete shall be added to the thickness of the concrete member as shown where concrete is permitted to be placed against trimmed ground in lieu of forms. Such permission will be granted only for members of comparatively limited height and where the character of the ground is such that it can be trimmed to the required lines and will stand securely without caving or sloughing until the concrete has been placed.

5.4.9.3 Maintenance of Forms

Forms shall be maintained at all times in good condition, particularly as to size, shape, strength, rigidity, tightness, and smoothness of surface. Forms, when in place, shall conform with the established alignment and grades. Before concrete is placed, the forms shall be thoroughly cleaned. Forms may be reused if in good condition and if approved by the Engineer. Light sanding between uses will be required wherever necessary in the opinion of the Engineer to obtain uniform surface texture on all exposed concrete surfaces. Exposed concrete surfaces are defined as surfaces which are permanently exposed to view. In the case of forms for the inside wall surfaces of hydraulic structures, unused tie rod holes shall be covered with metal caps or shall be filled by other methods approved by the Engineer.

5.4.9.4 Removal of Forms

Directions of the Engineer concerning the removal of forms shall be strictly followed, and this work shall be done with care so as to avoid injury to the concrete, and this work shall be done with care so as to avoid injury to the concrete. No heavy loading on green concrete will be permitted. In the case of roof slabs and above-ground floor slabs, forms remain in place until test cylinders for the roof concrete attain a minimum compressive strength of 15.52 MPa (2,250 psi) provided that no forms shall be disturbed or removed under an individual panel or unit before the concrete in the adjacent panel or unit has attained a strength of 15.52 MPa (2,250 psi) and has been in place for a minimum of seven (7) days. The time required to establish said strength will be determined by the Engineer who will make several test cylinders for this purpose from concrete used in the first group of roof panels placed. If the time so determined is more than the seven-day minimum, then it shall be used as the minimum length of time. Forms for all vertical walls and columns shall remain in place at least three (3) days after the concrete has been placed. Forms for all parts of the work not specifically mentioned herein shall remain in place for periods of time as ordered by the Engineer.50 mm (2 in.) clearance between said items and any part of the concrete reinforcement. Securing such items in position by wiring or welding them to the reinforcement will not be permitted.

5.4.10 ORDER OF PLACING CONCRETE

The order of placing concrete in all parts of the work shall be subject to the approval of the Engineer. In order to minimize the effects of shrinkage, the concrete shall be placed in units as bounded by construction joints shown on the drawings. The placing of the units shall be done by placing alternate units in a manner such that each unit place shall have cured at least seven (7) days before the contiguous unit or units are placed, except that vertical walls shall be placed until wall footings have cured at least fourteen (14) days, and the corner sections of vertical walls shall not be placed until all the adjacent wall panels have cured at least fourteen (14) days.

The surface of the concrete shall be level whenever a run of concrete is stopped. To insure a level, straight joint on the exposed surface of walls, a wood strip at least 19.0mm (0.75in.) thick shall be tacked to the forms on these surfaces. The concrete shall be carried about 13.0mm (0,50in.) above the underside of the strip. About one hour after the concrete is placed, the strip shall be removed and any irregularities in the edge formed by the strip shall be leveled with s trowel and laitance shall be removed.

5.4.11 TAMPING AND VIBRATING

As concrete is placed in the forms or in excavations, it shall be thoroughly settled and compacted through-out the entire depth of the layer which is being consolidated, into a dense, homogeneous mass, filling all corners and angles, thoroughly embedding the reinforcement, eliminating rock pockets, and bringing only a slight excess of water to the exposed surface of concrete during placement.

Concrete in walls shall be internally vibrated and at the same time rammed, stirred, or worked with suitable appliances, tamping bars, shovels, or forked tools until it completely fills the forms or excavations and closes snugly against all surfaces. Subsequent layers of concrete shall not be placed until the layers previously placed have been worked thoroughly as specified. Except in special cases where their use is deemed impracticable by the Engineer, the contractor shall use internally vibrated, high speed power vibrators not less than 8000 rpm of an approved immersion type in sufficient numbers, with standby units as required, to accomplish the results herein specified within fifteen (15) minutes after concrete of the prescribed consistency is placed in the forms. The vibrating head shall be kept from contact with the surfaces of the forms. Care shall be taken not to vibrate concrete excessively or to work it in any manner that causes segregation of its face.

5.4.12 CARE AND REPAIR OF CONCRETE

The Contractor shall protect all concrete against injury or damage from excessive heat, lack of moisture, overstress, or any other cause until final acceptance by the Owner. Particular care shall be taken to prevent the drying of concrete and to avoid roughening or otherwise damaging the surface. Any concrete found to be damaged or which may have been originally defective, or which becomes defective at any time prior to the final acceptance of the concrete work, or which departs from the established line or grade, or which for any other reason does not conform with the Specifications, shall be satisfactorily repaired or removed and replaced with acceptable at the Contractors expense.

5.4.13 FINISH OF CONCRETE SURFACES

All finished or formed surfaces shall conform accurately with the shape, alignment, grades and sections as indicated on the plans or as prescribed by the Engineer. Surfaces shall be free from fins, bulges, ridges, offsets, honeycombing, or roughness of any kind, and shall present a finish, smooth, continuous hard surface.

Except as otherwise provided herein, unformed top surfaces of concrete shall be brought to uniform surfaces and worked suitable tools to a reasonably smooth wood flat finish. Excessive floating of surfaces while the concrete is plastic will not be permitted. All surfaces shall be placed monolithically with the base slab. Dusting of dry cement and sand on the concrete surface to absorb excess moisture will not be permitted. Floor slabs and exposed tops of walls and curbs shall be given a steel trowel finish. At the Contractors option, the above mentioned floor slabs may be finished with a power float after screenings. Subsequent to the aforementioned finish, all sloping surfaces of concrete pavements for diveways shall be lightly broomed to provide a skid-resistant surface.

5.4.14 TREATMENT OF SURFACE DEFECTS

As soon as forms are removed, all exposed surfaces shall be carefully examined at any irregularities shall be immediately rubbed or ground in a satisfactory manner in order to secure a smooth, uniform, and continuous surface. Plastering or coating of surfaces to be smooth will not be permitted, No repairs shall be made until after inspection by the Engineer, and then only in strict accordance with his directions. Concrete containing voids, holes, honeycombing, or similar depression defects shall be completely removed and replaced; provided that where required or approved by the Engineer, defects shall be repaired with gunite or with cement mortar placed by an approved compressed air mortar gun. In no case will extensive patching of honeycomb concrete be permitted. All repairs and replacements herein specified shall be promptly executed by the Contractor at his own expense.

Defective surfaces to be repaired as specified in Subsection (a) hereon, shall be cut back from true line a minimum depth of 13.0mm (1/2in.) over the entire area. Feathered edges shall be avoided. Where chipping or cutting tools are not required in order to deepen the area properly, the surface shall be prepared for bonding by the removal of all laitance or soft material, and not less than 0.79mm (1/32in.) depth of the surface film from all hard portions, by means of an efficient sandblast. After cutting and sandblasting, the surface shall be wetted sufficiently in advance of shooting with guide or with cement mortar so that while the repair material is being applied, the surfaces under repair will remain moist, but not so wet as to overcome the section upon which a good bond depends. The material used for repair purposes shall consist of mixture of one (1) bag of cement to 0.08 m3 (3 ft3) of sand. For exposed walls, the cement shall contain such a proportion of white Portland cement as is required to make the color or patch match the color of the surrounding concrete.

Holes left by the tie-rod cones shall be reamed with suitable toothed reamers so as to leave the surfaces of the holes clean and rough. These holes then shall be repaired in an approved manner with dry-packed mortar. Holes left by form-typing devices having a rectangular cross-section and other imperfections having a depth greater than their least surface dimension, shall not be reamed but shall be repaired in an approved manner with dry-packed mortar.

All repairs shall be built up and shaped in such a manner that the completed work will conform with the approved methods which will not disturb the bond, cause sagging or horizontal fractures. Surfaces of said repairs shall receive the same kind and amount of curing treatment as required for the concrete in the repaired section.

Prior to filling any structure with water, any cracks that may have developed shall be veed as shown on the drawings and filled with sealant.

5.4.15 PLACING REINFORCEMENTS

All reinforcement shall be placed in accordance with the plans furnished by the Engineer. In case of any doubt or ambiguity in placing of steel, the Contractor shall consult with the Engineer whose decision shall be final in such cases.

All loose rust or scale, all adhering materials, and all oil or other materials which tend to destroy bond between the concrete and the reinforcement shall be removed before placing the steel and before concreting begins.

Metal reinforcement shall be accurately placed and adequately secured by using annealed iron wire ties or suitable clips at intersections and shall be supported by concrete or metal supports, spacers, or metal hangers. The minimum clear distance between parallel bars shall be one and one-half (1-1/2) times the diameter for round bars, and twice the side dimension for square bars. In no case shall the clear distance between bars be less than 25mm (1in.) nor less than one and one-third (1-1/3) times the maximum size of the coarse aggregate. Where bars are used in two or more layers, the bars in the upper layers shall be placed directly above those in the lower layers at a clear distance of not less than 25mm (1in.).

Bends for stirrup and ties shall be made around a pin having a diameter not less than six (6) times the minimum thickness of the bar, except that for bars larger than 25mm (1in.), the pin shall not be less than eight (8) times the minimum thickness of the bar. All bars shall be bent cold.

Reinforcement steel shall not be straightened or relent in a manner that will injure the material. Bars with kinks or bends not shown on the drawings shall not be used. Heating of the reinforcement will be permitted only when approved by the Engineer.

5.4.16 OFFSETS AND SPLICES IN REINFORCEMENTS

In slabs, beams, and girders, splices or reinforcement at points of maximum stress shall be generally avoided, and may be allowed only upon written approval of splice detail of the Engineer. Splices shall provide sufficient lap to transfer stress between bars by bonding shear or by butt-welding to develop in tension at least one hundred twenty-five percent (125%) of the specified yield strength of the reinforcing bar. Splices in adjacent bars shall be generally staggered.

Where changes in the cross-section of a column occur, the longitudinal bars shall be offset in a region where lateral support is afforded. Where offset, the slope of the incline portion of the bar with the axis of the column shall not be more than one in six, in the case of tied columns, the ties shall be spaced not over 76mm (3in.) on center for a distance of 300mm (12in.) below the actual point of offset unless otherwise shown on the plans.

5.5 Masonry Works

This item shall cover all the perimeter and partition walls in accordance with the provided BOQ (Bill of Quantities) and plans. All perimeter and partition walls are specified to use 4 thick CHB (Concrete Hollow Blocks). Wire Meshes on existing perimeter fence shall be removed and replaced with 4 CHB. All wall footing requires 6 CHB making the footing tie beam in place. Reinforcements for the masonry walls and zocalo footing should correspond to the provided detailed drawings.

5.5.1 LayingAll masonry shall be laid plumb, true to line, with level and accurately spaced course, and with each course breaking joint with the course below. Bond shall be kept plumb throughout, corners shall be plumb and true. Units with greater than 12% absorption shall be wetted before laying. Work required to be built in with masonry, including anchors, wall plugs and accessories shall be built in as the erection progresses.Masonry units - each course shall be solidly bedded in Portland cement mortar. All units shall be damped when laid; units shall be showed into place not laid in full bed of un-furrowed mortar. All horizontal and verticals points shall be completely filled with mortar when aid in full bed of un-furrowed mortar. All horizontal and vertical points shall be bonded at corners and intersections. No cells shall be left open in face surfaces. All cells shall be filled up with mortar for exterior walls. Units terminating against beams or slab shall be wedged tied with mortar. Do not lay cracked, broken or defaced block.

Lintels shall be of concrete and shall be reinforced as shown on the drawings. Lintels shall have a minimum depth of 0.20 (8") and shall extend at least 0.20(8") on each side of opening.5.5.2 Workmanship and InstallationPlastering: Clean and evenly wet surfaces. Apply scratch coat with sufficient force to form good keys. Cross scratch coat upon attaining its initial set: Keep damped. Apply brown coat after scratch coat has set at least 24 hours after scratch coat application. Apply lightly scratch brown coat, Keep moist for 2 days, and allow drying out. Do not apply finish until brown coat has seasoned for 7 days. Just before applying coat, wet brown coat again. Float finish coat to true even surface, trowel in a manner that will force sand particles down into plaster with final trawling, leave varnished smooth, free from rough areas, trowel marks, checks, other blemishes. Keep finish coat moist for at least two (2) days, thereafter protect against rapid drying until properly, thoroughly cured.5.5.3 ScaffoldingsProvide all scaffoldings required for masonry work, including cleaning down after completion.

5.6 Plastering Works

Plastering Works requires minimum 12mm thickness with Class mixture of 1:3 for internal wall plastering and 1:3 for external wall plastering (Cement and Fine Sand Ratio). This covers both sides of the walls having smooth surface finish ready for painting.

5.7 Roof Framing Works

5.7.1RafterTop and Bottom Chord are specified as double angle of 38mm x 38mm x 6mm thickness. Web Members are specified as 12mm, plain round bars welded unto the top and bottom chord. Application of anti-corrosion paint is mandatory. Refer to drawings for details.

5.7.2PurlinsGa. 16 50mm x 100mm C channel purlins spaced at 0.60m 10mm deformed bars bracing support. Application of anti-corrosion paint is mandatory. Refer to drawings for details.

5.8 Roofing Works

Metal roofing sheets shall be of Rib Type design with effective coverage of 1070mm at any variant of pre-painted royal blue color. The Contractor shall verify the correct gauge of the metal sheet with caliper upon actual inspection of materials witnessed by ZCWD resident engineer. All bended accessories such as end flashings and ridge rolls shall be of Ga. 26 matching the specified color of the metal roof sheet. It shall all conform to the detailed drawings provided. All areas covered with metal roofing sheet must have 20mm thick Aluminized Polyethylene (P.E.) foam for insulation. The insulation must have metal wire cross meshing to avoid it from sagging.

5.9 Ceiling Works

5.9.1Ceiling FramesAll carrying channels, hangers and ceiling joist are specified to be 0.4mm x 13mm x 50mm Aluminum Metal Furring fastened and joined with blind rivets

5.9.2BoardsThe specified ceiling board is Fiber Cement type having 3.50mm bare thickness.

5.9.3MouldingsCeiling Mouldings shall have a size of 3 and 5 floor mouldings/baseboards.

5.10 Plumbing Works

Plumbing specifications shall conform to the provided detailed plans adhering to the National Plumbing Code of the Philippines.

5.10.1Plumbing Fixtures

Water Closets - One piece, jet flush water closets with complete fittings and accessories

Lavatory at Toilets with faucet Pedestal Type Lavatory (Oval Shaped) with complete fittings and accessories.

Kitchen Sink with faucet - Brushed Finish Stainless steel single bowl with dish drain

Soap Holder/ Toilet Paper Holder Brushed Finish Stainless steel

Bidet Spray Plastic Bidet spray with chrome coating and stainless flexible hose.

5.11 Sealed Septic Vault (3.50m x 1.20m x 2.45m)

The specifications of the septic vault shall conform to the provided detailed plans adhering to the standards of the National Plumbing Code of the Philippines. Waterproofing admixture shall be applied to concrete mixture and as well as bituminous membrane torched and applied to the inside surface of the septic vault.

5.12 Tile Works

5.12.1Concessionaires Area, Collectors Area, Supervisors Cubicle, Rest Area, Security Area, Operators RoomThese areas shall have 600mm x 600mm Granite Tiles with application of 25mm Floor topping before tile installation. Tiles are installed at 2.5mm spaces where application of tile grout is expected. Tile Grout shall conform to the color of the granite tiles

5.12.2Toilet Area (Floors)

Flooring for the toilet area shall be of 300mm x 300mm Ceramic tiles with application of 12mm floor topping before tile installation. Tile grout color shall conform to the color of ceramic tiles.

5.12.3Toilet Area (Walls)

Walls for the toilet area shall be of 300mm x 300mm Ceramic tiles with application of 12mm floor topping before tile installation. Tile grout color shall conform to the color of ceramic tiles.

5.12.4Faade Area (Security Area)

Faade Walls at Security area shall be of 400mm x 400mm Ceramic tiles (Stone Design) with application of 12mm topping before tile installation. Tile grout color shall conform to the color of ceramic tiles.

5.12.5Faade Area (Main Entrance Area)

Faade Walls at Main Entrance shall be of 300mm x 600mm Ceramic tiles (Stone Design) with application of 12mm topping before tile installation. Tile grout color shall conform to the color of ceramic tiles.

5.13 Supply and Installation of Jalousie Windows

All jalousie windows shall have 2 x 6 Window Jambs with 6mm thick bronze smoked glass blades with Aluminum frames. Actual sizes of the windows shall be verified at site for accuracy in measurement upon installation.

5.14 Supply and Installation of PVC Doors with complete Accessories (0.60m x 2.10m)

Prefabricated PVC doors are of 600mm x 2100mm size with bottom louver. PVC doors are mainly utilized for toilets.

5.15 Supply and Installation of Flush Type Door (0.80m x 2.10m)

Flushed Type Doors are to be fabricated except for its window jambs. Dimensions and measurement shall conform to the provided detailed plans. The preferred good lumber to be used for flushed type door is Mahogany.

5.16 Tubular Type Window Assembly (2.870m x 1.80m)

This window opening is aesthetically designed to remain open for the entire daily operation. The tubular design shall consist of 1.2mm x 50mm x 50mm B.I. (Black Iron) Square Hollow Section. 12mm dowel is welded unto the main frame to be anchored and welded to existing masonry walls. Measurement and exact dimensions for the tubular design are specified in the provided drawing details. These window types are primarily located at the faade of the building.

5.17 Iron Grille Type Window Assembly

This window type is located at the rear part of the building which allows natural light at the rear area of the building. It shall consist of 16mm plain round bar design with dimensions and measurements as per provided detailed drawing.

5.18 Supply and Installation of Manual Operated Roll-Up Door

Roll-Up Doors will use at the Glass Main Door Entrance and the tubular type windows. It shall conform to the following specifications:

5.18.1SlatsThe slats are formed in as cold-rolled process in continuous lengths of galvanized steel interlocked to form curtains.

5.18.2GaugeThe rolled-up door gauge is specified to be Ga. 24 or higher.

5.18.3EndlocksEnd locks are fitted to each end of alternate slats to achieve slat alignment and to serve as a wearing surface

5.18.4GalvanizingZinc Coated

5.19 Supply and Installation of Aluminum and Glass Works

5.19.1 1.20m x 1.25m Glass Sliding Window

The frames shall be of FD100 Analok Aluminum Frames with 12mm Bronze Glass. Dimensions and Measurements, to verify at site.

5.19.2 2.10m x 2.20m Glass Sliding Window

The frames shall be of FD100 Analok Aluminum Frames with 12mm Bronze Glass with push plate, pull bar and other accessories necessary. Dimensions and Measurements, to verify at site.

5.19.3Counter Security Glass (6.07m x 1.00m)

The counter security glass shall be using 6mm thick clear glass on SOB Moulding with 1 x 2 Anodized Rectangular section. Provision of speak hole and money hole are with specified positions and dimensions indicated in the provided detailed plan.

5.20 Electrical Works

The proposed project shall be undertaken in accordance with the established standards set by the Local Electric Cooperative, Zamboanga City Electric Cooperative (ZAMCELCO), and shall be done in conformity with Philippine Electrical Code (PEC).

Signing & sealing of plans shall be at the expense of the contractor to include the necessary and other incidental charges thereof.

5.20.1Safety

5.20.1.1Ensure that safety, security and housekeeping guidelines are issued and implemented by the Contractor.

5.20.1.2Regularly conducts walk-through inspection on the jobsites and immediately calls attention to unsafe practices and work conditions.

5.20.1.3Every personnel working in the project must equip with protective gear and gadgets for safety precautions.

5.20.2System & Energization

5.20.2.1Ensure the proper tests and all pertinent electrical system specifications of the Project. This includes the tests of (2) units of Air Condition units and (3) units of Industrial orbit fan. The supply for the same is part of Contractors scope.

5.20.2.2The Contractor will be responsible for energization to the electrical lines including initial energy deposit, to cover also the documentation requirements. The ZCWD personnel must be informed ahead of the scheduled energization works.

5.20.3Post Completion Phase

5.20.3.1Upon completion of project work, an inspection must be conducted together with the ZCWD and the Contractor.

5.20.3.2Immediate commission must be done after approval of inspection.

5.20.3.3A final inspection must be done by the ZCWD Inspection Committee.

5.20.4 Construction Phase

5.20.4.1 Distributing PolesThe distributing poles to be provided by the Agency shall be factory made 35 Footer and 45 Footer Round Centrifugal Pre-stressed Concrete or Galvanized Steel Poles with Minimum Break Load of 500 Kg.; 140mm and 268mm Top and Butt Diameter respectively, that shall conform to National Electrification Administration (NEA) and Local Power Co./Cooperatives Standards.

5.20.5 Pole Setting

5.20.5.1 The minimum depth for setting poles shall be as follows:

Length of Poles(feet)Setting in Soil(feet)Setting in Solid Rock(feet)

356.04.0

456.54.5

5.20.5.2 Setting in Soil specifications shall apply:-Where the poles are to be set in soil.-Where there is a layer of soil of more than two (2) feet in depth over solid rock.-Where the hole in solid rock is not substantially vertical or the diameter of the hole at the surface of the rock exceeds approximately twice the diameter of the pole at the same level.

5.20.5.3 "Setting in All Solid Rock" specifications shall apply where poles are to be set in solid rock and where the hole is substantially vertical, approximately uniform in diameter and large enough to permit the use of tamping bars the full length of the hole.

5.20.6 Grading of Line

When using high poles to clear obstacles such as buildings, foreign wire crossings, railroads, etc., there shall be no up strain on pin-type insulators in grading the line each way to lower poles.

5.20.7 Guys and AnchorsGuys shall be placed before the conductors are strung and shall be attached to the pole as shown in the Construction Drawings.

All anchors and rods shall be in line with the strain and shall be so installed that approximately six (6) inches of the rod remain out of the ground. In cultivated fields or other locations, as deemed necessary, the projection of the anchor rod above earth may be increased to a maximum of twelve (12) inches to prevent burial of the rod eye. The backfill of all anchor holes must be thoroughly tamped the full depth. When a cone anchor is used, the hole, after the anchor has been set in place, shall be backfilled with coarse crushed rock for two feet above the anchor, tamping during the filling with the remainder the hole to be backfilled and tamped with dirt.

5.20.8 LocknutA locknut shall be installed with each nut or other fastener on all bolts or threaded hardware such as insulator pins, upset bolts, double arming bolts, etc.

5.20.9 ConductorsAll conductors to be used for low voltage transmission must be made of copper. Conductors must be handled with care. Conductors shall not be trampled on nor run over by vehicles. Each reel shall be examined and the wire shall be inspected for cuts, kinks, or other injuries. Injured portions shall be cut out and the conductor spliced. The conductors shall be pulled over suitable rollers or stringing blocks properly mounted on pole or crossarm if necessary to prevent binding while stringing.

The neutral conductor should be maintained on one side of the pole (preferably the road side) for tangent construction and for angles not exceeding thirty degrees (30O). With pin-type insulators the conductors shall be tied in the top groove of the insulator on tangent poles and on the side of the insulator away from the strain at angles. Pin-type insulators shall be tight on the pins and on tangent construction the top groove must be in line with the conductor after tying in.

For neutral and secondary conductors on poles, insulated brackets (Material Item) may be substituted for the single and double upset bolts on angles of 0 to 5 in locations known to be a subject to considerable conductor vibration.

All conductors shall be cleaned thoroughly by wire bushing before splicing or the installation of connectors, clamps or tapping armor rods. A suitable inhibitor shall be used on aluminum conductors before splicing, before applying connectors, clamps or before installing tapping armor rods.

Equipment grounding conductors shall be UL 83 insulated stranded copper, except that sizes 6 mm (10 AWG) and smaller shall be solid copper. Insulation color shall be continuous green for all equipment grounding conductors, except that wire sizes 25 mm (4 AWG) and larger shall be permitted to be identified per PEC.

Bonding conductors shall be ASTM B8 bare stranded copper, except that sizes 6 mm (10 AWG) and smaller shall be ASTM B1 solid bare copper wire.

All electrical works including equipment grounding, bonding and color coding of conductors must conform to the provisions of the Philippine Electrical Code.

5.20.10 Splices and DeadendsConductors shall be spliced and dead ended as shown on the construction drawings. There shall be not more than one splice per conductor in any span and splicing sleeves shall not be located near conductor support. Maintain ten feet or more separation between the splice and the conductor support. No splices shall be located in Grade B crossing spans and preferably not in the adjacent spans. A high-grade Hydraulic Crimping tool must be used in the termination of conductors.

5.20.11Taps and JumpersJumpers and other leads connected to line conductors shall have sufficient slack to allow free movement of the conductors. Where slack is not shown on the construction drawings it will be provided by at least two bends in a vertical plane, or one in a horizontal plane, or the equivalent. In areas where aeolian vibration occurs, special measures to minimize the effects of jumper breaks shall be used as specified.

All leads on equipment: such as transformers, reclosers, etc., shall be a minimum of #6 copper conductivity.

5.20.12Hot-Line Clamps and ConnectorsConnectors and hot-line clamps suitable for the purpose shall be installed as shown on Guide Drawings. On all hot-line clamp installations, the clamp and jumper shall be so installed so that they are permanently bonded to the load side of the line, allowing the jumper to be de-energized when the clamp is disconnected. This applies in all cases, even where the line layout is such that the tap line is in actuality the main back to the power source.

Do not install hot-line clamps directly to ACSR conductors. Use tapping armor rods or tap saddles. Before installing hot line clamps to the surface of tapping armor rods thoroughly clean by wire bushing and apply a suitable inhibitor to the area of the tapping armor rod coming into contact with the hot-line clamp.

5.20.13Lighting Arrester Gap SettingsThe external gap electrodes of lightning arresters, combination arrester cutout units, and transformer-mounted arresters shall be adjusted to the manufacturers' recommended spacing. Care shall be taken, that the adjusted gap is not disturbed when the equipment is installed.

5.20.14Conductor TiesTies shall be in accordance with Construction Drawings. Hot-line ties shall not be used at Grade "B" crossings.

5.20.15Sagging of ConductorsConductors shall be sagged in accordance with the conductor manufactures recommendations. All conductors shall be sagged evenly. A certified etched glass thermometer shall determine the air temperature at the time and place of sagging.

The sag of all conductors after stringing shall be in accordance with the conductor manufacturers' recommendations, except that a maximum increase of three inches of the specified sag in any span will be acceptable. However, under no circumstances will a decrease in the specified sag be allowed.

5.20.16Secondaries and Service DropsSecondary conductors may be bare or covered wires or multi-conductor service cable. The conductors shall be sagged in accordance with manufacturers' recommendations.

Conductors for secondary under build on primary lines will normally be bare except in those instances where prevailing conditions may limit primary span lengths to the extent that covered wires or service cables may be used. Service drops shall be covered wire or service cable.

Secondaries and service drops shall be so installed as not to obstruct climbing space. There shall not be more than one splice per conductor in any span, and splicing sleeves shall not be located near the conductor support. Maintain ten feet or more separation between the splice and the conductor support. Where the same covered conductors or service cables are to be used for the secondary and service drop, they may be installed in one continuous run.

Retapping to the new 3-Phase power supply of the existing single phase and all other existing electrical connections shall be done prior for testing and commissioning of the project.All convenience outlet must be of 3 Gang (with ground) universal type with ground and child-lock protection.AFCI (Arc Fault Circuit Interrupter) for Main and Branches Circuit Breaker are required.For circuits located in moist conditions, the same must be of GFCI-type (Ground Fault Circuit Interrupter)

5.20.17GroundsElectrical systems that are grounded shall be connected to earth in a manner that will limit the voltage imposed by lighting, line surges or unintentional contact with higher voltage lines and that will stabilize the voltage to earth during normal operation.

Non-current carrying conductive materials enclosing electrical conductors or equipment, or forming parts of such equipment, shall be connected to earth so as to limit the voltage to ground on these materials.

Bonding of electrical equipment for non-current carrying conductive materials, equipment or forming parts shall be connected together in a manner that establishes an effective ground-fault current path.

Effective ground-fault current path shall be installed in a manner that creates a permanent, low impedance circuit facilitating the operation of the overcurrent device for high impedance grounded system capable of carrying the maximum ground-fault current imposed on it.

Ground rods shall be driven in undisturbed earth in accordance with the Construction Drawings. Where aluminum ground wire is used, it must be terminated above ground at a galvanized ground rod or spliced by a compression connector to a copper or steel ground wire - extension to the ground rod, of which the top of the ground rod shall be 12 inches or more below the surface of the earth. The ground wire shall be attached to the rod with a clamp and secured to the pole with staples. The staples on the ground wire shall be spaced two feet apart except for a distance of eight feet above the ground rod and eight feet down from the top of the pole where they shall be six inches apart.All equipment shall have at least two connections from the frame, case or tank to the multi-grounded neutral conductor.

The equipment: ground, neutral wires, and lightning-protective equipment shall be interconnected and attached to a common ground wire.

5.20.18CrossarmsAll crossarms to be used shall be made of Galvanized Steel material.

5.20.19Electrical EquipmentDistribution Transformers

The transformers shall be oil-immersed, self-cooled, double bushing pole mounted-type with the following specifications:No. of units: 3 KVA Rating : 25 KVA/unitPrimary Voltage, KV : 7620V/13200V Secondary Voltage : 120V/240VTemperature Rise, Degree Centigrade : 65CFrequency, HZ : 60Percentage Tolerance : +/- 10%B.I.L.: 95-115 KVMin. Insulation Resistance, Mega ohm: 2Notes:1. The units shall conform to ZAMCELCOs maximum allowable copper and core losses.2. Expenses for the calibration/testing of meter and transformers and its protective devices shall be borne by the Contractor.

The transformers shall be oil-immersed, self-cooled, double bushing pole mounted-type with the following specifications:Each transformer shall be furnished with 2-no-load manual winding taps at 2 1/2% above and below normal voltage. It shall have grounding pads located diagonally on opposite comers of the tank base, mounting lugs of transformer pole mounting bracket cluster. The core and winding of the transformer shall be designed and constructed to give the minimum core loss and shall be designed, fabricated and tested in strict compliance to an applicable standards prior to delivery, installation and acceptance Required fuse-cut outs and arresters assemblies shall be supplied by the Contractor.

5.20.20Distribution Fuse-Cut-OutThree (3) units of open-type distribution fuse cutouts complete with NEMA type K or T fuse link as defined in the latest ANSI C 37.43 standard shall be provided for each Pump Station. Cutouts shall be suitable for pole cross-arm mounting rated 15 KV with fuse link of the required rating.

5.20.21Distribution Lighting ArresterDistribution Lighting Arrester shall be provided for each distribution transformer for equipment surge voltage protection. Each unit shall be of the valve type rated 10 KV suitable for transformer close coupling.

5.20.22Kilowatt-hour Meter and AccessoriesKilowatt hour/Demand meter shall be of Self-contained type 3-phase, 3-wire, of the socket type, 120-480 V to be installed with complete accessories and grounding system employing a minimum of 5.5mm2 THW Copper ground wires. The unit shall be complete with a meter socket and weatherproof steel enclosure. The stator unit shall be calibrated, installed and sealed by the Local Power Cooperative The unit should be GE-KV 2C Electronic Meter, FM 12S, 3 phase, 4 wires, 110v480v, class 200 with Test Block 7 terminals and metering box.

5.20.23Current TransformerThe Current Transformers to be provided must outdoor type with secondary terminal sealing provision and a basic insulation level of 600 Volts and CTR of 200/5 ratio, which must be brand new and approved by the Local Electric Cooperative, enclosed in a Current Transformer Box.

5.20.24SafetyEnsure that safety, security and housekeeping guidelines are issued and implemented by the Contractor.

Regularly conduct walk-through inspection on the jobsites and immediately call attention to unsafe practices and work conditions.

Every personnel working in the project must equip with protective gear and gadgets for safety precautions.

5.20.25System Testing and EnergizationEnsure the proper tests and all pertinent system specifications of the Project.

The Contractor will be responsible for energization to the electrical lines including initial energy deposit, to cover also the documentation requirements. The ZCWD personnel must be justified during energization.

5.20.26Post-Completion PhaseUpon completion of project work, an inspection must be conducted to the Project together with the ZCWD and the Contractor.

Immediate commission must be doane after approval of inspection.

Ensure that necessary clearances are obtained from government agencies.

A final inspection must be done by the ZCWD Inspection Committee.

Prepare necessary documents needed and recommend ZCWD for the release of final payment and retention.

5.20.27TurnoverRecommend and validate documents needed by the ZCWD for the issuance of a Certificate of Acceptance and Occupancy.

Submit the Final Project Evaluation Report to the ZCWD.

5.20.28Minimum Personnel RequirementProject Engineer Stand as the team leader, in charge of the project Must be a licensed Electrical Engineer and at least of five years of experience in the field of work. Must be also present at all times in the duration of the project.

Foreman Electrician Acts as the lead man Reports to the project engineer Eligible and responsible to handle the group at work Must be at least Registered Master Electrician Prepare daily activity reports

Line Man Reports to the foreman Responsible in staking of primary lines, splicing of tapping points, connection and all other electrical works in the construction Must be at least TESDA graduate or graduate of any technical schools Well experience of at least five years in the field of work

Laborer Reports to the foreman Acts also as Ground Man Responsible of bore holing and setting the post on the ground Can perform any task assigned to him by the foreman

5.20.29Proposal Evaluation

Bids will be evaluated base on the lowest complying responsive bid following the tenets of RA 9184.

5.2 Provision of Tubular Type Shed at Genset Area

The generator set area shall be covered with a tubular framed roofing system mainly sloped at the rear edge of the perimeter wall. The composition of the genset cover shall be as follows: (See Section Detail A at Sheet No. 5)

5.21.1100mm x 50mm B.I. Tubular Section5.21.23mm Fiber Cement Board5.21.320mm thick Aluminized Polyethylene (P.E.) foam5.21.4Ga. 26 G.I. Rib Type Roofing

5.3 Main Entrance Canopy with Tubular Trellis/Rails

The trellis design of the main entrance canopy aesthetically designed with 100mm x 50mm B.I. Tubular Sections, covered with 6mm thick. x 1.20m x 5.0m Polycarbonate Roofing (with Polycarbonate H-Strips for joints).

5.4 Supply and Delivery of Office Chairs

5.23.1Concessionaires Chair (5-Seater - Gang Chair)

5.23.1.1Seat/ Seat Side/ Arms & LegsStainless Steel (SS201) with Brushed Finish SystemNote: Gang Chair Legs requires 3 pairs, having 1 pair at the center support.

5.23.1.2Beam Support80mm x 40mm Rectangular Steel Tube with Anti-Rust Finish System

5.23.1.3Overall Dimensions (5-Seater, Gang Chair)(L X D X H) - 2690mm x 670mm x 790mm

5.23.2Tellers, Security, Operators, Supervisors Chair360 Swivel Chair, Mesh Back Support with Fixed Arm Rest, Pneumatic Height Adjustment Seat, Chrome Plate Frames (1 Seater)

5.23.3Visitors Chair/ Conference Chair50cm (H) x 48cm (w) x 50cm (L), Stainless Steel Frame, Leather Surface

5.5 Carpentry Works (Drawers, Partition, Hanging Shelves, Long Table)

All counter drawers, partitions, hanging shelves and long table are fabricated. Material specifications and detailing shall be in accordance with the detailed plans provided.

5.24.1MaterialsQuality of lumber: Lumber shall be the approved species. Lumber shall be of the respective kinds for the various parts of the work, well-seasoned, thoroughly dry, and free from large, loose or unsound knots saps, shakes, and other imperfections impairing the strength, durability or appearance. All finishing lumber to be used shall be completely dry and shall not contain more than 14% moisture. All flooring, tongue and groove shall be well seasoned or kiln dried.5.24.2Treatment of Lumber Surface in contact with masonry and concrete shall be coated with creosote or its equivalent.

5.24.3DoorsashesAll door sashes shall be well-seasoned, flush type, semi-hollow core and solid core. Tanquile plywood veneers on both sides. Exterior doors shall be of kiln dried Yakal panel boards.5.24.4Kind of LumberAll unexposed lumber for framings shall be of yakal wood. All windows and doorjambs shall be of yakal wood.5.24.5WorkmanshipExecute rough carpentry in best, substantial, and workmen like manner. Erect framing true to line and dimensions, squared, aligned, plumbed and well spliced, nailed and adequately braced, properly fitted using mortise and tenon joint.Millwork-accurately milled to details, clean cut moldings, profiles, lines, scrape, sand smooth, mortise and tenon splice joints, block, screw, bolt together as approved in a manner to allow free play of panels, avoid swelling, shrinkage, ensure work remaining in place without warping, splitting opening of joints. Do not install millwork and case until concrete and masonry have been cured and will not release moisture harmful to wood work.Secure work to grounds; otherwise fasten in position to hold correct surface lines and levels. Make finished work flat, plumb, true.

5.6 Provision of Granite Counter (Tellers Counter)

Edges of the Granite slab shall be Full Bullnose or Half Bullnose. The granite slab must have smooth finish using polishing abrasives. The preferred color for granite is black.

5.7 Supply and Delivery Fire Proof Metal Filing Cabinet (4 Drawer)

Four-Drawer cabinet, 3 section slider, central locking, 2 sets of keys, provision of file hanger bar, heavy duty smooth and quiet drawer suspension mechanism, anti-tilt and suitable for legal, A4 or letter file sizes.

5.8 Construction of Steel Fence

The steel fences are primarily located near the security area which is to be fabricated with 50mm x 50mm x 4mm thick G.I. square tube section (Framings) and 38mm x 38mm x 6mm thick with complete barrel bolt assembly at the bottom and mid area of the opening fence. It shall comply with the discretion of ZCWD resident engineer.

5.9 Supply and Installation of Metal Build-Up Signage at Faade

Metal Built-Up Signage is of brass material with urethane clear paint and 3mm diameter spike stand on each letter. The 350mm ZCWD logo, (brass material with urethane clear paint) shall have vinyl graphic sticker.

5.10 Carpentry Works (Drawers, Partition, Hanging Shelves, Long Table)The cubicle partition at the Supervisors area shall comprise of 4mm thick of 50mm x 75mm Metal Stud as wall joists at 600mm clear spacing from the face of the stud. The double wall covering will be 10mm Gypsum Board riveted/screwed unto the metal stud frames.

5.11 Fabrication of Temporary Parking Barricades

Parking barricades will be fabricated with specified materials at the provided detailed drawings. The stanchion frames shall be 38mm G.I. pipe. The 4.50mm BI steel matting shall be framed with 2-25mm x 12mm flat bar that will be welded unto the main frames. The parking barricades shall require 6 units of 2.16m x 1.35m enough to cover the front ramp of the property.

5.12 Relocation of Discharge Pipe

The existing borehole system shall remain at its original position. Its existing discharge pipeline that is located at near the proposed genset area will be relocated by closing it permanently. The new discharge pipeline will be tapped from the borehole system with appropriate gate valves and catch basin. The new discharge pipe line (8 PVC pipe) goes to existing drainage. (See provided detailed plan.)

5.13 Painting Works

5.13.1 Concrete Surfaces

For concrete surfaces, the initial application of concrete neutralizer is set to purposely clean and even the surface before applying paint. Solvent-based Acrylic Primer is then applied to the concrete surface. Body filler and Solvent based acrylic cast is then applied on cracks and uneven surfaces which will be then undergo abrasive polishing (sand paper). After the surface has been smoothen and free from dusts specks, solvent based acrylic primer is reapplied before the solvent based Acrylic paint top coat is applied as final finish.

5.13.2Gypsum Board/ Fiber Cement BoardSimilar procedure to that of concrete surfaces is being applied to these types of surfaces except for the application of concrete neutralizer. Cleaning of the surface will be the initial procedure before

5.13.3Metal Surfaces

Formations of rusts are removed by using steel brush. Red oxide primer is being applied rust proofing the all metal surface. Final finish shall be the Flat wall enamel paint as top coat.

5.13.4Wooden Surface

Clean any wooden surface, making it free form dust and any other agent that makes the wooden surface unsmooth. Apply Enamel Primer to the surface by either roller or brush. Putty filler /Body Filler are then applied to bulges caused by rivets, screws, finishing nails and even joints. After which, abrasive polishing using sand paper is then treated making the surface even. Quick Drying Enamel (Semi-Gloss) will serve as the final coat of the wooden surface.

VI. Time Frame/ Project Duration:(129) One Hundred Twenty Nine Calendar Days)

VII. Manpower Schedule Technical Personnel RequiredDescriptionNo.

Construction Foreman/Electrical Engineer1

Steelman3

Mason3

Carpenter3

Plumber1

Electrician2

Painter1

Welder3

Laborer15

PREPARED BY: REVIEWED & SUBMITTED BY:` CAROLYN M. TORINOSenior Engineer (C.E.)EDITO M. BAUSTISTA, JR.Officer in-ChargeDesign DivisionFELIX FEDERICO N. MENDOZASenior Engineer (E.E.)

APPOVED BY:RECOMMENDING PROJECT IMPLEMENTATION:

MARLI P. ACOSTA-DEFIESTAARNULFO A. ALFONSOOfficer in-ChargeAssistant General ManagerEngineering & Construction Departmentfor Technical Services

Approved for Project Implementation

LEONARDO REY D. VASQUEZGeneral Manager

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