DIVISION 2 - SITEWORK · 2018. 8. 8. · b. Provide self-contained stainless steel slide gates at...

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DIVISION 2 - SITEWORK

Erosion and Sediment Control 02010 Bypass Pumping 02150 Demolition 02220 Site Clearing 02230 Shoring, Sheeting, and Bracing 02251 Excavation - Earth and Rock 02316 Backfilling 02317 Micropiles 02400 Laying and Jointing Buried Pipelines 02500 Reinforced Concrete Sewer Pipe 02502 Buried Ductile-Iron Pipe and Fittings 02505 Buried PVC and CPVC Sewer and Pressure Pipe 02507 Stainless Steel Pipe and Fittings 02509 Disinfection 02512 New Roadway Construction and Site Restoration 02513 Hydrants 02514 Leakage Tests 02516 Precast Concrete Manholes 02606 Television Inspection 02651 Cleaning at Treatment Plants 02761 Chain Link Fence and Gates 02820 Landscaping Work 02900

DIVISION 3 - CONCRETE

Concrete Formwork 03100 Concrete Accessories 03150 Concrete Reinforcement 03200 Cast-in-Place Concrete 03310 Grout 03600

DIVISION 4 - MASONRY

Masonry 04300

DIVISION 5 - METALS

Galvanizing 05085 Structural Steel 05120 Cold Formed Metal Framing 05400 Metal Fabrications 05500 Metal Grated Stairs 05510

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Metal Pan Stairs 05515 Handrails and Railings 05520 Metal Floor Grating and Plate 05531 Expansion Joint Assemblies 05805

DIVISION 6 - WOOD AND PLASTICS

Rough Carpentry 06100 Glass-Fiber-Reinforced Plastic Gratings 06611

DIVISION 7 - THERMAL AND MOISTURE PROTECTION

Spray on Insulation 07210 Metal Wall Panels 07410 Exposed Metal Wall Panels 07420 Membrane Roofing 07530 Sheet Metal Flashing and Trim 07620 Prefabricated Roof Specialties 07710 Firestopping 07840 Joint Sealants 07900

DIVISION 8 - DOORS AND WINDOWS

Stainless Steel Doors and Frames 08110 Floor Doors 08310 Overhead Coiling Doors 08331 Aluminum Windows 08520 Door Hardware 08710 Glass and Glazing 08800 Translucent Insulated Skylights 08950

DIVISION 9 - FINISHES

Gypsum Board Systems 09260 Acoustical Ceilings 09511 Resinous Flooring 09675 Painting 09900 Protective Lining for Concrete Walls 09910

DIVISION 10 - SPECIALTIES

Signage 10140

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Metal Louvers 10210 Aluminum Screen Wall 10240 Fire Extinguishers 10522 Toilet Accessories 10810

Volume 2 of 2 -

DIVISION 11 - EQUIPMENT

Fall Protection Systems 11010 Loading Dock Equipment 11165 Stainless Steel Slide Gates 11287 Stop Logs and Stop Gates 11288 Non-Clog Vortex Pump 11306 Vortex Grit Removal System 11319 Grit Separation and Clarifying Equipment 11321 Front Rake Arm Mechanical Screening Equipment 11329 Chain and Rake Mechanical Screening Equipment 11331 Odor Control Equipment 11395 Teledyne Isco 5800 Refrigerated Sampler 11400

DIVISION 12 - FURNISHINGS

Horizontal Louver Blinds 12491 Furniture and Accessories 12500

DIVISION 13 - SPECIAL CONSTRUCTION

Lightning Protection System 13100 Control Panels 13300 Field Mounted Instrumentation 13400 Phosphate Analyzer 13440 Programmable Logic Controller Systems 13451 Process Control System Computer and Network Hardware 13453 Refrigerated Sampler 13500 Signaling and Fire Alarm 13851

DIVISION 14 - CONVEYING SYSTEMS

Jib Cranes 14650

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DIVISION 15 - MECHANICAL

Supports and Anchors 15060 Vibration Isolation 15072 Mechanical Identification 15075 Mechanical Insulation 15080 Ductile Iron Pipe and Fittings 15106 Steel Pipe and Fittings 15107 Miscellaneous Pipe and Fittings 15108 Erecting and Jointing Interior and Exposed Piping 15109 Valves 15110 Gauges-Pressure and Vacuum 15124 Hydronic Piping Valves and Specialties 15183 Refrigeration Piping and Specialties 15184 Natural Gas Systems 15190 Plumbing Equipment 15400 Plumbing Piping and Valves 15405 Plumbing Specialties 15406 Plumbing Fixtures and Trim 15410 Sump Pumps 15446 Boilers and Boiler Room Equipment 15510 Breechings, Chimneys and Stacks 15550 Condensing Units 15670 Air Handling Units 15720 Packaged Air Conditioning Units 15730 Heating, Ventilating and Air Conditioning Pumps 15740 Air Coils 15761 Terminal Heat Transfer Units 15765 Ductwork 15810 Ductwork Accessories 15820 Fans 15830 Air Outlets and Inlets 15850 HVAC Controls 15900 Air Monitoring 15946 Testing, Adjusting, and Balancing 15950

DIVISION 16 - ELECTRICAL

Temporary Electrical System 16020 Basic Electrical Materials and Methods 16050 Electrical Requirements for Shop-Assembled Equipment 16055 Grounding 16060 Supporting Devises 16071 Electrical Identification 16075 Electrical Testing Requirements 16080 Short Circuit and Coordination Study 16085

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Wires and Cables – 600 Volts and Below 16121 Medium Voltage Cables 16122 Electrical Raceway Systems 16130 Underground Electrical Distribution System 16132 Wiring Devices 16140 Electric Motors 16220 Uninterruptible Power Supply Systems 16264 Adjustable Frequency Drives 16266 Pad-Mounted Transformers 16273 Electrical Monitoring System 16291 Disconnect Switches 16411 Panelboards 16443 Motor Control Centers 16445 General Purpose Dry Type Transformers 16460 Control Components and Devices 16491 Lighting 16500 Data and Communication System 16745 Digital Video System 16752 Fiber Optic Cable 16760 Fiber Optic Patch Panels 16761

DIVISION 17 – INSTRUMENTATION AND CONTROL

System Integrator 17010 Modifications to Existing Plant PCS System 17020 Process Control System Factory Acceptance Testing 17143 Process Control System Commissioning 17166 Process Control System Training 17176 General PCS Requirements 17200 Process Control System Input/Output List 17299 Process Monitoring and Control Requirements 17400

APPENDIX

Geotechnical Engineering Study

7. Drawings

Screenings and Grit Facility 11010-1 01/2018

SECTION 11010

FALL PROTECTION SYSTEMS

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Davit crane with fall arrester type fall protection

B. Related Work Specified in Other Sections Includes, But is Not Limited to, the Following:

1. Section 03310 - Cast In Place Concrete

1.2 SUBMITTALS

A. Shop Drawings and Engineering Certification 1. Submit shop drawings showing complete layout and configuration of

complete window cleaning/suspended maintenance system, including all components and accessories. Clearly indicate design and fabrication details, hardware, and installation details.

2. Shop drawings to include installation and rigging instructions and all

necessary Restrictive and Non-Restrictive Working Usage Notes and General Safety Notes.

3. Shop drawings to be reviewed by a professional engineer, and upon request,

complete with calculations and/or test reports.

1.3 OSHA REQUIREMENTS

A. Comply with OSHA regulations: 1910, Subpart D (Walking and Working Surfaces).

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. General: Acceptable manufacturers are listed below. Other manufacturers of equivalent products may be submitted.

1. INNOVA Public Utility Products Inc.


2.2 MATERIALS

A. Provide the following: 1. One (1): XTIRPA Extendable Davit Arm (30” – 48”), IN-2237. The davit

arm shall be extendable with locking pinholes at 30”, 36” and 38” and shall be equipped with a 5,000 lb anchor point.

2. One (1): XTIRPA 4” Mast for Davit Arm 42” height, IN-2240. Mast unit shall be designed for use with Extendable Davit Arm to ensure full compatibility.

3. One (1): XTIRPA Mounting Bracket, IN-2374. The Mounting Bracket shall

be specifically designed for use with the 39’ self-retracting lifeline and shall comply with ANSI/ASSE Z359.1-2007CSA Standard Z259.2.2-98CE.

4. One (1): XTIRPA 39’ Self-retracting lifeline with retrieval, IN-2366. The

self-retracting lifeline shall have rugged aluminum housing and shall comply with ANSI/ASSE Z359.1-2007CSA Standard Z259.2.2-98CE.

5. One (1): XTIRPA Removable Winch Adapter, A2237-06. The removable

which adapter shall be specifically designed to be compatible with extendable davit arm to allow a winch handle to be mounted at the base of the arm.

6. Eight (8): XTIRPA 3” Flush Floor Adapter Base 316 SS, IN-2325. Flush

floor adapter base shall be specifically designed for use with the Mast for Davit Arm and designed to attach to concrete.

PART 3 EXECUTION

3.1 INSTALLATION

A. General: Install equipment in accordance with the manufacturer's recommendations and approved shop drawings and as specified in Division 1.

B. Install equipment in accordance with approved shop drawings and manufacturer’s

recommendations.

C. Coordinate installation with work of related trades.

D. Install all work true, level, tightly fitted and flush with adjacent surfaces as required.


3.2 FIELD QUALITY CONTROL

A. Manufacturer's Field Services: Furnish the services of a qualified representative of the manufacturer to provide instruction on proper installation of the equipment, inspect the completed installation, make any necessary adjustments, participate in the field testing of the equipment and place the equipment in trouble-free operation, as specified in Division 1. Furnish hours of instruction per Section 01820-Training.

END OF SECTION


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SECTION 11165

LOADING DOCK EQUIPMENT

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Dock rubber bumpers 1.2 REFERENCES

A. Codes and standards referred to in this Section are:

1. ASTM D 624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers; 2000.

2. ASTM D 2632 - Standard Test Method for Rubber Property--Resilience by Vertical Rebound; 2001.

1.3 SUBMITTALS

A. General: Provide all submittals, including the following as specified in Division 1.

B. Product Data: For each type of product indicated. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for loading dock equipment.

C. Shop Drawings: For loading dock equipment. Include plans, elevations, sections,

details, and attachments to other work.

1.4 WARRANTY

A. Warranty for Dock Equipment: Manufacturer's standard form in which manufacturer agrees to repair or replace dock-equipment components that fail in materials or workmanship within specified warranty period.

B. Failures include, but are not limited to, the following:

1. Structural failures including cracked or broken structural support members, loadbearing welds, and front and rear hinges.

2. Warranty Period shall be a minimum of one (1) year from date of Substantial

Completion.


PART 2 PRODUCTS

2.1 MATERIALS

A. Steel Plates, Shapes, and Bars: ASTM 36/A 36M. 2.2 DOCK BUMPERS:

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Chalfant Dock Equipment. 2. Durable Corporation. 3. Rite-Hite Corporation

B. Laminated-Tread Dock Bumper: Fabricated from multiple, uniformly thick plies cut

from fabric-reinforced rubber tires. Laminate plies under pressure of at least 1500 lb. on not less than two 3/4-inch- (19- mm-) diameter, steel supporting rods that are welded at one end to 1/4-inch- (6-mm-) thick, structural-steel end angle and secured with a nut and angle at the other end. Fabricate angles with predrilled anchor holes and sized to provide not less than 1 inch (25 mm) of tread plies extending beyond the face of closure angles.

1. Thickness: 6 inches (152 mm). 2. Horizontal Style: 36 inches (250 mm) high by 18 inches (460 mm) long

minimum.

C. Anchorage Devices: Hot-dip galvanized-steel anchor bolts, nuts, washers, bolts, sleeves, cast-in-place plates, and other anchorage devices as required to fasten bumpers securely in place and to suit installation type indicated

PART 3 EXECUTION

3.1 INSTALLATION

A. General: Install dock bumpers in accordance with the manufacturer's recommendations and approved shop drawings and as specified in Division 1.

B. Attach dock bumpers to face of loading dock in a manner that complies with

requirements indicated for spacing, arrangement, and position relative to top of platform and anchorage.

1. Welded Attachment: Plug-weld anchor holes in contact with steel inserts and

fillet weld at other locations.

END OF SECTION


SECTION 11287

STAINLESS STEEL SLIDE GATES

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Requirements for furnishing and installing new stainless steel slide gates and operators. Requirements for furnishing and installed new operators.

1. Provide the following stainless steel slide gates. Design gates to be mounted

as shown in the details on the Plans.

a. Provide self-contained stainless steel slide gates to replace the existing sluice gates at Grit Chamber No. 1.

b. Provide self-contained stainless steel slide gates at the Diversion Chamber.

c. Provide non-self-contained stainless steel slide gates to replace the

existing sluice gates at the By-Pass and Overflow Chamber.

d. Provide self-contained embedded stainless steel slide gates for the Screenings and Grit Removal Facility.

2. Provide gate operators complete with all appurtenances necessary for the

operator to perform its intended function. Such appurtenances include, but are not limited to mounting hardware, operating nuts, and other such items necessary for the operator to perform its intended function.

3. For each gate provide the type of operator specified for the gate in the Gate

Schedule. Where indicated, provide gate operators with electric actuators and system master control station with loop control configuration.

B. Related Work Specified in Other Sections Includes, But is Not Limited to, the

Following:

1. Section 09900 - Painting 2. Section 16220 - Electric Motors


1.2 REFERENCES


1. ASME B1.20.1 - Screw Threads - Pipe Threads, General Purpose (Inch)

2. ASTM A 27/A27M - Specification for Steel Castings, Carbon, for

General Application

3. ASTM A240 - Stainless Steel Plate, Sheet and Strip

4. ASTM A 276 - Specification for Stainless and Heat Resisting Steel Bars and Shapes

5. ASTM A 380 - Standard Practice for Cleaning, Descaling, and

Passivation of Stainless Steel Parts, Equipment, and Systems

6. ASTM A 582 - Free Machining Stainless and Heat Resisting

Steel Bars, Hot Rolled or Cold Finished User

7. ASTM B 148 - Specification for Aluminum Bronze Sand Castings

8. AWWA C561 - Fabricated Stainless Steel Slide Gates

9. AWWA C542 - Electric Motor Actuators for Valves and Slide

Gates 1.3 SYSTEM DESCRIPTION

A. Design Requirements:

1. Provide slide gates of stainless steel type 316 with quantity of gates, guides, size, location and type as shown or specified. Provide all slide gates of the same type from one manufacturer.

2. Design the slide gate anchorage system for attachment to new concrete wall

for the gates at the Diversion Chamber and Screenings and Grit Removal Facility. Design the slide gate anchorage system for attachment to existing concrete walls for Grit Chamber No. 1 and By-Pass and Overflow Chamber.

3. Design slide gates to limit deflection under maximum loading to 1/360 of the span or 1/16-inch, whichever is less.


4. Design slide gates for seating or unseating pressures as specified, measured to the center of the gate.

1.4 SUBMITTALS

A. General: Provide all submittals, including the following, as specified in Division 1.

B. Shop Drawings: Submit shop drawings, including arrangement and erection

drawings of the gates, operators and control equipment; structural design data, if requested; schematic control diagrams, electrical connection diagrams, and complete description of the control system; and operating characteristics.

C. Quality Control:

1. Submit manufacturer's certified performance and material specifications.

2. Submit an affidavit of compliance with all applicable provisions of AWWA

C561.

3. Submit complete calculations for each size of motor operator indicating the force required to operate the gate, the operator force provided, full load and locked rotor current, and horsepower.

D. Operation and Maintenance Manuals: Submit operation and maintenance manuals

for the slide gates and gate operators.

1.5 DELIVERY, STORAGE AND HANDLING

A. Deliver, store and handle all products and materials as specified in Division 1. 1.6 SPARE PARTS

A. Provide the following spare parts.

1. For gate assemblies:

a. One (1) lift nut of each type.

2. For electric motor operators, provide 4 per size of motor operator supplied:

a. LDM - Local Display Module

b. RDM - Remote Display Module

c. MCM - Motor Control Module - Contactor / Transformer


d. Main Processor Declutch Lever

e. Digital Control Card (Controlling Communication Card)

f. Circuit Breaker

g. APD - Absolute Position Detector

h. Torque Board

i. Terminal Board

j. Operator Handle

k. Torque Spring Cover

B. Provide the following special tools. 1. For electric motor operators,

a. Torque calibration tool for each type of actuator.

C. Deliver, store, and handle all products and materials as specified in Division 1.

D. Provide Spare Parts wrapped or boxed, indexed, and tagged with complete

information for use and reordering.

E. Spare Parts shall be in original factory packaging. Spare parts are to be clearly marked with the Mainsaver CMMS Part Number before being delivered to the Wastewater Warehouse.

F. Package spare parts in a manner suitable for long term storage that adequately protects against corrosion, humidity, and temperature

PART 2 PRODUCTS

2.1 MANUFACTURER

A. Acceptable manufacturers are listed below. Other manufacturers of equivalent products may be submitted.

1. Stainless Steel Slide Gates

a. RW Gate Company b. Washington Aluminum Company (WACO) c. Whipps, Inc.


2. Electric Motor Operator – Nonmodulating and Modulating:

a. E-I-M Company, Tec2 Actuators 2.2 MATERIALS

A. General: Fabricate the various equipment components of materials that meet the following requirements.

B. Slide Gates: Slide Gate assembly shall be constructed of stainless steel type 316.

All welded components shall be 316L stainless steel.

C. Slide Gate Operators

1. Operator housings:

a. Cast Iron

b. Ductile iron

c. Cast steel

ASTM A 126, Class B

ASTM A 48, Class 30 or 35

ASTM A 395

ASTM A 536, Grade 65-45-12

ASTM A 27/A29M 2. Operator worms, steel ASTM A 29/A29M Grade

Designation 8620 3. Operator gears, steel

(spur & helical) ASTM A 572/A572M

4. Worm gears, bronze ASTM B 148, Alloy C95400 or C95500 ASTM B 584, Alloy C86300

2.3 STAINLESS STEEL SLIDE GATES

A. General: Design stainless steel gates, frames, and appurtenances of stainless steel reinforced with stainless steel structural shapes with a minimum thickness of not less than 1/4” inches for all components, capable of withstanding the water pressure in either direction with the water level at maximum operating level. The gates shall be suitable for the seating and unseating heads as shown and specified, measured to the centerline of the gate. The gates shall be provided for openings as shown. All welded components shall be passivated in accordance with ASTM A 380. If bead blasting is utilized, the entire slide and frame shall be blasted for a uniform finish.


B. Deflection: Reinforce gates as required to keep slide deflection at L/360 of the span or 1/16-inch, whichever is less, or less as required to properly operate and seal within specified limits.

C. Gate Seal Design: Except for gates in open channel configurations, gates shall

positively seal on all four sides. One horizontal seal shall be a fixed seal which the gate plate shall seat into; the other horizontal seal shall be tangential and allow the gate to slide past while maintaining specified leakage performance. Design gate for flush bottom closure on upward opening gates, and flush top closure on downward opening gates. Provide resilient (50 + 5 Durometer A) EPDM or neoprene flush closure seals. Install the flush closure seal across the bottom or top of the frame, mating with the side seats/seals to keep leakage within specified limits. Side and tangential top or bottom seals (where required) are to be self-adjusting single piece UHMW seat/seals with nitrile compression cords, secured with stainless steel retainers, and capable of being replaced without unbolting or disassembling any portion of the frame or the retainer. All seats and seals shall be mechanically fastened and field replaceable including the flush bottom invert seal. The UHMW shall be extruded to maintain smooth continuous sealing surfaces; machined UHMW seals or seats shall not be acceptable. Seat/seals will also act as the friction reducing bearing bars for the gate plate to slide against and will prevent metal to metal contact between the frame and plate. Seals shall limit leakage in seating or unseating direction to 0.05 gpm per foot of seal perimeter. P-seals or J-bulb seals will not be acceptable.

D. Guide Support: Where guides extend above concrete side walls, support guides by stainless steel structural members or by the gate operator support structure.

E. Seat Facings: Provide seat facings driven into dovetail grooves machined in the

face of the disc and frame.

F. Wedges: Provide gates with adjustable wedging devices as required to prevent excessive leakage. Mount the wedge adjustment on the slide.

G. Wall Thimbles: Furnish wall thimbles from the gate manufacturer except when

gates are to be attached to existing wall thimbles.

1. Existing frames and inverts shall be cleaned to remove surface rust and degraded materials, for flush mounting of new gates to existing frames. After mechanical surface preparation is complete to both concrete, stainless steel and cast iron substrates, an epoxy bonding adhesive shall be provided to achieve proper adhesion to clean stainless steel and clean cast iron. Provide Sikadur 32, Hi-Mod high-modulus, high-strength epoxy bonding / grouting adhesive for epoxy boding.


2. Provide new wall thimbles of the shape specified in the Gate Schedule of stainless steel. Extend the body of each thimble into the concrete or masonry as shown or specified, and in no case less than 6 inches. Provide ribs where necessary on the periphery of the thimble casting joining the flange, body, and collar and extending into the concrete to provide additional strength. Provide a rubber gasket or mastic between the gate frame and the thimble.

2.4 SLIDE GATE OPERATORS AND LIFTING STEMS

A. General: Provide slide gate operators and lifting stems that meet the requirements of the subsection headed Slide Gate Manual Operator and Slide Gate Electric Motor Operators - Nonmodulating, except as modified herein.

B. Frame: The guide frame shall constructed of 316L stainless steel and shall have a

minimum guide weight of 13 lb/ft for wall mounted gates and 6.5 lbs/ft for in-channel mounted and embedded gates. All seals shall be mounted in the frame. Lifting lugs shall be provided on the frame.

C. Slide: The slide shall be constructed of 316L stainless steel and shall engage the

frame a minimum of 1-inch on each side. The slide shall have a minimum thickness of 1/2-inch where it engages the frame.

D. Yoke: Mount operators on a structural yoke supported by a head frame. Construct

the yoke and head frame of standard rolled or extruded stainless steel, C-channel or similar structural members.

E. Support: Provide an operator supporting structure capable of supporting the

operator and all appurtenances with maximum deflection not to exceed 1/16-inch under full operating load. Design the structure with a factor of safety of 2.

F. Handwheel and Cranks: Mount manually operated handwheels or cranks directly

on the lifting mechanism to a centerline maximum height of 3 feet 6 inches above operating floor level. Where the lifting mechanism is above this elevation, mount the handwheel or crank on offset multi-gearbox arrangements with solid shafts and couplings to maintain the specified operating centerline height. Chain and sprocket offset operators shall not be allowed. Connect side-mounted wheel and crank operators to the lifting mechanism with stainless steel shafting supported on roller bearing mounts. Limit operator to a maximum pull of 40 pounds on the handwheel or crank.

G. Rising Stems: Provide rising stem operators, unless otherwise specified. Securely

fasten stems to the slide by means of a casting, mounting block or angles secured to the gate. Full depth, Acme-threaded stem to have 16 microfinish or better. Gate stem attachment to be provided with provisions for keying or pinning the stem to the slide attachment. Equip rising stem with a transparent plastic cover to protect the stem. Provide the cover with labels and other attachments that will facilitate its


use as an indicator of valve position. Positive mechanical seals shall be provided above and below the operating nut to exclude moisture and dirt and prevent leakage of lubricant out of the hoist. All stems shall have EIM Stem-A-Lube clear stem covers.

H. Stem Design: Design stems for the maximum operating torque of the operator and

the weight and service of the gate. Limit the length over radius of gyration (l/r) ratio of the stem to 200, and the stem diameter to 1.50 inches. For gates with slide heights of 96” or greater, the minimum stem diameter shall be 2.50 inches. Provide stems of stainless steel meeting the following applicable standards. Design stem for a safety factor of 2 based on a critical buckling compressive load calculated by the Euler Column formula where C=2 and assuming a 50 lb torque on the AWWA nut. Weld a stem pocket to the face of the stiffened side of the plate and to the uppermost stiffener. Fit the stem within the slide plate stem pocket and attach to the pocket by means of a minimum of two stainless steel bolts capable of withstanding the full force of the operator stem under full design head. Provide stem guides to support the stem as required to meet the stem design criteria, fabricated of the same alloy material as the gate and frame. Provide stem guides with bronze or UHMW bushings to reduce stem friction and wear as required by the installation. Provide stem guides adjustable in multiple dimensions to allow for alignment with operator and gate stem nut. Mount guides on the gate frame as required to support and align the stem(s) properly.

2.5 SLIDE GATE MANUAL OPERATORS

A. General: Provide slide gate operators with pedestal floor stands of the vertical handwheel-operated or crank-operated gearbox. The gearboxes shall be suitable for operation with a portable operator.

B. Manual Operators: Provide a handwheel of sufficient diameter so that the stand

will operate the gate with a maximum pull on the handwheel of 40 pounds.

C. Gear Boxes: When necessary to meet maximum pull limitations, provide bevel gear boxes with a suitable gear ration. Bevel gear boxes shall have stainless steel input and output shafts, gears supported by ball or roller bearings secured in a cast ductile iron housing bolted to the pedestal.

D. Materials: Provide pedestals, wall brackets and stand frames of stainless steel to

match the gate alloy with smooth exterior and neat appearance.

E. Nameplate and OPEN Indication Marking: Equip each stand with a nameplate stating the gate controlled by the stand and also stamp the operator with an arrow and the word OPEN to indicate the direction of rotation.

F. Rising Stems: Manual operators shall have input shafts and thrust bearings with

ball or roller bearings designed to take the thrust and input torque loads. Equip rising stem operator with a transparent plastic cover to protect the stem. Provide


the cover with labels and other attachments that will facilitate its use as an indicator of valve position.

G. Operating and Lift Nuts: Provide operating nuts or lift nuts of bronze meeting the

requirements of ASTM B 62 to connect with the handwheel or crank and with threads which will engage smoothly with those of the lifting shaft. Positive mechanical seals shall be provided above and below the operating nut to exclude moisture and dirt and prevent leakage of lubricant out of the hoist.

H. Manual-Operated Stands: Provide manual operated stands with handwheels or

handcranks that open the gate when the wheel is turned counterclockwise. Locate the center of the handwheel or handcrank approximately 36 inches above the operating floor.

2.6 SLIDE GATE ELECTRIC MOTOR OPERATORS - NONMODULATING

A. General: Provide nonmodulating electric motor operators of the close-coupled, electric motor-driven, worm gear type, complete with floor stand, motor, gearing, limit switches and auxiliary contacts, torque switches, position indicator, handwheel, integral controller, and all required appurtenances. Design the operators to lift gates from the fully closed to the fully open position and back. Provide operators that complete each operation in the time specified. Provide operators that hold the gates in any position from fully open to fully closed without vibration.

B. Operator Mounting: Design the operator to be mounted on the floorstand, unless

otherwise shown or specified.

C. Standard: Except as otherwise specified, provide operators meeting AWWA C542.

D. Open and Close Time Periods: Provide operators that move the gate at

approximately 12 inches per minute in either direction when the differential pressure is the maximum specified and the voltage at the terminals is within 15 percent of the nominal voltage. Design the operator to operate the gate through three consecutive opening and closing cycles or for a period of 15 minutes, whichever is longer, during every 60-minute period, at specified ambient temperature conditions under full differential pressure.

E. Temperature Range: Design the operator for outdoor operation and for an ambient

temperature range of -20 to 140 degrees F.

F. Torque: Design the operator to exert an unseating torque of at least 50 percent in excess of the required disc seating torque at the specified voltage, neglecting hammer-blow effect.


G. Power Gearing: Provide power gearing consisting of helical or spur gears and worming gearing. Fabricate helical and spur gears of accurately machined hardened alloy steel. Provide a hardened alloy steel worm with threads ground and polished after heat treating. Provide a nickel or manganese bronze worm gear. Use antifriction bearings throughout. Grease pack or oil bath lubricate the operator. Provide lubricants suitable for the ambient temperatures specified.

H. Lost-Motion Device: Design operators to include a lost-motion device that will

permit the motor to attain full speed, and then impart a hammer blow to the stem nut to start movement of the disc in both the opening and closing directions. Do not include this feature if the valve is for modulating service.

I. Handwheel-Manual Operation: Provide a handwheel for manual operation with a

maximum rim pull of 40 pounds. Design the handwheel so that it does not rotate during electrical operation and the motor does not rotate during manual handwheel operation. Provide an operator that is arranged so that motor or motor gearing failure does not prevent manual operation. Arrange the operator to automatically change from manual operation to electrical operation when its motor is energized and to continue electric operation until the operator is reset to manual operation. Provide a means for locking the drive in either manual or motor operation. Provide removable handwheels. Provide an adaptor key or drive nut to permit operation by a portable operator.

J. Declutching Mechanism: Provide a declutching mechanism to disengage the

motor mechanically but not electrically from motor to handwheel operation. If the clutch is of the external lever type, arrange it such that the lever does not move when the motor is energized.

K. Position Indication: Provide an operator-mounted gate position indicator of the

mechanical or indicating light type. For OPEN-CLOSED service, indicate the fully open, fully closed and intermediate gate position either mechanically or by lights. For modulating or throttling service, provide continuous gate position indication between the fully open and fully closed positions. Provide electrical contacts as required for remote indication of gate position.

L. Electric Motor Design: Provide an operator motor of the high torque, ball or roller

bearing, squirrel-cage type designed for continuous gate duty. Provide motor rated for 15 minute duty cycle or three complete opening and closing gate strokes, whichever is longer, during a 60 minute period under full differential pressure at 40 degrees C ambient. Design the motor for use on a nominal 480 volts, 3-phase, 60-hertz electrical service. Provide motor windings and leads with Class F or better insulation with built-in thermal overload protection. In other respects, provide motors meeting the requirements of Section 16220 “Electric Motors.”

M. Housing: Provide housings for controls, gears, and motors with integrally cast

flanges. Fully machine and template drill the flanges and their mating surfaces. Provide joints which are metal-to-metal or gasket or O-ring sealed as required.


N. Control and Motor Enclosures: Provide NEMA 4 control and motor enclosures, except as otherwise specified. Provide the controller with mechanical interlocks and mount as an integral part of the operator.

O. Electrical Compartment Heater: Provide electrical compartment heaters, unless otherwise specified.

P. Electrical Requirements: Provide electrical controls for the operator as shown or specified. Design operators for 480-volt, 3-phase, 60-hertz service. Design all control circuits for 120- volt, single-phase, 60-hertz ac. Provide an integral 480/120-volt control transformer with fused secondary.

Q. Reversing Controller, Overload Protection and Internal Wiring: Provide a NEMA

rated reversing controller, or an approved special duty rated reversing controller, complete with mechanical interlocks and controls as an integral part of the operator. Provide adequate overload protection in the controller or embedded in the motor windings. Install an overload device in each phase. If overload devices are installed in the motor windings, provide devices of the manual reset type with remote-indication with the contacts in the control circuit. Arrange the internal wiring in the operator so that the opening and closing coils cannot be energized simultaneously at any time, regardless of external wiring conditions.

R. Push Buttons and Selector Switches: Where operators are 6 feet or closer to the

floor and in an accessible location, mount OPEN- STOP-CLOSE push buttons or a selector switch as shown on the operator housing. Also mount red and green position indicator lights and, where shown or required, an amber ready light or MANUAL-AUTO mode selector on the operator housing. Where the operators are located over 6 feet from the floor or in an inaccessible location, connect all internal control and indication wiring to a terminal block within the operator enclosure and provide a separate control station for remote mounting. Provide the remote control station with the same NEMA rating as the operator.

S. Limit and Torque Switches: Provide the operator with limit and torque switches,

either direct or gear driven. Provide adjustable limit and torque switches with auxiliary contacts that are operative in either direction of travel. Provide limit switches that are "in step" with torque switches at all times, whether in motor or manual operation. Equip the operator with limit switches to stop movement in each direction and torque switches for protection against mechanical overload and to stop movement in either direction if an obstruction is encountered. Provide the number, function and arrangement of limit switches as shown, specified or required.

T. Circuit Breaker Module (CBM): Where shown, provide the operator with a NEMA

6P rated CBM. The CBM shall interrupt the circuit between the actuator and the incoming power supply. The CBM shall be mounted in a separate electrical compartment which is close-coupled to the actuator.


U. Remote Display Module (RDM): Provide one NEMA 6P rated RDMs for each actuator listed below. The RDMs shall be powered at 24VDC from the actuator.

1. SG30-3 (030-00003) 2. SG30-7 (030-00007) 3. SG30-4(030-00004) 4. SG30-8 (030-00008) 5. SG30-5 (030-00005) 6. SG30-9 (030-00009) 7. SG30-6 (030-00006) 8. SG30-10 (030-00010) 9. SG13-1 (013-00001) 10. SG13-2 (013-00002)

V. Additional Accessories: Provide additional limit switches, indicating lights,

position transmitters and remote position indicators, remote operating controls and other accessories and controls as shown, specified or required.

2.7 SLIDE GATE ELECTRIC MOTOR OPERATORS - MODULATING

A. General: Provide modulating motor operators that meet the requirements for nonmodulating operators, except as specified herein. In addition to the other equipment specified for nonmodulating operators, provide an electronic control module and a solid state reversing starter.

B. Control Module: Provide a solid-state type control module with a comparator

circuit which senses the error between the input command signal and the position feedback signal. Mount the control module within the operator switch compartment.

Accept a 4-20 mAdc input command signal. Provide zero and span adjustments to align minimum and maximum gate position with zero and 100 percent values of the input command signal. Provide deadband adjustment from 0.16 to 1.0 percent to eliminate excessive motor movement due to minor variation in the process variable signal.

Activate the solid state reversing starter to drive the actuator in the proper direction necessary to reduce the error to zero. Provide proportional band adjustment from 5-40 percent. When the error is outside the proportional band, run the actuator motor continuously toward set point. When the error is within the proportional band, pulse the actuator motor toward set point to prevent overshoot.

Provide actuator to open the gate when command input signal increases.

On loss of command input signal, have gate fail in last position. On loss of feedback signal, have gate fail in last position.


C. Switch and Push Buttons: Where the operator is 6 feet or less from the floor and in an accessible location, integrally mount a 3-position AUTO-OFF-MANUAL selector switch plus two push buttons marked OPEN and CLOSE on the operator housing. Where the operator is located more than 6 feet from the floor or in an inaccessible location, connect all internal control and indication wiring to a terminal block and provide a separate control station for remote mounting.

D. Auto and Manual Operations: Provide operators that, when in the AUTO position,

will respond to the automatic signal as described above. Provide operators that, when in the MANUAL position, will be operable by either push buttons or handwheel.

E. Motor Design: Design the motor specifically for gate operator service and to be

continuous rated for continuous modulating duty. Provide motor insulation of at least Class H.

2.8 TWO WIRE ACTUATOR CONTROL SYSTEM

A. General:

1. The data monitoring and control system for the Grit Chamber No.1 motor actuators shall consist of a hub cabinet and field units. The hub cabinet shall perform the tasks of a bus master, data, collector, data concentrator, protocol converter, and be a slave to a host system.

2. The data monitoring and control system for the Screenings and Grit Removal Facility motor actuators shall consist of a master station and field units. The master station shall perform the tasks of bus master, data collector, data concentrator, operator interface, protocol converter, sequencer, and be a slave to a host system.

B. Hub Cabinet

1. Furnish the hub cabinet assembly in a wall mount enclosure suitable for

outdoor installation. All signals from the hub cabinet to the field units shall be suitable for transmission over a two-wire twisted pair cable with overall shield (RS-485). Field units shall be connected to the hub cabinet in a star configuration as shown on drawing BN2.

2. Hub cabinet shall accept a 120VAC field power feed and shall be provided with redundant Modbus TCP/IP communication ports for connection to the plant DCS. Refer to drawing BN3 for hub cabinet details.


C. Master Station

1. The master station shall be of microprocessor type, suitable for indoor mounting. All signals from the master station to the field units shall be suitable for transmission over a two-wire twisted pair cable with overall shield and shall use a current loop serial data communication. This cable shall be connected from the master station to each field unit in series and then back to the master station.

2. The master station based system shall be capable of operating with up to 240

field units as shown on a two-wire shielded twisted pair data highway of length up to 20 kilometers (12.5 miles) without repeaters or other additional devices. The cable shall be connected from the master station to each field unit in turn and back to the master station.

3. The master station shall provide two communication ports with the

following modes of communication:

a. Serial data communication with a host system such as a Distributed Control System (DCS), PLC, RTU, or computer via data ports and the Modbus protocol.

b. Ethernet communication with support for Modbus TCP for data

exchange and TCP/IP for Web Server mode.

4. The master station and field units shall be protected against lightning by the provision of transient suppresser devices on all two-wire connection ports rated at 1.5k V for one millisecond. Opto-isolation shall be used within the field units and master station for enhanced noise protection.

5. The master station shall operate utilizing 120VAC, 60Hz, 1 amp

6. Enclosure: Provide the master station assembly housed in a wall mount,

Nema 12 steel enclosure. Provide the enclosure door with a window kit to allow viewing the master station display status.

7. Display Panel and Keypad: The master station shall include a multi-line

LCD display panel and operator control keypad to allow it to be used as an operator interface. The display panel shall be capable of showing the status and tag number of every connected field unit, actuator, or other device associated with the field unit, the status of the master station, the system settings, the host protocol messages, the loop performance and any alarms present on the system.

The keypad shall permit viewing of any or all of the system data, including preset parameters in each field unit. It shall also allow the connected


actuators or other devices to be operated. A security system shall be included to prevent access to control and setting of parameters.

8. Clock: A real time clock shall be included for alarm event time/date

marking and it shall be possible to connect a alarm event printer to the master.

9. Backup Power Source: A long life battery shall be incorporated to retain the

parameter settings, clock and sequence programs in memory in the absence of a main power supply. Should the battery deteriorate, a warning indication shall be displayed on the master station's status screen. In the absence of both the battery and the main power supply, the memory must be maintained for at least an hour. Furthermore, basic setup data (such as port setups and addresses) must be held in a non-volatile EEPROM.

10. Host communications shall include both a serial port and Ethernet ports.

Configure the master station for data exchange via the serial port and for master station status and diagnostics via the Ethernet port.

a. Serial Port:

(1) Serial host system communication shall be by RS485. The Baud rate shall be adjustable from 2,400 to 96,000 with odd, even, always zero, or no parity.

(2) The serial port host protocol shall be Modbus to minimize

custom software and programming.

b. Ethernet Port:

(1) Ethernet communication shall be configurable for either (1) data exchange using Modbus TCP protocol or (2) for status information and diagnostics using an embedded web server.

(2) Configure the modbus port for this project with the embedded

web server to allow the Owner to access the master station information over the plant’s Network using a standard web browser. Allow the user to set up to three levels of password protection for access to the embedded web server.

(3) Provide RJ-45, 10Base-T or 100Base-TX Ethernet port

(4) Provide redundant Ethernet copper uplink.


11. Field Communications

a. The two-wire loop shall use digital communication for data transmission and control. Each device shall be addressable.

b. The system shall continuously poll each connected field unit and report

any changes in status of the field unit or communication failure. On receipt of a command from the master station keypad or the host system, such as a PLC, the command shall take precedence over the data collection, polling shall cease, and the command shall be immediately transferred to the field unit. Provision shall be included to ensure the field unit has received the command correctly.

c. Failure or loss of power to any one or more connected field units on the

two-wire cable shall not cause loss of control or communication with the remaining devices connected on the cable. On restoration of power to a field unit, it shall be located and communicated with automatically.

d. The system shall tolerate a single open, short, or ground fault in the

two-wire cable without losing the ability to communicate and control any field unit remaining connected. An alarm shall be posted to indicate between which two field units the fault has occurred. Multiple faults shall result in the loss of communication with those field units which have become isolated and not the entire system. This cable security feature shall be inherent in the system and achieved using only a single cable without the need for duplicate or additional hardware.

e. Provide EIM Controlinc master station.

D. Field Unit – Element Control Module

1. Field units shall be plug-in cards, or easily added to existing valve or gate

actuators. They shall also be available in a variety of enclosures suitable for location in the field or control room environment.

2. Electronic Control Module (ECM): An electronic control module shall be

furnished in each actuator. The actuators shall be controlled and monitored over a digital communication control system which connects to the ECM. Each ECM shall include an addressable field unit that communicates over the network and executes open, close, stop, Emergency Shut Down (ESD), and GO TO position commands. Upon receipt of an ESD command, each ECM shall be configured to open, close, got to a fixed position, or remain in the same position. The field unit shall also communicate all actuator status and alarm diagnostic messages over the same communication network.


a. The communication network shall have a capacity of connecting up to 250 actuators over a single twisted pair cable. Multiple communication networks shall be provided with each network allocated to a single process area as shown.

b. The communication network shall employ Modbus protocol on a RS-485 network, and shall be redundant such that any single break or short in the communication cable shall not disable any actuators.

c. Each actuator’s pair of RS-485 communication ports shall accept

communication from either direction on the network and shall act as a pass through repeater forming a ring open at the Modbus master.

d. Upon loss of power, the pair of RS-485 communication ports shall be

provided with a bypass circuit which drops the actuator out of the network and statically passes messages through from one port to the other.

e. The ECM will be provided with all appurtenances necessary to reach

position status for both modulating and non-modulating applications.

f. Network communications shall be adjustable to 19.2k baud.

g. A master station shall not be required to connect the field unit network to the Modbus master.

h. Each actuator’s pair of RS-485 network communication connections

shall include high level surge protection.

i. Each actuator network shall be provided with a pair of RS-232 to RS-485 signal converters for connection to Modbus master PLC. Each converter shall include high level surge protection on all three ports.

3. Gate Actuator Field Units: When fitted to a suitable actuator, the field unit

shall require no additional power connection. The field unit shall form an integral part of the actuator assembly and it shall be an addition to the actuator control circuit and independent from that control circuit. It shall report the following signals to the master station:

Gate Opening, Gate Closing, Gate Open, Gate Closed, Remote.

In addition, it shall also report some or all of the following signals:

Open Torque Alarm, Closed Torque Alarm, Stall Alarm, Control Voltage Failure, Overload Relay Tripped, Diagnostic Alarm, Communication Failure, Actuator Alarm.


Remote control functions shall be provided to permit the actuator to Open Fully, Close Fully, Stop at Any Time, Assume an Intermediate Position, Assume Emergency Shut-Down (ESD) Position. It shall be possible to direct the actuator to position the valve to any desired intermediate position by entering a percentage open desired position. This applies to both modulating and non-modulating actuators.

Special Note: For actuators provided with remote mounted control stations (due to being inaccessible), program the field unit to monitor a contact on its ESD input from the remote control station’s Local-Off-Computer mode selector. Configure the wiring so that when the mode selector is in “Computer”, the ESD input is active. Program the field unit to only accept commands issued over the two-wire network when the ESD input is active (i.e. in Computer mode).

When forming an integral part of the actuator, the field unit must be located in a separate compartment from the field terminals. This compartment shall be double "O" ring sealed from the external environment. The whole enclosure shall be to IP68 (NEMA IV and NEMA VI).

When control room or electrical room located, the field unit shall be 19" rack mounted and provided with a suitable 19" rack. All connections to the unit shall be to the front.

The actuator and field unit combination shall be suitable for an operating temperature of -30°C to +70°C and +80°C storage.

E. Test Equipment

1. Provide hand-held test equipment to facilitate the testing of installed field units and the setting of field unit parameters. Field unit testers shall be able to emulate master station communication on a two-wire loop terminals, as well as evaluate status and diagnostic information.

2. Master station test equipment shall be in addition to the master station

display and keypad. It shall connect to the RS232 host communication port and be capable of emulating a host system.

3. Turn all test equipment over to Owner personnel following installation of

equipment.

F. Experience

1. Supplier must have at least three (3) years of commercial operating experience and be able to provide at least ten (10) trouble free site references.


PART 3 PART EXECUTION

3.1 INSTALLATION

A. General: Install slide gates in accordance with the manufacturer's recommendations and approved shop drawings and as specified in Division 1.

B. Floor Stands: Accurately center floor stands over the gate. Solidly bolt stands to

the floor or support structure, with approximately 3/4 inch of nonshrink cement grout beneath stands mounted on concrete or similar construction to assure uniform support. For stands installed within the area of a removable type floor, platform, or grating, securely mount them on their own support structure independent of the removable element, unless otherwise shown or specified.

C. Lubrication: Properly lubricate all pieces of equipment, furnished with lubrication

fittings, prior to start-up and at recommended intervals before turning equipment over to the OWNER. Attach a linen tag or heavy-duty shipping tag to each piece of equipment showing the date of lubrication and the name and number of lubricant used. Furnish typewritten list, in triplicate, of each item lubricated and the type of lubricant used.


A. Manufacturer's Field Services: Furnish the services of a qualified representative of the manufacturer to provide instruction on the proper installation of the equipment, inspect the completed installation, make any necessary adjustments, participate in the startup of the equipment, participate in the field testing of the equipment and place the equipment in trouble-free operation, as specified in Division 1.

B. Tests:

1. After installation of the gates, control equipment and all appurtenances,

subject the units to a field running test, as specified in Division 1, under actual operating conditions.

2. Test slide gates for leakage, strength, and opening and closing against the

maximum heads practicable to obtain under operating conditions. Stop any noticeable leaks around the frames or gates. Provide an installation for which the maximum allowable amount of seepage through any slide gate does not exceed limit specified.

3.3 OPERATION DEMONSTRATION

A. Manufacturer's Field Quality Control Services: Furnish the services of a qualified representative of each manufacturer to demonstrate the proper operation and instruct plant personnel in the equipment's operation and maintenance, as specified in Division 1.


3.4 CLEANING AND PAINTING

A. Paint ferrous components of slide gate in accordance with the requirements in Section 09900 “Painting.” Contractor to field coat manual operator housings after installation. Do not paint non-ferrous, bright, or rubbing surfaces, but protect and leave bright.

3.5 SCHEDULE

A. Abbreviations used in the schedule are as follows:

Types CISG (NSC) Cast Iron Slide Gate (Non-Self-Contained) SSG (NSC) Stainless Steel Slide Gate (Non-Self-Contained) SSG (SC) Stainless Steel Slide Gate (Self-Contained)

Direction of Head S Seating U Unseating

Operators BS Bench Stand (Manual) E Electric Motor (Nonmodulating) FS Floor Stand (Manual) ME Modulating Electric Motor Wall Thimble E Type E F Type F MJ Flanged by Mechanical Joint Connection


GATE SCHEDULE

Design Pressure

Service Type Gate Tag(s) Size of Clear Opening

W x H (inches)

Head (feet)

Centerline Elevation Operator

Wall Thimble Remarks

Grit Chamber No. 1 (Influent) SSG (SC)

SG30-3, SG30-4, SG30-5, SG30-6

72 x 84 7 S / 7 U -15.00 ME (See Note 2) F, Existing

(See Note 5) 4 gates required

(See Note 2)

Grit Chamber No. 1 (Effluent) SSG (SC)

SG30-7, SG30-8, SG30-9, SG30-10

72 x 84 7 S / 7 U -15.00 ME (See Note 2) F, Existing

(See Note 5) 4 gates required

(See Note 3)

Diversion Chamber SSG (SC) SG22 96 x 96 9 S / 19 U 16.83 E F (See Note 1) 1 gate required

Diversion Chamber SSG (SC) SG23 96 x 96 19 S / 9 U 16.83 E F (See Note 1) 1 gate required

Diversion Chamber SSG (SC) SG24 96 x 96 19 S / 10 U 16.83 E MJ (See Note 1) 1 gate required

By-Pass and Overflow Chamber SSG (NSC) SG18-1, SG18-2 60 x 60 6 S / 6 U 19.25 FS

E, Existing (See Note 5) 2 gates required


GATE SCHEDULE (CONTINUED)

Design Pressure

Service Type Gate Tag(s) Size of Clear Opening

W x H (inches)

Head (feet)

Centerline Elevation Operator

Wall Thimble Remarks

Screenings Channel (Influent) SSG (SC)

SG1A, SG2A, SG3A, SG4A

72 x 96 20 S / 7 U 21.00 E Embedded 4 gates required (See Note 4)

Screenings Channel (Effluent) SSG (SC)

SG1B, SG2B, SG3B, SG4B

72 x 96 7 S / 7 U 21.00 E Embedded 4 gates required

Grit Channel (Influent) SSG (SC)

SG1C, SG2C, SG3C, SG4C

72 x 96 7 S / 7 U 21.00 E Embedded 4 gates required

Grit Channel (Effluent) SSG (SC)

SG1D, SG2D, SG3D, SG4D

72 x 96 7 S / 20 U 21.00 E Embedded 4 gates required (See Note 4)

Inlet Chamber CI (NSC) SG13-1, SG-13-2 84 x 84 32 S / 7 U -14.25 ME

(See Note 2) F, Existing Operator and stem only

(See Note 7)

Gravity Thickener Overflow SSG (NSC) SG17-1 30 x 30 6 S / 6 U 16.50 FS F, Existing Stem coupling and stem

only (See Note 6)


Notes: 1. Wall Thimbles shall be round with square face. 2. Gate operators shall be submersible. 3. Grit Chamber No. 1 Influent Gates IE = -18.00** and Grit Chamber No. 1 Effluent Gates IE = -18.50**. 4. Embedded slide gates with top seal for flood protection. 5. Existing wall thimbles shall be inspected and measured by Contractor in presence of gate manufacturer to field-verify suitability for use with new

gates and to assess extent of refurbishment needed to existing wall thimbles. After mechanical surface preparation has been completed to concrete, stainless steel and cast iron substrates, an epoxy bonding adhesive will be required to achieve adhesion to the clean stainless steel and clean cast iron.

6. Existing gate and stem to remain. Contractor shall remove existing floor stand operator and cut stem below the top of the concrete slab. Contractor shall field measure existing stem and provide new stem coupling and new stem extension with 2” square operating nut to finished grade. Contractor shall provide T-handle wrench and valve box with cover.

7. Existing gate to remain. Contractor shall field measure existing stem and provide new stem and gate operator.

END OF SECTION


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SECTION 11288

STOP LOGS AND STOP GATES

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Requirements for furnishing and installing stop logs and stop gates and frames with all necessary parts and accessories for a complete installation. Stop logs and stop gates and frames shall be furnished by the same manufacturer.


Following:

1. Section 03150 - Concrete Accessories 2. Section 03310 - Cast-in-Place Concrete 3. Section 03600 - Grout 4. Section 05500 - Metal Fabrications

1.2 REFERENCES


1. AWWA C513 - Open Channel Fabricated Metal Slide Gates 1.3 SYSTEM DESCRIPTION

A. General: Stop log/plate locations and operating data are indicated in the stop log/plate schedule herein. Provide all stop gates of the same type from one manufacturer.

B. Design the gate anchorage system shall either be for attachment to existing concrete wall or embedded in new concrete wall as described on the drawings and the Schedule. It is the Contractor’s responsibility to confirm and coordinate all field dimensions, including but not limited to existing thimble flange dimensions, with the manufacturer prior to the submittal of drawings. The new anchorage system shall be designed with this considered.

1.4 SUBMITTALS



B. Shop Drawings: Submit shop drawings, including arrangement and erection drawings of the stop gates and frames and structural design data, if requested. Include the following:

1. Certificate of Compliance with the drawings and specifications, noting all

deviations from the drawings and specifications.

2. Installation reference list with contact names and numbers for no less than 20 installations of similar size and use.

3. Equipment weights and lifting points. 4. Recommendations for short and long term storage. 5. A copy of the manufacturer’s warranty.

C. Quality Control:

1. Submit manufacturer's certified performance and material specifications, as

specified.

2. Submit complete calculations for each size of motor operator indicating the force required to operate the gate, the operator force provided, full load and locked rotor current, and horsepower.

D. Operation and Maintenance Manuals: Submit operation and maintenance manuals

for the stop gates and frames. 1.5 DELIVERY, STORAGE AND HANDLING

A. General: Deliver, store and handle all products and materials as specified in Division 1.

1.6 QUALITY ASSURANCE

A. Ensure quality, conformance, and reliability with regard to the manufacturing and production of the stop logs and stop gates and frames described in this section. Meet the requirements listed in this section.

1. Supply equipment from a manufacturer regularly engaged in the

manufacturing and production of stop gates and frames for a minimum of twenty-five (25) years that has installed and had in satisfactory use in this application a minimum of twenty (20) installations of similar size units to the units specified.


2. Provide equipment that is the manufacturer’s standard product and only modified as necessary to comply with the drawings, specifications, and specified service conditions.

3. Guarantee all equipment against faulty or inadequate design, improper

assembly or installation, defective workmanship or materials, and breakage or other failure. Provide materials suitable for the service conditions.

PART 2 PRODUCT

2.1 MANUFACTURERS


1. Rodney Hunt Company 2. WACO Products, Inc. 3. Hydro Gate Corporation

2.2 GENERAL

A. Design stop logs and stop gates to meet the requirements of AWWA C513, including but not limited to allowable leakage, head and loading, structural strength, deflection, materials and minimum dimensions.

B. Provide stop logs and gates with structural components designed with a minimum safety factor of 4 with regards to ultimate tensile, compressive and shear strength and a minimum safety factor of 2 as regards tensile, compressive and shear yield strength.

2.3 STOP LOGS AND APPURTENANCES

A. Stop Logs:

1. Provide stop logs that have the characteristics and dimensions as tabulated in the Stop Log Schedule on the Drawings.

2. Stop logs shall be of fabricated aluminum with thickness and reinforcement as required for the head conditions in the stop log schedule.

3. Provide drainage such that neither air nor water can become trapped in a

stop log.

4. Joints: Provide mitered joints. Ground smooth all shop welds.


5. Provide all contact surfaces between stop log seals, grooves and log with a smooth mill.

6. Provide recesses on each stop log to accept the hooks from the stop log

lifter.

7. Seals:

a. Provide neoprene invert to mate with urethane corner seals.

b. Provide each log with three separate seals, two corner seals and an invert seal that form a continuous seal surface.

c. Frame mounted seals are not acceptable

d. Provide corner and vertical seals of molded urethane.

e. Maximum compression set at 25 percent

f. Low temperature brittleness in accordance with ASTM D-2000 for a

temperature of -40 degree Fahrenheit.

g. Removable and replaceable.

8. Hardware: Type 316 stainless steel.

9. Leakage:

a. Manufacture the stop logs to withstand the differential heads as shown in the stop log schedule with a leakage no greater than 0.1 GPM per linear foot of seal length regardless of the order in which the logs are installed.

10. Provide all stop logs for a particular location of identical construction and

capable of being installed in any order.

B. Stop Log Grooves

1. Stop log grooves: Stainless steel Type 316, minimum ¼ inch thickness.

2. Provide stop log grooves with a flush invert or without exposed guide surfaces as shown on the Drawings.

3. Provide grooves for embedment into the channels walls and floor, surface

mounting or in-channel mounting as specified and indicated with Type 316 L stainless steel hardware.


4. The sill shall be mounted flush with the channel/opening invert with no projections in the flow path.

C. Stop Log Lifter

1. Provide a stop log lifting device for each stop log size furnished by the stop

log manufacturer.

a. Lifting Device: Type 304L stainless steel b. Lifting cable and hardware: Type 316L stainless steel

2. Lifting device to be portable and match the channel width of the stop logs

provided. Provide lifters for each width of stop logs in accordance with the Stop Log Schedule on the Contract Drawings.

3. Each lifting device to include lifting cable and an eye or shackle.

4. Provide lifter with a latch, and unlatching lines operated from above, to

engage or disengage one stop log at a time.

5. Provide Lifting device to grab the log automatically when lowered into the stop log groove.

6. Lifting devices to be rated to handle five times the stop log weight.

D. Stop Log Storage Rack

1. Provide a Type 316 stainless steel stop log storage rack to house stop logs

and lifting devices while not in use.

2. Design, fabricate and furnish the stop log storage rack in accordance with Division 5 - Metals.

3. Design the stop log storage frame to avoid damage to the stop log seals.

E. Provide an aluminum platform cart to carry and transport nominal size 6-ft stop

logs and stop log lifter. Provide the cart of heavy duty hot-dipped galvanized construction with a load capacity of not less than 200 pounds, and with platform dimensions of not less than 60” x 30”. Provide two rigid wheels and two swivel casters mounted in a diamond pattern. Provide removable hot dipped galvanized stakes at each corner, and provide rigidly attached blocking recommended by the stop log manufacturer to hold the load of a stop log and stop log lifter in place during transport of the load.


2.4 STOP GATE PLATES AND APPURTENANCES

A. Stop Plates:

1. Fabricate stop gate plates from stainless steel reinforced with stainless steel structural shapes with a minimum thickness of not less than 1/4” inches, capable of withstanding the water pressure in either direction with the water level at maximum operating level.

2. Deflection under full design head will be no more than 1/360 of the span

width of the gate. 3. Fabricate stop gate plates so that plates will be interchangeable for all

channels of equal width with the same frame type.

4. Fabricate stop gate plates with slots for lifting purposes. Stop gate plates wider than 3 feet in width shall incorporate dual slots. All slots shall have welded reinforcing plates on both sides of the slot unless otherwise indicated and suitable for lifting with crane hooks or slings.

B. Stop Gate Guide Frames:

1. Fabricate the guide frame from minimum ¼-inch thickness stainless steel

extrusions and structural members to resist loads imposed by the design head. Side frame extrusions shall have a minimum weight of 4 pounds per foot. Provide frame with factory welded mitered corners where the side and invert frames meet. Guide frames constructed of plate or structural shapes shall not be accepted.

C. Seals:

1. Provide frames with self-adjusting ultra high molecular weight polyethylene

(UHMW) seat seals on both sides of the stop plate to reduce leakage, friction and wear between the plate and frame. UHMW seat seals shall self-adjust by means of a nitrile compression cord fit into an integral extruded slot in the UHMW. Minimum seal seating surface width shall be ¾ inches.

2. Bearing bars shall be extruded from virgin UHMW ultraviolet resistant

polymer and shall be held within the guide frame by integral retaining slots in the guide extrusion. Bearing bars or seals that are glued or mechanically fastened to the frame or plate shall not be accepted.

3. Seals shall be replaceable without special tools and without removing the

frame from its installed position.


PART 3 EXECUTION

3.1 INSTALLATION

A. Install stop gates and frames in accordance with the manufacturer's recommendations and approved shop drawings and as specified in Division 1.


A. Manufacturer's Field Services:

1. Furnish the services of a qualified representative of the manufacturer to provide instruction on proper installation of the equipment, inspect the completed installation, make any necessary adjustments, and participate in the field testing of the equipment, as specified in Division 1.

2. Furnish the services of a qualified representative of the manufacture to demonstrate the proper lifting and instruct the plant personnel in the equipment’s maintenance, as specified in Division 1.

B. Tests:

1. After installation of the stop gates and all appurtenances, subject the gates to

a field running test, as specified in Division 1, under actual operating conditions.

2. Test stop gates and frames for leakage and strength against the maximum

heads practicable to obtain under operating conditions. Verify that leakage does not exceed that specified in AWWA C-513 and repair, re-install or replace as necessary to meet this specification.


3.3 SCHEDULE

A. Abbreviations used in the schedule are as follows:

Design Head Frame Types

S Seating E Embedded U Unseating S Surface Mounted

Service Location Gate ID Type Frames Quantity

Size of Clear Opening

WxH (feet)

Design Head (feet)

Screenings and Grit Facility Influent and Effluent Channels Stop Logs E 2 sets 6’-0” x 8’-0” 6 S / 6 U

Grit Effluent Chamber Stop Logs E 1 set 8’ x 8’ 6 S / 6 U

Primary Influent Structure Stop Plate S 2 sets 8’ x 8’ 6 S / 6 U

END OF SECTION


SECTION 11306

NON-CLOG VORTEX PUMP

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: Requirements for furnishing and installing eight (8) horizontal vortex-type grit pumps, together with all accessories and appurtenances necessary for a complete installation. The Work includes pumps, motors, control panels, field, and shop tests. For equipment located in the Pump Room provide equipment and wiring meeting the requirements for National Electric Code unclassified space.


Following:

1. Section 00990 - Painting 2. Section 15108 - Miscellaneous Pipe and Fittings 3. Section 15124 - Gauges - Pressure and Vacuum 4. Section 16055 - Electrical Requirements for Shop-Assembled Equipment 5. Section 16220 - Electric Motors

1.2 REFERENCES


1. ASME B16.1 - Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, 250, 800

2. ASTM A 48 - Specification for Grey Iron Castings

3. ASTM A 532/A532M - Specification for Abrasion Resistance Cast Iron

4. AFBMA 9 - Load Ratings and Fatigue Life for Ball Bearings

5. AFBMA 11 - Load Ratings and Fatigue Life for Roller

Bearings

6. Hydraulic Institute Standards 1.3 SYSTEM DESCRIPTION

A. General: Provide pumping units of the single-stage, horizontal, end suction, nonclogging, centrifugal vortex, solids-handling type, each driven by an electric


motor with a constant speed belt drive and mounted on a common base. Arrange the pumping equipment as shown, suitable for installation in the spaces as shown without appreciable revision of the piping, and designed for the foundation arrangements shown. Design the pumping units to prevent undue wear and clogging.

B. Fluid Character: Provide pumping units to pump grit containing 0.95% percent

total solids.

C. Operating Requirements: Provide pumps to operate at the specified capacities and heads and over the range of specified operating conditions without cavitation, undue noise or vibration. Furnish pumps meeting following requirements:

Rating Data

Unit Designations GP1A – GP4A GP1B – GP4B

Number of Units 8 Unit Location Pump Room Capacity at rating point, gpm 500 Total head at rating point, feet 60 Shutoff head, minimum, approximate feet 72 Pump guaranteed efficiency at rating point, minimum, percent 32 NSPH available, feet Flooded Diameter of sphere that will pass through pump, minimum, inches 3 Pump suction diameter, inches 6 Pump discharge diameter, minimum, inches 4 Pump speed, maximum, rpm @ design point 1760 Suction lift, maximum, feet 20 Motor speed, maximum, rpm 1800 Motor horsepower, minimum, hp 40

D. Pump Curve: Design each pump to have a continuously rising characteristic curve

from the rating point specified to shutoff. Design the pump to have a characteristic curve passing through the rating point and which meets or exceeds the specified heads and capacities, all within the Hydraulic Institute test tolerances.

E. The Vortex Grit Removal System manufacturer as specified in Section 11319 shall be responsible for the grit equipment in Sections 11306 and 11321 to be a complete and working system.


1.4 SUBMITTALS


B. Shop Drawings: Submit shop drawings, including arrangement and erection

drawings of the equipment and equipment operating characteristics. Include the following:

1. Pump performance curves. Draw the curves for the specified conditions

(including those at reduced speed). Include head, brake horsepower, efficiency and required NPSH, all plotted as a function of capacity from zero to maximum capacity

2. General arrangement drawing. Include anchor methods and materials of

construction

3. Cross section drawings of pumps

4. Parts list with materials of construction, manufacturer and parts No. identified

5. Motor drawing and performance characteristics, and Motor Data Plate

Information

6. Spare parts list

7. Painting procedure

C. Quality Control Submittals: Submit 6 certified copies of Shop Test results.

D. Operation and Maintenance: Submit operation and maintenance manuals for the pumping equipment.

1.5 DELIVERY AND HANDLING

A. Deliver, store and handle all products and materials as specified in Division 1. 1.6 SPARE PARTS

A. General: Furnish the following spare parts:

1. One set of bearings for each pump and drive unit 2. One set of gaskets for each joint of each pump 3. One mechanical seal for each pump 4. One set of drive belts for each pump.


B. Special Tools: Furnish a complete set of special wrenches and other special tools sufficient for removing, dismantling, reassembling and maintaining the pumping units. Manufacture tools of forged steel, case hardened, and full finished. Furnish each set in a metal tool case with a handle and provision for padlocking. Provide list of tools contained in metal tool case.

C. Deliver, store, and handle all products and materials as specified in Division 1.

D. Provide Spare Parts wrapped or boxed, indexed, and tagged with complete information for use and reordering.

E. Spare Parts shall be in original factory packaging. Spare parts are to be clearly marked with the Mainsaver CMMS Part Number before being delivered to the Wastewater Warehouse.

F. Package spare parts in a manner suitable for long term storage that adequately protects against corrosion, humidity, and temperature.

PART 2 PRODUCTS

2.1 MANUFACTURERS


1. Smith & Loveless 2. WEMCO as manufactured by Weir Specialty Pumps

2.2 CASING ASSEMBLY

A. General: Design casings to be completely open from suction to discharge with no wearing rings or impeller faceplates. Provide all internal case clearances equal to the discharge diameter so that all material that will pass through the discharge connection will pass through the pump.

Provide flanged suction and discharge nozzles with drilling and dimensions meeting the requirements of ASME B16.1, Class 125.

B. Casing: Manufacture pump casings of a one-piece casting with integral suction

and discharge nozzles. Fabricate casings of ample thickness, provide with ribs or other suitable reinforcement to withstand the hydrostatic test pressure specified and to prevent excessive deflection due to the hydraulic thrust load.

C. Backplate: Provide a removable backplate to facilitate maintenance and repair of

the pump. Fit the backplate with a replaceable wear plate made of the same material as the casing. Arrange the backplate to permit removal of the pump


impeller, bearing frame and stuffing box as a unit without disconnecting the attached piping. Provide convenient access to the stuffing box and bearings.

D. Materials:

1. Construct pump casing of ASTM A532, Class I, Type A Ni-hard. 2. Construct backplate of ASTM A 48 cast iron.

2.3 IMPELLERS

A. General: Provide impellers of cup-type design and mounted completely out of the flow from suction to discharge. Provide pump out vanes on the back side of the impeller to reduce stuffing box pressure and axial thrust load on the bearings. Do not exceed 0.25 inches maximum clearance between the pump out vanes and the wear plate.

B. Materials: Construct the impeller of the same material as the casing.

C. Balance: Provide impellers in static and dynamic balance.

D. Assembly: Secure the impeller to the shaft by stainless steel key and locknut in such so it cannot be loosened due to rotation in either direction. Recess the nut into the impeller hub, shape to provide smooth flow at the eye of the impeller. Install the nut on a threaded portion of the shaft or to a stud permanently attached to the shaft. Arrange to facilitate easy removal of the impeller.

2.4 SHAFT ASSEMBLY

A. Shaft Diameter: Design shafts to be of sufficient diameter to transmit the maximum torque and hydraulic load developed and while limiting shaft deflection to .002 inches maximum, at the stuffing box, under maximum hydraulic load.

B. Shaft Material: Construct shafts of AISI Grade 1045 minimum steel.

C. Shaft Sleeve: Protect the shaft with a removable sleeve where it passes through

the stuffing box. Positively secure shaft sleeves to the shaft with a mechanical method which prevents the sleeve from rotating on the shaft. Seal the sleeve with an "O" ring to prohibit leakage of liquid out or air into the pump.

D. Shaft Sleeve Material: Construct shaft sleeves of Series 400 stainless steel and

with a Brinell hardness of not less than 450.

E. Critical Speed: Design the rotating assembly to develop first critical speed of not less then 150 percent of the rated speed.


2.5 BEARINGS

A. General: Provide two antifriction bearing assemblies of ample size to carry the loads imposed under continuous service without overheating. Provide one or more thrust bearings to carry axial loads, and guide bearings to carry radial loads. The guide bearing may be combined with the thrust bearing. Arrange the bearings to be independent of the casing and stuffing box and readily accessible for repair or replacement. Provide sufficient space to allow repacking of the stuffing box without disturbing the bearings.

B. Bearing Frame: Construct the bearing frame of cast iron or steel. Provide lip seals

and slingers to prevent the entrance of contaminants into the bearing. Shoulder fit all removable bearing housings, covers and brackets affecting alignment.

C. Bearing Life: Select bearings in accordance with AFBMA 9 and AFBMA 11,

Load Ratings and Fatigue Life for Ball and Roller Bearings, to have a minimum L10 bearing life of 20,000 hours at maximum pumping load that occurs under the specified operating conditions.

2.6 LUBRICATION

A. General: Provide oil lubrication for the antifriction bearings. Provide all bearings with oil reservoirs for a constant supply of clean oil and with suitable gauges to give visual indication that an adequate supply of lubricant is available and is being supplied to the bearings.

B. Sealing and Drain: Make provisions to prevent throwing or dripping of lubricant

from the bearings and properly drain all oil sumps and pockets. Provide the bearing housing with a venting device, oil fill and drain plug.

C. Lubrication Supply: Supply oil of the proper kind and quality as required to place

the pumping units in operation. Provide list of acceptable lubricants suitable to the application.

D. Lubrication: Properly lubricate all pieces of equipment, furnished with lubrication fittings, prior to start-up and at recommended intervals before turning equipment over to the OWNER. Attach a linen tag or heavy-duty shipping tag to each piece of equipment showing the date of lubrication and the name and number of lubricant used. Furnish typewritten list, in triplicate, of each item lubricated and the type of lubricant used.


2.7 MECHANICAL SEALS

A. Provide each pump with a double mechanical seal arranged for clean water flush of the seal chamber. Use 316 stainless steel metal parts. Use tungsten carbide stationary rings. Provide the rotating rings to be positively driven and made of tungsten carbide. Use flexible bellows for self-aligning seal. For the mechanical seal use John Crane Type 21 or equal.

2.8 ELECTRIC MOTORS

A. Provide each pump with a horizontal shaft electric motor drive. Provide motors meeting the requirements of Section 16220, and as described below:

Motors Grit Pumps

Rating 460 V, 3-phase, 60 Hz Horsepower 40 Speed, rpm 1800 Enclosure TEFC Insulation F Invertor Duty No Service Factor 1.15 Space Heater No Motor Wind Temp Switches No

2.9 CONSTANT SPEED BELT DRIVE

A. Drive the pump shaft with the electric motor through a V-belt drive assembly. Design the V-belt assembly to operate at constant speed, with a minimum service factor of 1.5, in continuous operation. Size the sheaves to attain the required pump speed. Construct sheaves of cast-iron or steel, and provide with tapered mounting bushings keyed and locked to the pump and motor shafts. Furnish tapered bushings designed to permit mounting of interchangeable sheaves of different diameters. Provide jack screws to assist removal of the sheave. Arrange motor mount to permit adjustment of drive center distance. Provide belts of the heavy-duty type designed for the sheaves and speeds required. Provide additional sheaves and belts as required to meet the specified conditions at reduced speeds. Equip each V-belt assembly with a steel or fiberglass belt guard. Belts and sheaves shall be manufactured by TB Wood’s Inc.

2.10 GAUGES

A. Provide each pump with suction and discharge gauges. Provide gauges meeting the requirements of Section 15124.


2.11 BASEPLATES

A. General: Provide a common baseplate for mounting the pump and its drive as a uni

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