Coastal Carolina University Architect’s Project No. 12.131 ... · Coastal Carolina University Architect’s Project No. 12.131.00 New Student Housing Construction (Elvington Property)

Coastal Carolina University Architect’s Project No. 12.131.00 New Student Housing Construction (Elvington Property) State Project No. H17-9592-MJ-A Site/ Utility Work- Bid Set 03/28/13

WATER DISTRIBUTION SYSTEMS 331000 - 1

SECTION 331000 WATER DISTRIBUTION SYSTEMS PART 1 GENERAL 1.01 SECTION INCLUDES

A. Water main piping, fittings, and accessories.

B. Water service line piping, fitting and accessories.

C. Pressure testing and sterilization. D. Outside Fire Service to Building.

1.02 RELATED SECTIONS

A. Section 312200 - Backfilling.

B. Section 312300 – Trench Excavation and Backfill. 1.03 REFERENCES

1. ASTM B 62 - Composition Bronze or Ounce Metal Castings.

2. ASTM C 94 - Ready-Mixed Concrete.

3. ASTM D 2241 - Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series).

4. ASTM D 2466 - Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

5. ASTM D 2564 - Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems.

6. ASTM D 2737 - Polyethylene (PE) Plastic Tubing.

7. ASTM D 2774 - Underground Installation of Thermoplastic Pressure Piping.

8. ASTM D 2855 - Making Solvent-Cemented Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings.

9. ASTM D 3139 - Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals.

10. ASTM F 402 - Safe Handling of Solvent Cements, Primers, and Cleaners Used for Joining

Thermoplastic Pipe and Fittings.

11. ASTM F 477 - Elastomeric Seals (Gaskets) for Joining Plastic Pipe.



12. AWWA C104/A21.4 - Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water.

13. AWWA C110/A21.10 - Ductile-Iron and Gray-Iron Fittings, 3 in. through 48 in., for Water and other Liquids.

14. AWWA C111/21.11 - Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.

15. AWWA C115/A21.15 - Flanged Ductile-Iron Pipe with Threaded Flanges.

16. AWWA C151/A21.51 - Ductile-Iron Pipe, Centrifugally Cast, for Water and other Liquids.

17. AWWA C153/A21.53 - Ductile-Iron Compact Fittings, 3 in. Through 16 in., for Water and

Other Liquids.

18. AWWA C500 - Gate Valves for Water and Sewerage Systems.

19. AWWA C502 - Dry-Barrel Fire Hydrants.

20. AWWA C508 - Swing-Check Valves for Waterworks Service, 2 in. Through 24 in. NPS.

21. AWWA C509 - Resilient-Seated Gate Valves for Water and Sewerage Systems.

22. AWWA C600 - Installation of Ductile-Iron Water Mains and their Appurtenances.

23. AWWA C651 - Disinfecting Water Mains.

24. AWWA C800 - Underground Service Line Valves and Fittings.

25. AWWA C900 - Polyvinyl Chloride (PVC) Pressure Pipe, 4 in. Through 12 in., for Water Distribution.

26. AWWA C905 - Polyvinyl Chloride (PVC) Pressure Pipe, 14 in. through 36 in., for Water

Distribution

27. AWWA C906 - High Density Polyethylene Pipe for Water Distribution.

28. AWWA M23 - PVC Pipe - Design and Installation.

29. MSS SP-80 - Bronze Gate, Globe, Angle and Check Valves.

30. UBPPA UNI-B-3 - Installation of Polyvinyl Chloride (PVC) Pressure Pipe.

31. UBPPA UNI-B-8 - Direct Tapping of Polyvinyl Chloride (PVC) Pressure Water Pipe. 32. NFPA 24 – Standard for the Installation of Private Fire Service Mains and Their

Appurtenances.

1.04 SUBMITTALS



A. Submit product data for pipe, valves, fire hydrants, and accessories.

1.05 GENERAL

1. All material or products which come into contact with drinking water shall be third party certified as meeting the specifications of the American National Institute/National Sanitation Foundation Standard 61, Drinking Water System Components - Health Effects. The certifying party shall be accredited by the American National Standards Institute.

2. Steel pipe and asbestos cement pipe shall not be used in potable water systems.

3. Natural rubber or other material which will support microbiological growth may not be used for

any gaskets, O-rings, and other products used for jointing pipes, setting meters or valves, or other appurtenances which will expose the material to the water.

4. Lubricants which will support microbiological growth shall not be used for slip-on joints. The

use of vegetable shortening is prohibited.

5. The use of solvent-weld PVC pipe and fittings in water mains 4-inch and larger is prohibited.

6. Any pipe, solder, or flux which is used in the installation or repair of any public water system, used in any plumbing, which provides water through connection to a public water system, for human consumption, shall be lead free. Lead free, for solder and flux, means those containing not more than 0.2% lead. Lead free, for pipes and pipe fittings, means those containing not more than 8.0% lead. Leaded joints necessary for the repair of CIP shall be exempt from the above.

7. No flushing device shall be directly connected to any sewer.

8. Chambers, pits or manholes containing valves, blow-offs, meters, air relief valves, or other

such appurtenances to a distribution system, shall not be connected directly to any storm drain or sanitary sewer.

9. All pipe, fittings, packing, jointing materials, valves and fire hydrants shall conform to Section

C of the AWWA Standards.

10. Water mains which have been previously used for conveying potable water may be reused provided they meet applicable criteria from AWWA Section C, ANSI/NSF 61, and ASTM D 1785 or D 2241. The mains must be thoroughly cleaned and restored practically to their original condition.

11. All water mains shall be detectible within 3 feet with electronic locating equipment.

12. All water mains shall be provided with a minimum of 30 inches of cover, unless pipe material

is ductile iron, or other approved materials, and if exposed should be insulated to prevent freezing.

1.06 DELIVERY, STORAGE, AND HANDLING



A Delivery and Storage: Inspect materials delivered to site for damage. Unload and store with

minimum handling. Store materials on site in enclosures or under protective covering. Store plastic piping, jointing materials, and rubber gaskets under cover out of direct sunlight. Do not store materials directly on the ground. Keep inside of pipes and fittings free of dirt and debris.

B. Handling: Handle fittings, valves, hydrants, and other accessories in a manner to ensure

delivery to the trench in sound undamaged condition. Take special care to avoid injury to coatings and linings on pipe and fittings; make satisfactory repairs if coatings or linings are damaged. Carry, do no drag pipe to the trench. Store rubber gaskets and plastic piping and jointing materials that are not to be installed immediately, under cover out of direct sunlight.

PART 2 PRODUCTS 2.01 MANUFACTURERS

A. U.S. Pipe

B. Griffin Pipe Products Company.

C. American Cast Iron Pipe Company.

D. McWane Cast Iron Pipe Company.

E. J M Pipe and Pipe Products.

F. DeZurik.

G. Clow Corporation.

H. Mueller Company.

I. M & H.

J. Rockwell International.

K. Substitutions: Under provisions of Section 1600. 2.02 WATER MAIN MATERIALS

A. Piping Materials

1. Ductile-Iron Piping

1. Pipe and Fittings: Pipe, except flanged pipe, shall conform to AWWA C151/A21.51 and shall be Pressure Class 350 for pipe sizes 12-inch and smaller and Pressure Class 250 for pipe sizes 14-inch and larger. Flanged pipe shall conform to AWWA C115/A21.15. Fittings shall conform to



AWWA C110/A21.10 or AWWA C153/A21.53. Fittings shall have pressure rating at least equivalent to that of the pipe. Ends of pipe and fittings shall be suitable for the specified joints. Pipe and fittings shall have cement-mortar lining conforming to AWWA C104/A21.4, standard thickness.

2. Joints and Jointing Material

(1) Joints: Joints for pipe shall be push-on; joints for fittings shall be

mechanical joints, except that, where indicated, joints shall be flanged.

(2) Push-On Joints: Shape of pipe ends, gaskets, and lubricant for joint assembly shall conform to AWWA C111/A21.11.

(3) Mechanical Joints: Dimensional and material requirements for pipe

ends, glands, bolts and nuts, and gaskets shall conform to AWWA C111/21.11.

(4) Flanged Joints: Bolts, nuts, and gaskets for flanged connections

shall be as recommended in the Appendix to AWWA C115/21.15.

B. PVC Plastic Water Pipe and Associated Fittings

1. Pipe and Fittings: Pipe 3-inch and smaller shall conform to ASTM D 2241 and shall

be plain end gasket bell end, Pressure Class 160 (DR26) with cast-iron-equivalent OD. Pipe 4-inch through 12-inch, shall conform to AWWA C900 and shall be plain end gasket bell end, Pressure Class 150 (DR18) with cast-iron-pipe-equivalent OD. Pipe 14-inch through 36-inch shall conform to AWWA C905 and shall be plain end gasket bell end, Pressure Class DR18 with cast-iron-pipe equivalent OD. Fittings shall be gray-iron or ductile-iron conforming to AWWA C110/A21.10 or AWWA C153/A21.53, and shall have cement-mortar lining conforming to AWWA C104/A21.4, standard thickness.

2. Joints and Jointing Material: Joints for pipe shall be push-on joints as specified in

ASTM D 3139. Joints between pipe and metal fittings, valves , and other accessories shall be mechanical-joints as specified in AWWA C111/A21.11. Provide each joint connection with an elastomeric gasket suitable for the bell with which it is to be used. Gaskets for push-on joints for pipe shall conform to ASTM F 477. Gaskets for mechanical joints for joint connections between pipe and metal fittings, valves, and other accessories shall be as specified in AWWA C111/A21.11.

3. Polyethylene (PE) Plastic Piping

1. Pipe and heat-fusion fittings shall conform to AWWA C906.

2.03 WATER SERVICE LINE MATERIALS

A. Piping Materials



1. Polyvinyl Chloride (PVC) Plastic Piping: ASTM D 2241, with SDR as required to

provide 160 psi minimum pressure rating. Fittings shall conform to ASTM D 2466. Pipe and fittings shall be of the same PVC plastic material. Plastic pipe and fittings shall bear the seal of approval of the National Sanitation Foundation for potable water service. Plastic Pipe and fittings shall be supplied from the same source.

1. Polyethylene (PE) Tubing: Tubing shall conform to ASTM D 2737, Pressure Class

200 psi (SDR7), IPS as indicated. Tubing shall bear the seal of the National Sanitation Foundation for potable water service.

B. Water Service Line Appurtenances

1. Corporation Stops: Shall be Mueller H15005: made of bronze conforming to ASTM B 62 and suitable for the working pressure of the system. Threaded ends for inlet and outlet of corporation stops shall conform to AWWA C800.

2. Service Fittings: Compression type or grip ring (Insta-Tite) conforming to ASTM B 62

to fit IPS as indicated.

3. Gate Valves: MSS SP-80, Class 150, solid wedge, nonrising stem, 2-inch size and smaller. Valves shall be Bronze Hammond #646 with Brass pack joint connector. Provide operating nut for 2-inch size valve; handwheel operator for valves smaller than 2-inch size.

4. Valve Boxes: Provide a valve box for each gate valve. Valve boxes for 2-inch and

larger size valve shall be of cast iron, shaft diameter 5 1/4 inches, and shall be adjustable. Provide a round head. Cast the word “WATER” on the lid. Each cast-iron box shall have a heavy coat of bituminous paint. Valve boxes for valves smaller than 2-inch size shall be of plastic.

5. Couplings: Plain end joint material shall be Dresser couplings, Style 38, Smith-Blair,

Inc. or approved equal.

6. Service Saddle: Shall be Smith-Blair, #315 Service Saddle with CCTAPER, Flexi-Blue epoxy with single strap stainless steel.

C. Gate Valves:

1. Water main valves 12 inches in diameter and smaller shall be resilient seated wedge

type gate valves (unless otherwise noted) and conform to AWWA Standard C509 as latest revised. Materials for the valves shall conform to the reference standards specified in AWWA C500.

2. Gate valves shall be of the non-rising stem type with O-ring seals or the rising stem

type (OS&Y) with conventional type packing.

3. Gates shall be encapsulated in rubber where exposed to line velocity, be field replaceable and provide a dual seal on the mating body seat.



4. Gate valves shall be furnished with flanged or mechanical joint type end connections.

5. Gate valves shall be epoxy coated, painted inside and out by the valve manufacturer.

6. All gate valves shall be equipped with a standard 2 inch square operation nut unless

otherwise noted. Valves shall open counter clockwise.

7. Gate valves shall be rated for 200 psi water working pressure and 400 psi hydrostatic test pressure.

8. Gate valves shall be Mueller or equivalent. All valves shall be of one manufacturer.

D. Butterfly Valves:

1. All butterfly valves shall be AWWA mechanical joint, BAW style resilient seat

butterfly valves or approved equal.

2. Butterfly valves shall be epoxy coated, inside and out, painted by the valve manufacturer.

3. Butterfly valves shall be used for water mains 14 inches in diameter and larger.

4. Butterfly valves shall be made to open to the left and shall have a 2" square

operating nut upon the end of the stem with the direction arrow clearly and plainly cast thereon.

5. All butterfly valves shall be gear actuated.

E. Tapping Sleeves & Valves:

1. Tapping sleeves shall be true mechanical joints (no fabricated sleeves). Mueller

model H-615 or equivalent.

2. All tapping sleeves shall be for cast iron, ductile iron, or PVC pipe. (Unless otherwise noted.)

3. All tapping valves shall be Mueller model H-687 or equivalent.

4. Tapping valves shall have a standard 2 inch square operating nut. Valves shall open

counter clockwise.

5. All tapping valves shall be resilient seat gate valves.

F. Large Check Valves:

1. Check valves 12-inches through 30-inches shall be the cushion swing check type.

2. Check valve shall be constructed with heavy cast iron or cast steel body with a



bronze or stainless steel seat ring, and a noncorrosive shaft for attachment of weight and lever.

3. The valve must be tight seating, its seat ring shall be renewable and must be

securely held in place by a threaded joint.

4. The valve disc shall be of cast iron or cast steel and shall be suspended from a noncorrosive shaft which will pass through a stuffing box.

5. The weighted swing will rapidly close the valve for the initial 90% of the flapper’s

travel. An air cylinder will provide cushioned closure of the valve for the final 10% of the flapper’s travel.

6. Check valves shall absolutely prevent the return of water back through the valve

when the inlet pressure decreases below the delivery pressure.

7. Hydrostatic test pressure for horizontal cushion swing check valves shall be 300 psi.

8. A tapped boss with plug shall be provided on the check valve bonnet for future use with a pressure gauge. The valve shall be as manufactured by Mueller.

G. Altitude Valve:

1. The altitude valve shall be non-throttling, double acting, closing to prevent overflow

when high water level is reached and opening to permit flow from the tank or reservoir to the distribution when the distribution pressure becomes less than full tank head.

2. The altitude valve shall be flanged body, fully mounted, external pilot operated, with

free floating piston, single seat, with seat bore equal to size of valve.

3. The minimum travel of the piston shall be equal to 25% of the diameter of the seat and for true alignment (to correct lateral thrust and stem binding) the piston shall be guided above and below the seat a distance equal to no less than 75% of the diameter of the seat. The piston shall be cushioned and so designed as to insure positive closure.

4. The main valve shall be packed with leather to insure tight closure and prevent metal

to metal friction and seating; furnished with indicator rod, to show position of opening of the piston, and pet-cocks for attachment to valve body for receiving gauges for testing purposes.

5. The pilot valve, controlling operation of main valve, shall have a range for

adjustment, be easily accessible and so arranged to allow for its removal from the main valve while the main valve is under pressure.

6. The pilot valve and all associated piping and fittings necessary for proper operation

shall be factory assembled and furnished with the altitude valve. The piping shall be



rigid brass pipe. An external strainer with blow-off will be provided in the control circuit to protect the pilot and speed control valves.

7. The design shall be such that repairs and dismantling internally of main valve may be

made without its removal from the line.

8. The 150 lb. flanged assembly shall conform to standards for flange thickness and drilling and wall thickness of body and caps. The valve shall be constructed of first class grey iron free from cold shuts, defective or spongy spots, and conforming to ASTM specification A 126 class B.

9. The bronze parts shall have a metal content as determined by ASTM B 62.

10. The valve will be equal in all respects to a Model 40 DAWR as manufactured by the

Ross Valve Mfg. Co., Inc., Troy, N.Y.

H. Valve Box:

1. Valve boxes shall be provided for each gate valve and shall be cast iron, adjustable screw type, with extension to grade.

2. As required, extension stems shall be provided to raise valve operating nut to 36

inches below grade.

3. Each valve box is to be mounted flush with the proposed grade.

4. Crushed stone backfill will be required between and around the valve and valve box.

5. Valve boxes in grassed areas shall have a precast concrete collar mounted flush with the final grade.

6. Valve boxes in pavement areas shall be brought flush with the proposed pavement

elevation.

7. Valve boxes to read "WATER" on the top cover.

8. All valve boxes will be marked with a concrete marker at the property line, 18" above grade.

I. Fire Hydrants:

1. Fire hydrants shall be traffic type, dry barrel, conforming to AWWA Standard C502, “Base Valve” design - "Fire Hydrant for Ordinary Waterworks Service", approved by the National Board of Fire Underwriters with National Standard Threads.

2. Hydrant shall have a breakable barrel length for 3 foot main cover.

3. Hydrant shall be equipped with 6" bottom hub, inlet strapping lugs, "O" ring seals and

an operating stem with a 2 inch solid operation nut.



4. Main valve will be 5-1/4" and its seat shall have bronze to bronze threads into hydrant shoe.

5. Hydrant shall be oil lubricated.

6. Hydrant shall be dry bonnet type and be provided with a drain outlet for draining

when the valve is closed.

7. Hydrant shall open left and be rated at 150 psi working pressure and 300 psi test pressure.

8. Hydrants shall be as specified on the drawing details.

J. Electric Actuator:

1. Basic Actuator:

The electric valve actuator shall include the motor, actuator unit gearing, limit switch gearing, position limit switches, torque switches, stem nut, declutch lever, and handwheel as a self-contained unit.

2. Enclosure:

The valve actuator motor and all electrical enclosures shall be NEMA 6 (submersible).

3. Motor:

The motor shall be specifically designed for valve actuator service and shall be of high starting torque, totally enclosed, non-ventilated construction. Motor insulation shall be a minimum NEMA class F, with a maximum continuous temperature rating of 155 degrees C (rise plus ambient) for the duty cycle specified. Optional insulation classes are available if service conditions warrant.

The motor shall be of sufficient size to open or close the valve at the maximum stated torque. The motor shall be capable of operating at plus or minus 10% of specified voltage. The motor duty rating shall be sufficient for one complete cycle (open-close-open, or reverse) without exceeding its temperature rating. Motor bearings shall be of the anti-friction type, and permanently lubricated.

The motor shall be an independent sub-assembly such that the power gearing shall not be an integral part of the motor assembly, to allow for motor or gear changes dictated by system operation requirements. Voltage shall be 120.60/10. The motor shall be equipped with internal thermal contacts to protect against motor overload and 120 volt AC heaters.

4. Power Gearing:

The actuator shall be a multiple reduction unit with power gearing consisting of spur,



helical, or bevel gears, and worm gearing. The spur, helical, or bevel gears, and worm shall be of hardened alloy steel, and the worm gear shall be alloy bronze. All gearing shall be accurately cut. Non-metallic, aluminum or cast gearing shall not be allowed. Anti-friction bearings shall be used throughout.

5. Lubrication:

All rotating power train components shall be immersed in grease with provisions for inspection and re-lubrication without disassembly. Lubricants shall be suitable for ambient conditions of minus 20 degrees F to 150 degrees F. Adequate seals shall be provided on all shafting.

6. Self-locking Feature:

Actuator gearing and /or stem threading shall be self-locking when required by the application.

7. Lost Motion Device

The actuator shall have a built in device, incorporated in the power train and located between the worm gear and actuator drive sleeve, to permit load impact under dynamic efficiency conditions, with a hammer blow effect, to allow the motor to reach full speed before engaging the valve load.

8. Manual Operation

A metallic handwheel shall be provided for manual operation with an arrow to indicate “open” rotation. The handwheel shall not rotate during motor operation. A fused motor shall not prevent manual operation. When in the manual operating mode, the actuator will remain in this mode until the motor is energized, at which time the actuator will automatically return to electric operation. Movement from motor operation to handwheel operation shall be accomplished by a positive padlockable declutch lever which mechanically disengages the motor and related gearing. It shall be impossible for simultaneous manual and motor operation to occur. Friction type declutch mechanism not acceptable.

9. Stem Nut

The valve actuator shall have a removable stem nut (or drive bushing) of high tensile bronze or other material compatible with the valve stem material.

10. Position Limit Switches

Position limit switches and the associated gearing shall be an integral part of the valve actuator. Limit switch gearing shall be of the intermittent type, made of bronze or stainless steel, grease lubricated, and totally enclosed to prevent dirt and foreign matter from entering the gear train. Switches shall be adjustable, allowing for trip points from fully open to fully closed positions of valve travel. They shall not be subject to breakage or slippage due to over-travel. Limit switch contacts shall be



heavy duty, silver plated with wiping action. The actuators shall have 16 contacts, 4 contacts/4 rotor type, all of the same basic design. Contacts shall be convertible from N/O, to N/C or reverse.

Switch design shall permit visual verification of switch position without disassembly.

11. Torque Switch

Each valve actuator shall be equipped with a switch, that will interrupt the control circuit in both the opening and closing directions when valve torque overload occurs or when valves require torque seating in the closed or open position. Contacts shall be silver plated. The torque switch shall have graduated dials for both open and close directions of travel and each shall be independently adjustable, with a positive means to limit the adjustability so as not to exceed the actuator output torque capability.

Switch design shall permit visible verification of switch position without disassembly.

12. Switch Contact Ratings:

The position limit switch and torque switch shall be rated 600 volts per NEMA

standard ICS 2-125, heavy duty.

13. Control Compartment Heater.

The control compartment shall be provided with a 120 volt space heater.

14. Actuator shall be Limitorque L120. Actuator shall be supplied with Integral open/stop/close switches and Local/Remote switches.

K. Post Hydrants: Dry-barrel type conforming to AWWA C502, “Base Valve” design, and shall

have 2 1/8-inch main valve opening, and one 2 ½-inch hose connection. Inlet shall have mechanical-joint end; end shall conform to the applicable requirements as specified for the joint. Size and shape of the operating nut, cap nut, and threads on hose connection shall be as specified in AWWA C502.

L. Tracer Wire for Nonmetallic Piping: Tracer wire shall be #12 gauge blue insulated cooper

wire, provided in sufficient length to be continuous over each separate run of nonmetallic pipe.

M. Post Indicator Valves:

1. Water main valves supplying water to a private fire line shall have a post indicator

valve with clear indication of a valve open or shut position. Post indicator valves shall conform to AWWA Standard C509 as latest revised. Materials for the valves shall conform to the reference standards specified in AWWA C500.

2. Gates shall be encapsulated in rubber where exposed to line velocity, be field

replaceable and provide a dual seal on the mating body seat.



4. Valves shall be furnished with flanged or mechanical joint type end connections.

5. Valves shall be epoxy coated, painted inside and out by the valve manufacturer.

6. Valves shall open counter clockwise.

7. Valves shall be rated for 200 psi water working pressure and 400 psi hydrostatic test

pressure.

8. Post indicator valves shall be Mueller or equivalent. All valves shall be of one manufacturer.

PART 3 EXECUTION 3.01 INSTALLATION OF PIPELINES A. General Requirements for Installation of Pipelines: These requirements shall apply to pipeline

installation except where specific exception is made in the “Special Requirements...” paragraphs.

1. Location of Water Lines: The work covered by this section shall be as indicated on

the drawings.

a. Water Piping Installation Parallel with Sanitary Sewer Piping

1. Normal Conditions. Water Piping shall be laid at least 10 feet horizontally from a sewer, sewer manhole, or force main whenever possible. Distance shall be measured edge to edge.

2. Unusual Conditions. When local conditions prevent a horizontal

separation of 10 feet, water piping may be laid closer to a sewer, sewer manhole, or force main provided:

(1) Bottom (invert) of the water piping shall be at least 18

inches above the top (crown) of the sewer piping.

(2) Where this vertical separation cannot be obtained, sewer piping shall be constructed of AWWA-approved water pipe, pressure tested in place without leakage prior to backfilling.

(3) Sewer manhole shall be watertight construction and tested

in place.

3. Drain-Fields and Spray-Fields. No water piping shall be laid less than 25 feet horizontally from any portion of a waste-water- tile-field or spray-field.



b. Installation of Water Piping Crossing Sanitary Sewer Piping 1. Normal Conditions. Water piping crossing above sewer piping shall

be laid to provide a separation of at least 18 inches between the bottom of the water piping and the top of the sewer piping.

2. Unusual Conditions. When local conditions prevent a vertical

separation described above, the following construction shall be used:

3. Sewer piping passing over or under water piping shall be

constructed of AWWA-approved water piping, pressure tested in place without leakage prior to backfilling.

4. Water piping passing under sewer piping shall, in addition, be

protected by providing the following. A vertical separation of at least 18 inches between bottom of sewer piping and top of water piping; adequate structural support for sewer piping to prevent excessive deflection of joints and settling on and breading of water piping; and that the length (minimum 18 feet) of water piping be centered at the point of crossing so that joints shall be equidistant and as far as possible from sewer piping.

5. Sanitary Sewer Piping or Sanitary Sewer Manholes. No water piping shall pass through or come in contact with any part of a sewer manhole.

2. Earthwork: Perform earthwork operations in accordance with Section 2100-

Excavation; Section 2200-Backfilling; and Section 2300-Trenching.

3. Pipe Laying and Jointing: Remove fins and burrs from pipe and fittings. Before placing in position, clean pipe, fittings, valves, and accessories and maintain in a clean condition. Provide proper facilities for lowering sections of pipe into trenches. Do not under any circumstances drop or dump pipe, fittings, valves, or other water line material into trenches. Cut pipe accurately to length established at the site and work into place without springing or forcing. Replace by one of the proper length any pipe or fitting that does not allow sufficient space for proper installation of jointing material. Blocking or wedging between bells and spigots will not be permitted. Lay bell-and-spigot pipe with bell end pointing in the direction of laying. Grade pipeline in straight lines; avoid formation of dips and low points. Support pipe at proper elevation and grade, and secure firm, uniform support. Wood support blocking will not be permitted. Provide continuous and uniform bedding in the trench for the pipe. Lay pipe so that full length of each section of pipe and each fitting will rest solidly on the pipe bedding; excavate recesses to accommodate bells and joints. Make proper provision for expansion and contraction of pipelines. Keep trenches free of water until joints have been properly made. Place backfill material in maximum 8-inch lifts. Tamp to compact each lift to a sufficient height above the pipe to adequately support and protect the pipe. Ensure that stones, other than crushed bedding, do not come in contact with the pipe and are not located within 6 inches of the pipe. At



the end of each work day, close open ends of pipe temporarily with wood blocks or bulkheads. Do not lay pipe when conditions or trench or weather prevents installation. Depth of cover over top of pipe shall not be less than 3 feet. Pipe shall not be used above grade.

4. Installation of Tracer Wire: Install a continuous length of tracer wire for full length of

each run of nonmetallic pipe. Attach wire to top of pipe in such manner that it will not be displaced during construction operations. Terminate tracer wire at each valve and arrange to allow connection of equipment for tracking pipe and to prevent interference of operating the valve. Standard underground type electrical wire connectors are to be used where splicing is required. All terminals are to be taped for corrosion and underground deterioration protection.

5. Connection to Existing Water Lines: Make connections to existing water lines with a

minimum interruption of service on the existing line. Use tapping and mechanical joint type sleeves for connections to be made under pressure. Bolt sleeves around mains; bolt valve conforming to AWWA C509 to the branch. Open valve, attach drilling machine, make tap, close valve, and remove drilling machine, all without interruption of service. Furnish all materials required to make connections into the existing water supply systems and perform all excavation, backfilling, and other incidental labor as required.

6. Cross Connection Control: There shall be no connection between the distribution

system and any pipes, pumps, hydrants, or tanks whereby unsafe water or other contamination materials may be discharged or drawn into the system. No by-passes shall be allowed, unless the bypass is also equipped with an equal, approved backflow prevention device. High hazard category cross connection shall require an air gap separation or an approved reduced pressure back flow preventer. Reduced pressure principal backflow prevention assemblies shall not be installed in any area location subject to possible flooding. This includes pits or vaults which are not provided with a gravity drain to the ground’s surface that is capable of exceeding the discharge rate of the relief valve. If installed in a pit, the drain line shall be 2 times the size of the line entering the backflow prevention device. The drain cannot empty into any type of ditch, storm drain, or sewer which could flood water back into the pit. All piping up to the inlet of the backflow prevention device must be suitable for potable water. The pipe must be AWWA or NSF approved. Fire line sprinkler systems and dedicated fire lines, except those in the high hazard category shall be protected by an approved double check valve assembly.

7. Air Relief Valve: Provide air relief valves at high points in the water main as required.

Automatic air relief valves shall not be used in situations where flooding of the manhole or chamber may occur.

8. Installation of Water Mains

a. Special Requirements for Ductile-Iron Piping

1. Installation, General: Unless otherwise specified in the following

subparagraphs, install pipe and fittings in accordance with



paragraph entitled “General Requirements for Installation of Pipelines” and with the requirements of AWWA C600 for pipe installation, joint assembly, valve-and-fitting installation, and thrust restraint.

2. Jointing:

(1) Make push-on joints with the gaskets and lubricant

previously specified for this type joint; assemble in accordance with the applicable requirements of AWWA C600 for joint assembly.

(2) Make mechanical joints with the gaskets, glands, bolts, and

nuts specified for this type joint; assemble in accordance with the applicable requirements of AWWA C600 for joint assembly and with recommendations of Appendix A to AWWA C111/A21.11.

(3) Make flanged joints with gaskets, bolts, and nuts previously

specified for this type joint. Make flanged joints up tight; avoid strain on flanges, fittings, and valves. Align bolt holes for each flanged joint. Use full size bolts for the bolt holes; use of undersized bolts to make up for misalignment of bolt holes or for any other purpose will not be permitted. Do not allow adjoining flange faces to be out of parallel to such degree that the flanged joint cannot be made watertight without straining the flange. When any flanged pipe or fitting has dimensions that do not allow the making of a proper flanged joint as specified, replace it by one of proper dimensions.

3. Pipe Anchorage: Provide concrete thrust blocks or joint restraints

as indicated for pipe anchorage at all tees, bends, plugs and hydrants on lines 2 ½ inches in diameter and larger. Thrust blocks shall be in accordance with the requirements of AWWA C600 for thrust restraint, except that size and positioning of thrust blocks shall be as indicated. Use concrete conforming to ASTM C 94 having a minimum compressive strength of 2,000 psi at 28 days; or use concrete of a mix not leaner than one part cement, 2 ½ parts sand, and 5 parts gravel, having the same minimum compressive strength.

4. Above-Water Crossings: The pipe shall be adequately supported

and anchored, protected from damage and freezing, accessible for repair or replacement.

5. Underwater Crossings: A minimum of 2 feet of cover shall be

provided over the pipe. When crossing water courses that are greater than 15 feet in width, the following shall be provided:



(1) The pipe joints shall be designed appropriately.

(2) Valves shall be located so the section can be isolated for

testing or repair; the valves on both sides of the crossing shall be easily accessible and not subject to flooding.

(3) A blow-off shall be provided on the side opposite the supply

service. b. Special Requirements for PVC Plastic Water Main

1. Installation, General: Unless otherwise specified in the following subparagraphs, install pipe and fittings in accordance with paragraph entitled “General Requirements for Installation of Pipelines” and requirements of UBPPA UNI-B-3 for laying of pipe, joining PVC pipe to fittings and accessories, and setting hydrants, valves, and fittings; and with recommendations for pipe joint assembly and appurtenance installation in AWWA M23, Chapter 7, “Installation.” PVC pipe shall not used above grade.

2. Jointing: Make push-on joints with elastomeric gaskets specified for

this type joint, using elastomeric-gasket bell-end pipe. For pipe-to-pipe push-on joint connections, use only pipe with push-on joint ends having factory-made bevel. Use an approved lubricant recommended by the pipe manufacturer for push-on joints. Assemble push-on joints for pipe-to-pipe joint connections in accordance with the requirements of UBPPA UNI-B-3 for laying the pipe and the recommendations in AWWA M23, Chapter 7, “Installation,” for pipe joint assembly. Make mechanical-joints with the gaskets, glands, bolts, and nuts specified for this type joint; assemble in accordance with the requirements of UBPPA UNI-B-3 for joining PVC pipe to fittings and accessories, with the applicable requirements of AWWA C600 for joint assembly, and with the recommendations of Appendix A to AWWA C111/A21.11. Cut off spigot end of pipe for mechanical-joint connections and do not re-bevel.

3. Pipe Anchorage: Provide concrete thrust blocks or joint restraints

as indicated for pipe anchorage at all tees, bends, plugs and hydrants on lines 2 ½ inches in diameter and larger. Thrust blocks shall be in accordance with the requirements of AWWA C600 for thrust restraint, except that size and positioning of thrust blocks shall be as indicated. Use concrete conforming to ASTM C 94 having a minimum compressive strength of 2,000 psi at 28 days; or use concrete of a mix not leaner than one part cement, 2 ½ parts sand, and 5 parts gravel, having the same minimum compressive strength.



c. Installation of Valves and Hydrants

1. Installation of Valves: Install gate valves conforming to AWWA C509 in accordance with AWWA C600 for valve-and -fitting installation and with the recommendations of the Appendix (“Installation, Operation, and Maintenance of Gate Valves”) to AWWA C509. Install gate valves on PVC water mains in addition in accordance with the recommendations of AWWA M23 for appurtenance installation in AWWA M23, Chapter 7, “Installation.” Install check valves in accordance with the applicable requirements of AWWA C600 for valve-and-fitting installation.

2. Installation of Hydrants: Install hydrants in accordance with the

requirements of AWWA C600 for hydrant installation and as indicated.

d. Installation of Water Service Piping

1. Location: Terminate water service lines approximately 5 feet from

the building line or at the points indicated.

2. Service Line Connections to Water Mains: Connect service lines to the main by a service saddle as indicated. Connect service lines to PVC plastic water mains in accordance with UBPPA UNI-B-8 and the recommendations of AWWA M23, Chapter 9, “Service Connections.”

3. Special Requirements for Installation of Plastic Piping

4. Plastic Piping Installation, General: Install pipe and fittings in

accordance with paragraph entitled “General Requirements for Installation of Pipelines” and with the applicable requirements of ASTM D 2774 and ASTM D 2855, unless otherwise specified. Handle solvent cements used to join plastic piping in accordance with ASTM F 402.

5. Jointing: Make solvent-cemented joints for PVC plastic piping using

the solvent cement specified for this material; assemble joints in accordance with ASTM D 2855. Make plastic pipe joints to other pipe materials in accordance with the recommendations of the plastic pipe manufacturer.

6. Plastic Pipe Connections to Appurtenances: Connect plastic pipe

service lines to corporation stops and gate valves in accordance with the recommendations of the plastic pipe manufacturer or as indicated.

3.02 DISINFECTION AND FLUSHING



A. Flush and disinfect new potable water lines and affected portions of existing potable water lines in accordance with AWWA C651. Apply chlorine by the continuous feed method. Chlorinate water lines with not less than 25 milligrams per liter of available chlorine. Water from the existing distribution system or other sources of supply shall be controlled so as to flow slowly into the newly laid pipeline during the application of chlorine. The solution shall be retained in the pipelines for not less than 24 hours. Flush the solution from the systems with clean water until maximum residual chlorine content is not greater than 0.2 parts per million or residual chlorine content of domestic water supply. Obtain a minimum of two samples from each sampling site for total coliform analysis. The number of sites depends on the amount of new construction but must include all dead-end lines, be representative of the water in the newly constructed mains, and shall be collected a minimum of every 1,200 linear feet. Prior to sampling, the chlorine residual must be reduced to normal system residual levels or be non-detectable in those systems not chlorinating. These samples must be collected at least 24 hours apart and must show the water lines to be absent of total coliform bacteria. The chlorine residual must also be measured and reported. If the membrane filter method of analysis is used for the coliform analysis, non-coliform growth must also be reported. If the non-coliform growth is greater than 80 colonies per 100 millimeters, the sample result is invalid and must be repeated. All samples must be analyzed by a State certified laboratory.

B. Prive Fire Service Lines shall be flushed as follows: Flow the required rate until water is clear as

indicated by no collection of foreign material in burlap bags at outlets such as hydrants and blow-offs. Flush at flows not less than 390 gpm (1476 L/min) for 4 in. pipe, 880 gpm (3331 L/min) for 6 in. pipe, 1560 gpm (5905 L/min) for 8 in. pipe, 2440 gpm (9235 L/min) for 10 in.

3.03 TESTING PROCEDURE

A. Test water mains and water service lines in accordance with the applicable specified

standard for hydrostatic testing.

B. The water main shall be subjected to a hydrostatic pressure of 150 pounds per square inch for a period of two hours.

C. Private Fire Line service mains shall be hydrostatically tested at 200 psi (13.8 bar) or 50

psi (3.5 bar) in excess of the system working pressure, whichever is greater, and shall maintain that pressure ± 5 psi (0.35 bar) for 2 hours.

D. The leakage during the test shall not be more than shown on the Leakage Allowance Table

or AWWA C600.

E. Any cracked or defective pipes, fittings, or valves discovered in consequence of the pressure test shall be removed and replaced by the Contractor at his own expense. The water line is to be retested at the required pressure for two hours.

F. Where pipeline construction ties into existing lines, and where it is not practicable to make a

hydrostatic pressure test, the Contractor shall leave this section of pipeline uncovered at each applicable joint for inspection for a period of 48 hours after the connection has been made and the line is place din service. The Contractor shall make the necessary restraints to



make sure that the water line does not blow apart at these uncovered joints. Any leakage discovered in these joints shall be immediately corrected by the Contractor.

G. All pressure tests must be witnessed for the two hour duration by the Engineer and/or a

qualified Inspector. The Contractor is to notify the Engineer a minimum of 24 hours prior to the pressure test.

LEAKAGE ALLOWANCE TABLE IN U.S. GALLONS PER 1000 FEET (FOR 50 JOINTS) PER TWO HOURS

(for a 150 psi Pressure Test)

Pipe Diameter 2" 3" 4" 6" 8" 10" 12"

Leakage Allowable (DIP) 0.37 0.55 0.74 1.10 1.47 1.84 2.21

Leakage Allowable (PVC) 0.33 0.50 0.66 0.99 1.32 1.66 1.99

Any other leakage allowance can be obtained by the following formulas:

Ductile Iron: PVC:

L=[SD(P)½] 133,200 L = [ND(P)½] 7,400

L = allowable leakage (gals./hr) L = allowable leakage (gals./hr) S = length of the pipeline tested (feet) N = # of joints in pipeline being tested D = diameter of pipe (inches) D = diameter of pipe (inches) P = average test pressure (psig) P = average test pressure (psig)

3.04 FIELD QUALITY CONTROL

A. Field Inspections: The Civil Engineer, City Inspector and SCDHEC inspector will conduct field inspections and witness field tests specified in this section. The Contractor shall perform field tests, and provide labor, equipment, and incidentals required for testing. The Contractor shall produce evidence, when required, that any item of work has been constructed properly in accordance with the drawings and specifications. Do not begin testing on any section of a pipeline where concrete thrust blocks have been provided until at least 5 days after placing of the concrete.

3.04 TESTING AND INSPECTION OF FIRE SERVICE MAINS

A. Testing and Inspections of Fire Service Mains and Appurtenances shall be in accordance with NFPA 24. Testing results shall be conducted by the Contractor and witnessed by the Civil Engineer, City Inspector and City Fire Marshall and recorded on the NFPA 24 “Contractors Material and Test Certificate for Underground Piping” from. Results shall be provided to the Civil Engineer and the Owner.

END OF SECTION


SANITARY SEWER GRAVITY SYSTEMS 333000 - 1

SECTION 333000 SANITARY SEWER GRAVITY SYSTEMS PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Gravity Sewer piping, fittings, and accessories.

B. Connection of building sanitary sewer system to municipal sewers.

C. Manholes, cleanouts and accessories.

1.2 RELATED SECTIONS

A. Section 312200 – Backfilling.

B. Section 312300 – Trench Excavation and Backfill.

1.3 REFERENCES

A. ANSI/ASTM A 746 - Ductile Iron Gravity Sewer Pipe.

B. ANSI/ASTM A 48 - Gray Iron Castings.

C. ANSI/ASTM C 76 - Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe.

D. ANSI/ASTM D 2321 - Recommended Practice for Underground Installation of Flexible Thermoplastic Sewer Pipe.

E. ANSI/ASTM D 2729 - Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings.

F. ANSI/ASTM D 3034 - Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings.

G. ANSI A21.10 - Ductile Iron Fittings.

H. ANSI A21.11 - Rubber Gasket Joint for Cast Iron and Ductile-Iron Pressure Pipe and Fittings.

I. ANSI/AWWA C 104 - Ductile Iron Pipe.

J. ANSI/AWWA C 151 - Ductile Iron Pipe, Centrifugally Cast in Metal Molds or Sand Molds, for Water or other Liquids.

K. ANSI/ASTM C 478 - Precast Concrete.

L. ASTM A 28 - Low Pressure Air Testing of Sewers.



1.4 REGULATORY REQUIREMENTS

A. Conform to applicable code and municipality requirements for materials and installation for the work in this section.

1.5 SUBMITTALS

A. Submit product data to the Engineer and Grand Strand Water and Sewer Authority on all equipment included in the pump station. (i.e.: pipe, pipe accessories, manholes, manhole accessories, cleanouts and cleanout accessories).

PART 2 - PRODUCTS 2.1 MANUFACTURERS

A. U.S. Pipe.

B. American Cast Iron Pipe Company.

C. Griffin Pipe Products Company.

D. McWane Cast Iron Pipe Company.

E. J M Pipe and Pipe Products.

F. Scepter Pipe.

G. Dewey Brothers - Water Tight Manholes.

H. Sumter Machinery Company Inc. - Standard Manhole Frames and Covers.

I. Taylor Precast or Tindall Concrete Products, Inc. - Manholes.

J. Thunderline Corporation - Link Seals.

K. Substitutions: Under provisions of Section 0550. 2.2 GENERAL

A. Intermixing of different types of pipe will not be permitted unless specified on the drawings or by approved written permission by the Engineer.

B. All pipe shall be of first quality with smooth interior and exterior surfaces, free from cracks, blisters,

honeycombs and other imperfections, and true to theoretical shapes and forms throughout the full length.

C. All pipe shall be subject to the inspection of the engineer at the pipe plant, trench, or point of

delivery, for purpose of culling and rejecting pipe (independent of laboratory test), which does not



conform to the requirements of these specifications. Such pipe shall be marked by the Engineer, and the Contractor shall remove it from the project site upon notice being received of its rejection.

D. PVC C900 Class 150 Pipe shall be used at depths of 14 feet and deeper and bedded to 1 foot above

the crown of the pipe, as well as where shown on the drawings.

E. Gravity lines 36 inches in diameter and larger shall be reinforced concrete pipe.

2.3 GRAVITY SEWER PIPE MATERIALS

A. Ductile Iron Pipe: ANSI/ASTM A746, ANSI/AWWA C151, Class 50, Cement Mortar Lined Pipe; inside nominal diameter as shown. Joints shall be mechanical, push on, flanged, or boltless ball, as needed or as shown on the drawings.

B. Ductile Iron Pipe Joint Device: ANSI A21.11, rubber gasket joint device.

C. Polyvinyl Chloride (PVC) Plastic Pipe: ANSI/ASTM D3034, SDR 35, Type PSM, Polyvinyl Chloride

(PVC) material; inside nominal diameter as shown. Bell and spigot style. Bed in accordance with ANSI/ASTM D2321 and drawings. Laying length shall be 13 feet ± 1 foot.

D. Reinforced Concrete Pipe: ANSI/ASTM C76, Class 3, 4, or 5 concrete pipe with mesh

reinforcement and inside nominal diameter as shown on the drawings. All RCP shall be high alkaline type pipe. All joints shall be "O" ring gasket type and grouted inside and out.

2.4 PIPE ACCESSORIES

A. Fittings: Same material as pipe, molded or formed to suit pipe size and end design, in required "T", bends, elbows, cleanouts, reducers, traps, and other configurations required unless otherwise shown on drawings.

B. All services or lateral lines shall be connected to mainline sewers with in-line service wyes only.

Saddle wyes, no combination fittings or wye/tee’s are not acceptable on new construction.

C. Link Seal - Wall seals for all pipe entering pump stations shall be installed in accordance with the manufacturer's installation instructions. All link seals shall be grouted in place after pipe placement.

2.5 MANHOLES AND CLEANOUTS

A. Frame and Cover: Iron casting confirming to ANSI/ASTM A48, Class 30C iron. Minimum manhole cover diameter shall be 24 inches, and the manhole ring and cover assembly shall not weigh less than 285 pounds. For elevations above the 50 year flood level, frames and covers shall be U.S. Foundry USF 668 and KL cover or equivalent. For elevations below the 50 year flood level, frames and covers shall be watertight U.S. Foundry USF 579 Ring and DC-SSG or equivalent.

B. Drop Manholes and Drop Connections shall be built at locations shown on the drawings or as

directed by the Engineer, and shall conform to the details on the drawings.

C. Manhole Steps: No manhole steps will be installed.

D. Rubber Boots: All manholes to be equipped with rubber boots and all stainless steel bands at each pipe portal



2.6 FILL MATERIAL

A. Ductile Iron Pipe: Approved subsoil as specified in Section 312200.

B. Polyvinyl Chloride (PVC) Plastic Pipe: Bed in accordance with bedding detail on drawings using material specified in Section 312200.

PART 3 - EXECUTION 3.1 GENERAL

A. The Contractor shall furnish all material and labor, and construct the gravity sewers shown on the drawings, including all clearing, grubbing, excavating, sheathing, backfilling, foundations, manholes, and other appurtenances, as shown on the drawings or as otherwise specified.

B. The work shall include all excavation, demolition, ditching, diking, pumping, bailing, draining,

flushing, testing, and all provisions necessary to protect and maintain buildings, fences, water and gas pipes, drainage culverts, power and telephone lines and cables, and other structures.

C. The contractor shall be responsible for the cleaning away of all rubbish, surplus materials, and the

furnishing of all materials, tools, implements, and labor required to build and put in complete working order the specified sewers and all structures appertaining thereto. The Contractor shall be responsible for disposal of all rubbish and surplus materials.

D. All sewers and appurtenances shall be cleared of all foreign debris.

3.2 SURVEYS, POINTS, AND INSTRUCTIONS

A. The Owner, through the Engineer, shall furnish vertical and horizontal control points and grades as may be necessary. The Contractor shall create his own alignment between such horizontal control points and be responsible for establishing elevations of the said points. This shall not relieve the Contractor of the responsibility to make careful and accurate measurements and for constructing the work accurately to the lines and grades furnished by the Engineer.

B. The Contractor shall give the Engineer reasonable notice (48 hours minimum) of his requirements

for such survey lines and grades as he may require.

C. The Contractor shall furnish and place as directed, all necessary guide boards and appurtenances, and give such other incidental assistance at the site as may be required by the Engineer for staking out the work.

D. The Contractor shall temporarily suspend construction operations which interfere with the Engineer's

activities. Operations will be suspended for as long as the Engineer deems necessary.

E. The Contractor shall carefully preserve the points furnished by the Engineer. Any restaking required will be at the cost of the Contractor.

F. The Contractor shall receive no extra compensation for any materials or services furnished by him

incidental to these operations of the Engineer.



3.3 ORDER OF WORK

A. The Owner reserves the right to direct the Contractor as to which portions of work should be constructed first, and upon order of the Engineer to verify that any complete portion of work is as specified and acceptable for service.

3.4 HIGHWAYS, STREETS, AND PUBLIC PROPERTY

A. The Contractor's operations in highways or public streets shall be confined to as small a space as is practicable, so as not to cause undue inconvenience to the public or abutting properties, and shall be subject to the approval of the Engineer.

B. The Contractor shall obtain, by agreement with property owner, any additional space required for

construction on private property at no cost to the Owner of the Project.

C. The Contractor shall fully adhere to the State Highway Department Encroachment Permit while operating in any State Right-of-Way.

D. Roadway crossings shall be accomplished by open ditch construction or by boring under pavement

as required by the State or other entity responsible for the street or road.

E. All materials and modes of operation shall be approved by the Engineer prior to the start of work.

F. Pavement, base, and subgrade courses which must be removed for constructing sewers and appurtenances in or across highways, roadways, and streets shall be replaced with the same general class and type of material used in the initial construction unless specified differently on the drawings or in the specifications.

G. Through traffic shall be maintained at all times during construction of sewer across all streets and

highways. If the open cut method is used, two separate cuts must be made and one lane of traffic must be open at all times.

H. All construction techniques shall comply with current editions of the State Highway Department

Standard Specifications and Traffic Control Manual.

I. The Contractor shall provide suitable bridges, approved by the Engineer, for any area where traffic will cross a trench.

3.5 EXISTING UTILITIES AND STRUCTURES

A. The Contractor shall give written notice (copy to the Engineer) to all Highway Departments, Municipalities, and Public Service Corporations whose poles, wires, pipes, conduits, survey monuments, bench marks, or structures/utilities may be affected by his operations.

B. Any existing utilities, structures, or monuments, damaged by the Contractor shall be repaired or

replaced by the Contractor at his own expense.

C. The approximate position of certain known underground lines are shown on the drawings for information only.

D. The Contractor shall locate all utilities by use of an electronic pipe locator or other satisfactory

methods.



E. Contractor shall excavate and expose all existing underground lines in advance of trenching

operations.

F. Removing and relaying of such lines and appurtenances due to interference with the proposed line and grade, in the opinion of the Engineer, will be completed at the expense of the Contractor, unless otherwise shown on the drawings.

3.6 POTABLE WATER PROTECTION

A. Adequate provision shall be made for the protection of potable water supplies from possible leakage from sewer located near water lines.

B. There shall be no physical connection between a public water supply system and a sewer system.

C. Where possible, sewer mains should be located at least ten (10) feet horizontally from existing or

proposed water mains. If local conditions prevent a lateral ten (10) foot separation or a sewer is to cross a water main then:

1. Sewer will be laid in a separate trench, with the elevation of the top of the sewer main at least

eighteen (18) inches below the bottom of the water main, or:

2. Sewer will be laid in the same trench as the water main with the water main located on a bench of undisturbed earth, and with the elevation of the top of the sewer at least eighteen (18) inches below the bottom of the water main, or:

3. If local conditions prevent the eighteen (18) inch vertical separation, then the sewer will be

laid under the water main and both the water and sewer shall be constructed of ductile iron pipe for a distance of ten (10) feet on each side of the crossing. The water and sewer lines will be pressure-tested to assure water tightness prior to backfilling.

D. When conditions require a sewer line to cross over a water main, both the water main and sewer line

shall be constructed of ductile iron pipe for a distance of ten (10) feet on each side of the crossing. The sewer main pipe shall be centered at the crossing and both water and sewer lines will be pressure-tested to assure water tightness prior to backfilling.

E. If conditions arise which prevent application of the above techniques, Contractor shall obtain written

approval from the Engineer prior to construction of the specific problem area.

3.7 LIGHTS AND PROTECTION

A. The Contractor shall provide protection in accordance with the General Provisions and the following.

B. The Contractor shall erect and maintain such strong and suitable barriers and such warning lights as

will effectively prevent the occurrence of any accident to health, limb, or property.

C. Lights shall be maintained between the hours of sunset and sunrise, or during any period as directed by the Engineer.

D. Where pipe lines are to be constructed in streets, highways or roadways, the Contractor shall take

all precautions and comply with all requirements, as may be necessary, to protect the improvements, including installation and maintenance of warning signs, lights, and barricades for the protection of



traffic. 3.8 EXCAVATION

A. Contractor to excavate in accordance with Section 2100 and the following.

B. Prior to any excavation, Contractor shall provide adequate protection (as long as necessary to prevent damage) for any part or parts of the project site to remain (lawns, sidewalks, fences, landscape, or hydrants).

C. Any and all damaged items shall be repaired or replaced in such a manner that the items in question

are returned to their original or better condition at the Contractor's expense.

D. Unstable soil shall be removed and replaced with mechanically tamped gravel or crushed stone as directed by the Engineer, at no additional cost to the Owner.

E. Excavation for manholes shall have a minimum of twelve (12) inches clearance on all sides.

F. Remove any water accumulated in excavation at no additional cost to Owner.

3.9 TRENCHING

A. Contractor to construct all trenching in accordance with Section 312300 and the following.

B. Trench width shall be wide enough to provide adequate space for workman to place and joint the pipe properly.

C. Trench bottom to be rounded to allow pipe to rest firmly on undisturbed soil or compacted bedding.

D. Contractor shall provide and use all bracing, sheathing, and shoring necessary to perform and

protect all excavations as shown on the drawings, as required for safety, as directed by the Engineer, or to conform to governing laws.

E. Excavated material shall be stockpiled on the Owner's property and located in such a manner to

prevent interference with any traffic, and existing or proposed structures or utilities.

F. Equipment, materials, trenches, and excavations which may cause a hazard or serve as obstructions to either vehicular or pedestrian traffic, shall be enclosed by fences or barricades, adequately lighted, to protect persons from injury and to avoid property damage.

G. The Contractor shall furnish temporary support, adequate protection and maintenance of all

underground and surface structures, drains, sewer, and other obstructions encountered in the process of work.

H. Trenches shall be properly dewatered prior to placement of the pipe. Where running sand is

encountered, well pointing method will be used. If soil conditions prohibit the well pointing method, trench drains of crushed stone or gravel shall be constructed to drain to suitably located sumps and the water removed by bailing or pumping. The Contractor shall dewater these areas, providing all labor, materials, tools, and equipment at no additional cost to the Owner.

3.10 EXAMINATION

A. Verify that trench cut and excavation base is ready to receive work, and excavations, dimensions,



and elevations are as indicated on drawings.

B. Beginning of installation means acceptance of existing conditions.

3.11 PREPARATIONS

A. Hand trim excavations to required elevations. Correct over excavation with fill material of fine aggregate.

B. Remove large stones or other hard matter which could damage the pipe or impede consistent

backfilling or compaction. 3.12 INSTALLATION-PIPE

A. Pipe shall be protected during handling against impact shocks and free fall. Pipe shall be kept clean at all times.

B. Any pipe, fitting, or accessory not meeting the specified ASTM Standard shall not be used.

C. Install pipe, fittings, and accessories in accordance with ANSI/ASTM D2321, and manufacturer's

instructions. Seal joints watertight.

D. Place pipe on approved bedding in accordance with the drawings and specifications.

E. Lay pipe to slope gradient noted on drawings.

F. Pipe laying shall begin at the lowest grade point with spigot ends pointing down grade and forming a uniform invert.

G. Pipe shall not be placed on blocking at any time unless approved by the Engineer, and then only at

manholes or other structures where temporary blocking may facilitate installation of the pipe. After the pipe has been installed, all blocking shall be removed and all voids filled with select material and compacted in place.

H. Increase compaction of each successive lift. Do not displace or damage pipe when compacting.

I. Connect to municipal sewer system with all required fittings, cleanouts, pipe and accessories.

J. All surfaces of pipe to be jointed, as well as the rubber gaskets, shall be cleaned and lubricated with

a vegetable soap or other lubricating agent as per the manufacturer's recommendations.

K. After the Contractor has properly jointed and sealed the pipe, the gasket shall be checked for proper position prior to installation of the next joint.

L. All end line pipe temporary or permanent shall be fully protected with a water-tight stopper to prevent

water, earth, or other foreign debris from entering the pipe.

M. Pipe of different material shall not be joined together unless directly specified by the Owner/Engineer. Changes in pipe material shall be made at manholes only.

3.13 INSTALLATION - MANHOLES AND CLEANOUTS

A. Form bottom of excavation clean and smooth to correct elevation.



B. Form and place cast-in-place concrete base pad or precast manhole section, with provision for

sanitary sewer pipe and sections.

C. Establish elevations and pipe inverts for inlets and outlets as indicated.

D. All invert channels shall be smooth and semi-circular in shape, conforming to the inside of the adjacent sewer pipe section.

E. Changes in direction of flow shall be made with a smooth curve, as large in radius as the size of the

manhole will allow.

F. Changes in the size and grade of the channels shall be formed directly in the concrete of the manhole base. The floor of the manhole outside the channels shall be smooth and shall slope toward the channels not less than one inch per foot nor more than two inches per foot.

G. Minimum diameter of manholes shall be 4'-0" (48").

H. Precast manholes shall conform to all requirements of ASTM C 478.

I. Mount lid and frame level in grout, secured to top cone section at elevation indicated.

J. All cleanouts shall be as shown on the drawings.

K. Cleanouts will be 6" in diameter, unless otherwise noted and will be of the same material as its

service lateral as directed by the Engineer.

L. Cleanouts located in asphalt or concrete pavement shall be ductile iron with an iron body ferrule and brass cap.

3.14 INSPECTION

A. All work done and materials furnished shall be subject to the inspection of the Engineer and his inspector.

B. All improper work shall be reconstructed at the Contractor's expense.

C. All materials which do not conform to the requirements of the specifications shall be removed from

the work upon notice being received from the Engineer of the rejection of such materials. The rejected materials shall be removed and replaced with approved materials at the Contractor's expense.

D. The Engineer reserves the right to mark rejected materials to distinguish them as such.

3.15 PIPE TESTING

A. A mandrel shall be pulled through PVC line sections at any time prior to or during the one year warranty period. A 5% mandrel shall be used on any line which has been constructed for less than thirty days. After 30 days a 7 1/2% mandrel will be allowed.

B. An approved mandrel, proving ring, pulling ropes and cables shall be provided by the Contractor for

testing PVC pipe at no additional cost to the Owner.



C. The mandrel shall be hand-pulled through the pipe using no wrenched or other mechanical devices except a pulley at the manhole invert. The pulley allows the mandrel to be pulled from ground level rather than from inside the manhole.

D. If, at any point in the pipe in question, one (1) man is unable to hand pull the mandrel through the

pipe, then the pipe will be deemed unacceptable. The failed pipe shall be removed and the problem solved at the Contractor's expense.

3.16 LIMITS OF INFILTRATION/EXFILTRATION

A. Measurements of infiltration/exfiltration will be made before sewage flows are allowed in the sewers.

B. Measurements for infiltration shall be made using a V-notch weir or by measuring the volume directly. Measurements for exfiltration shall be made by bulkheading the sewer at the end of the lower grade, partially filling the manhole at the upper end and computing the volume of leakage from the extent of the diminished volume of water in the manhole during the test period. (This method only for dry soil conditions).

C. All infiltration/exfiltration tests shall be made by the contractor in the presence of the Engineer.

D. All expenses of tests shall be paid by the Contractor.

E. Only on vitrified clay pipe (VCP) will the test for allowable limit of exfiltration and ground water

infiltration for the entire system of new sewer or any one trunk, interceptor or outfall sewer line, including connecting laterals, shall not exceed 50 gallons per day per inch of pipe diameter per mile of pipe. This rate will be applied to any length of pipe in order to isolate excessive infiltration/exfiltration areas.

3.17 LOW PRESSURE AIR TESTING OF GRAVITY SEWERS

A. Conform and adhere to ASTM A 28.

B. All gravity sewer pipe joints less than or equal to 36" in diameter shall be subject to low pressure leakage testing.

C. As soon after completing a reasonable length of sewer, the Contractor shall furnish all equipment,

material, and personnel to conduct a "Line Acceptance" test using low pressure air.

D. The equipment shall be approved and the test conducted under the supervision of the Engineer.

E. Testing shall be conducted after backfilling has been completed in accordance with these specifications.

F. All wyes, tees, lateral stubs, or other fittings shall be suitably capped to withstand the internal test

pressures. Caps shall be easily removable for future lateral connections or extensions.

G. After a manhole-to-manhole section of line has been cleaned, it shall be plugged at each manhole with pneumatic plugs inflated to 35 psig internal pressure. The design of the plugs shall be such that they will hold against the line test pressure without requiring external blocking or bracing.

H. Each pneumatic plug shall have a sealing length greater than or equal to the diameter of the pipe it

is to be used in, so that effective sealing will always take place around any nodule or lump that may be on the inner surface of the pipe.



I. Before actual line testing begins, all pneumatic plugs shall pass the following qualifying test in the

presence of the Engineer prior to use: One length of pipe shall be laid on the ground and sealed at both ends with the pneumatic plugs to be checked; air shall be introduced into the pipe until the pipe pressure reaches 9.0 psig. The pneumatic plugs being checked shall hold against this pressure without any bracing and any movement of the plugs.

J. One of the test plugs shall have two factory-equipped hole connections in addition to the hose

connection used to inflate the plug. One connection shall be used to continuously monitor the rising air pressure in the sealed line. The other connection shall be used only for introducing the low pressure air into the sealed line.

K. A 3 1/2 inch diameter, 0-30 psig air gauge shall be supplied by the Contractor for reading the internal

pressure of the line being tested. Calibrations from the 0-10 psig range shall be in tenths of pounds (not ounces) and shall cover 90% of the complete dial range. Provisions shall be made to allow installation of the Engineer's calibration gauge into the pressure reading line.

L. Low pressure air shall be introduced into the sealed line until the internal pressure reaches 4.0 psig

greater than the average back pressure of any ground water that may be above the pipe, but not greater than 9.0 psig. At least two (2) minutes shall be allowed for the air pressure to stabilize. After this period the hose used to introduce the pressure shall be disconnected from the air source in such a manner as to retain the pressure in the sealed line.

M. The portion of this line being tested shall be accepted if it does not lose air at a rate greater than

0.0015 cfm per square foot of internal pipe surface when tested at an average pressure between 3.5 and 4.0 psig greater than any back pressure exerted by ground water that may be over the pipe at the time of the test.

N. Time requirements for pressure drop of 1.0 psig or 0.5 psig (3.5 to 2.5 or 3.5 to 3.0 psig greater than

the average back pressure of any ground water that may be over the pipe) shall not be less than the time shown for the given diameter in the table at the end of this section (Table 1 - 0.5 psig,).

O. Where high ground water is known to exist, the height in feet of ground water above the invert to

sewer shall be divided by 2.31 and added to 3.5 psig to establish the pounds of pressure used for the line acceptance test in determining the time in minutes for the air pressure to decrease 1.0 psig. (Table times not affected).

P. If the installation fails to meet the requirements of the test, the Contractor shall determine at his own

expense the source of leakage. He shall repair or replace all defective materials and/or workmanship and then retest the installation for compliance with these specifications for the line acceptance test.

3.18 SEWER LINE HOUSE SERVICE

A. All house services not connected shall have a watertight plug or cap at the end.

B. Service, unless otherwise directed, shall extend from the main sewer line to the property line or street right-of-way.

C. The service shall be referenced with a 4" x 4" treated post marker or a PVC marker (painted pine

markers are not acceptable). All treated markers shall be painted with an exterior weatherproof paint, green in color. The marker shall extend 6" above ground and not less than 3 feet below ground. It shall be placed exactly 3 feet further than the end of the service and on a line perpendicular to the centerline of the main. If the 3 feet cannot be obtained due to obstructions, the



marker shall be set within 3 feet of the end of the marker which points to the service end location.

D. All services shall be minimum of 6 inches in diameter, unless otherwise directed.

E. Services shall be of the same material as the main line sewer unless shown otherwise.

F. Sewer laterals and stub outs installed at campgrounds and mobile home parks are required to have cast iron covers and kept closed when not in use.

3.19 FIELD QUALITY CONTROL

A. Field inspection will be performed by the Civil Engineer, the Grand Strand Water & Sewer Authority Inspector and the SCDHEC Inspector.

3.20 PROTECTION

A. Protect pipe from damage or displacement until backfilling operation is in progress. END OF SECTION


SEWAGE FORCE MAINS 333100-1

SECTION 333100 SEWAGE FORCE MAINS PART 1- SCOPE 1.01 WORK INCLUDED A. The work under this Section includes providing pressure piping and appurtenant items for

sewage force mains. B. Related Work Specified Elsewhere: 1. Section 312300- Trench Excavation and Backfill 2. Section 030000- Concrete 1.02 QUALITY ASSURANCE A. Design Requirements: 1. Force mains shall be laid with a minimum cover of 36-inches below finished grade,

unless otherwise indicated. 2. Sewage force mains shall be constructed of the materials indicated on the

Drawings. 3. Force mains smaller than 4-inches shall be constructed of PVC, Class 160, SDR 26

with PVC fittings, and mains 4-inches and larger shall be constructed of PVC, Class 100, C-900, SDR 25 and shall be installed in accordance with ASTM D-2321, latest revision.

4. PVC force mains 4-inches and larger in diameter shall be constructed with cast iron

fittings. 5. Changes in horizontal alignment of 45 degrees or less may be achieved through

use of allowable pipe deflection in lieu of fittings shown on the Drawings at the Contractor's option, but subject to approval of the Engineer as to layout. Said deflection shall not exceed limits set forth in applicable AWWA Standards.

6. Sewer force mains in relation to water lines must conform to "Ten State Standards",

Section 29.3, at a minimum. B. Pipe Inspection: The Contractor shall obtain from the pipe manufacturers a certificate of

inspection to the effect that the pipe and fittings supplied for this Contract have been inspected at the plant and that they meet the requirements of these specifications. All pipe and fittings shall be subjected to visual inspection at time of delivery by rail or truck, also just



before they are lowered into the trench to be laid, and joints or fittings that do not conform to these specifications will be rejected and must be removed immediately by the Contractor. The entire product of any plant may be rejected when, in the opinion of the Owner, the methods of manufacture fail to secure uniform results, or where the materials used are such as to produce inferior pipe or fittings.

C. Prevention of Electrolysis: 1. Where deemed necessary, electrolytic action through the contact of dissimilar

metals shall be prevented by either: a. The separation of one material from the other by means of an insulating or

dielectric coupling, or b. The use of alternative materials, as directed by the Engineer. 1.03 SUBMITTALS A. Shop Drawings: 1. In general, 6 copies of the following shop drawings shall be submitted to the Civil

Engineer for approval prior to construction: a. Mill test certificates or certified test reports on pipe b. Details of restrained and flexible joints c. Valve vaults d. Valves and valve boxes e. Air release valves f. Pipe laying schedule g. Temporary plug and anchorage system for hydrostatic pressure test h. Pre-stressed piles I. Transition joints at canal crossing



1.04 JOB CONDITIONS A. Water in Excavation: Water shall not be allowed in the trenches while the pipes are being

laid and/or tested. The Contractor shall not open more trench than the available pumping facilities are able to dewater to the satisfaction of the Engineer. The contractor shall assume responsibility for disposing of all water so as not to injure or interfere with the normal drainage of the territory in which he is working. In no case shall the pipelines being installed be used as drains for such water, and the ends of the pipe shall be kept properly and adequately blocked during construction by the use of approved stoppers and not by improvised equipment. All necessary precautions shall be taken to prevent the entrance of mud, sand, or other obstructing matter into the pipelines. If on completion of the work any such material has entered the pipelines, it must be cleaned as directed by the Engineer so that the entire system will be left clean and unobstructed.

PART 2-MATERIALS 2.01 PRODUCTS A. Ductile Iron Pipe and Fittings: 1. Ductile Iron Pipe: Ductile iron pipe shall conform to the requirements of ASTM

A-536 or latest revision. Joints for ductile iron pipe shall be mechanical (ANSI A21.11) or push on joints (ANSI A21.11, unless as otherwise specified. Pipe interior shall have a bituminous seal coat over a cement mortar lining conforming to ANSI Standard A21.5 Exterior of pipe shall have a bituminous coating applied by the airless spray method.

2. Special Pipe Lining: Ductile iron pipe 12-inches in diameter or larger shall be lined

with virgin polyethylene in lieu of cement mortar and bituminous seal coat. Polyethylene shall conform to the requirements of ASTM Designation D 1248 compounded with enough carbon black during manufacture to resist ultra violet rays during above ground storage. The polyethylene lining shall be fused in place, approximately 20 mils (.02-inches) in thickness, shall be tightly adherent to the pipe wall and shall extend from the spigot end to the gasket seat in the bell socket. The inside surface of the pipe to be lined with polyethylene shall be thoroughly ground and cleaned of oil, dirt and foreign matter.

3. Fittings: a. All ductile iron fittings shall be mechanical joint or single gasket,push on

type with a minimum pressure rating of 350 psi and shall conform to the requirements of ANSI Standard A21.10.



b. Mechanical joint and/or single gasket, push on type fittings shall be cement

lined, seal coated and outside coated as specified above for ductile iron pipe.

4. Joints: Mechanical joints consisting of bell, socket, gland, gasket, bolts and nuts

shall conform to ANSI Standard A21.11. Bolts shall be high strength, annealed, cast iron, or high strength low alloy steel, T-head type having hexagonal nuts. Bolts and nuts shall be machined true and nuts shall be tapped at right angles to a smooth bearing surface. Single seal gasket push on type joints shall conform to the requirements of ANSI A21.11 and shall be "Tyton", "Fastite", "Super Bell Tite", "Altite", or approved equal.

5. Restrained Joints: Restrained joints may be of the types fabricated by the various

manufacturers, upon approval by the Engineer of details submitted by the Contractor. Restrained joints that require field welding will not be acceptable, and the thickness of the pipe barrel remaining at grooves cut for restraint shall not be less than that required for the design wall thickness. Joints using set screws will not be acceptable. Restrained joints shall be furnished for 24-inches and larger pipe at changes indirection of the main.

6. Gaskets: Gaskets shall be of neoprene and shall have plain tips unless otherwise

specified. B. Cast Iron Pipe Fittings: Cast iron pipe fittings for PVC pipe shall be mechanical joint or

single gasket, push-on type with a minimum pressure rating of 150 psi and shall conform to the requirements of ANSI Standard A21.10. Fitting interior shall have a bituminous seal coat over a cement mortar lining conforming to ASNI Standard A21.4. Exterior of fitting shall have a bituminous coating.

C. Polyvinyl Chloride Pipe and Fittings: 1. Pipe: a. Polyvinyl chloride (PVC) pipe 4-inches and larger in diameter shall conform

to the requirements of AWWA C-900, PC100. b. Polyvinyl chloride pipe smaller than 4-inches shall conform to the

requirements of ASTM Designation D2241, 160 psi, SDR 26. Schedule 80 pipe.

2. Fittings: a. PVC pipe fittings 4-inches and larger shall be cast iron mechanical joint

fittings.



b. Fittings for PVC pipe smaller than 4-inches shall be Schedule 80 PVC with

solvent weld or threaded joints and conform to the requirements of ASTM Designation D 2467.

3. Joints: a. PVC pipe 4-inches and larger shall have provision for expansion and

contraction provided in the joints. All joints, except solvent weld and threaded joints, shall be designed for push on make up connection. A push on joint may be a coupling manufactured as an integral part of the pipe barrel consisting of a thickened section with an expanded bell with a groove to retain a rubber sealing ring of uniform cross section similar and equal to Johns-Manville Ring-Tite and Davis Meter Dav-Tite,or may be made with a separate twin gasketed coupling similar and equal to Certainteed Fluid-Tite. Joints shall conform to the requirements of ASTM Designation D 3139 and provide for the pressure rating of the pipe.

b. Joints in PVC pipe smaller than 4-inches shall be solvent welded in

accordance with the recommendations of the pipe manufacturer using the solvent welding compound furnished with the pipe, or shall be threaded. Threaded joints shall be used only with Schedule 80 pipe, or better. At threaded joints between PVC and metal pipes, the metal shall contain the socket end and the PVC side the spigot. A metal spigot shall not, under any circumstances, be screwed into a PVC socket.

D. Gate Valves: 1. Gate valves 3-inches in diameter and larger shall be iron body, nonrising stem,

bronze mounted gate valves, mechanical joint and/or single gasket push on type, conforming to requirements of the AWWA Standard C500 and shall be provided with a 2-inch square operating nut. Valves shall be of the resilent seat type and shall turn to the left (counterclockwise) to open. The seat and gate shall have smooth, perfectly machines surfaces and shall be water-tight when in contact. All valves shall be provided with O-ring seals. The design and machining of valves shall be such as to permit replacing the O-ring seals while in service without undue leakage. Valves shall be Mueller or approved equal.

2. Gate valves 16-inches in diameter and larger, installed horizontally, shall be

provided with bevel gearing, a gear case that can be repacked from outside, rollers, tracks, and scrapers constructed so that the weight of the gate is carried on the rollers throughout the entire length of travel. The design shall conform to the requirements of AWWA Standard C 500.

3. Gate valves for pipe less than 3-inches in diameter shall conform to the

requirements of Federal Specifications WW-V-54 for Class A, Type I, and shall be bronze, single wedge, non-rising stem, screwed bonnet, 125 pound S.P., 300 pound



W.O.G., with stuffing box re-packable under pressure and all parts renewable. Ends shall be as shown on the Drawings.

E. Plug Valves: Plug valves shall have Buna-N or neoprene rubber faced plugs and shall be of

eccentric construction. Valves shall be made of cast iron, or semisteel at least equal to ASTM A 126, Class B. Body seats of valves 3-inches and larger shall have a welded in overlay of not less than 90 percent pure nickel or fusion bonded A1-Clad Nylon II on all surfaces contacting the plug face. Stem bearings shall be of corrosion resistant material. All exposed bolts, nuts, springs, washers, etc., shall be stainless steel. Port areas for valves 20-inches and smaller shall be equal to at least 80 percent of the full pipe area. Port areas of valves 24-inches through 60-inches shall be 70 percent of full pipe area. Valves 4-inches and larger shall have adjustable packing glands or permanent non-adjusting packing and shall be capable of being repacked without the bonnet or plug being removed from the valve. Valves shall be designed for not less than 150 psi cold water, oil or gas working pressure. Valves shall have drip tight shutoff at a bi-directional test pressure of 100 psi with pressure in either direction. Valves shall be permanently lubricated and shall be provided with an angle underground actuator, 2-inches square operating nut and extended nut for wrench operation. The extended nut shall be within 6-inches of the top of the valve box, shall have a port position indicator and shall indicate direction to open the valve. Operators shall be sized for a minimum of 50 psi differential pressure. All valves shall be as manufactured by Milliken, M&H, Clow, ValMatic, DeZurik, or approved equal.

F. Check Valves: 1. No swing check valves will be allowed on the sewer transmission system. 2. Ball check valves shall consist of a gray cast iron Class 35 body and cover and a

hollow steel ball with a vulcanized nitrile rubber exterior. The ball check valve shall be installed in a horizontal or vertical position as shown on the plans. The valves shall be as manufactured by Flygt or approved equal.

G. Tapping Sleeves and Valves: Grand Strand Water and Sewer Authority shall make all "wet

taps". H. Valve Vaults: Valve vaults shall be of precast concrete of the type shown on the Drawings

and shall conform to the applicable requirements of Section 03000. The cover for the non-traffic bearing vault shall be constructed of 3/16-inch steel floor plate with reinforcement. After fabrication, the steel covers shall be galvanized by the hot dip method in conformance with the requirements of ASTM Designation A 123.

I. Valve Boxes: Cast iron valve boxes shall be provided for all valves installed underground

which do not have extended operators such as is required by the plug valves. The valve boxes shall be adjustable to fit the designated depth of earth cover over the valve and shall be designed so as to prevent the transmission of surface loads directly to the valve or piping. Valve boxes shall be 3 piece type and have an interior diameter of not less than 5-inches. The valve boxes shall be provided with covers marked with the word "SEWER". The covers shall be so constructed as to prevent tipping or rattling. Boxes shall be equal to Clow



Corporation No. F-2450, or Mueller Company No. H-10357. Extension sections shall be ductile or cast iron.

J. Air Release Valves: 1. Air release valves shall be of the manual type as shown on the Drawings.

Galvanized steel pipe shall conform to the requirements of ASTM Designation A 120, Schedule 40. Gate valves shall conform to the requirements of Federal Specification WW-V-54D, Type I, Class A, wedge disc, nonrising stem, 125 psi steam pressure rating.

2. Automatic air release valves shall be manufactured for sewage service. The valves

shall be so designed that they will not stick shut or leak water under continued long operating conditions and to insure opening under high internal pressure. The design shall incorporate a solids settling chamber or trap and a flushing system by which the trap and the entire valve can be backflushed and cleaned.

K. Concrete: Concrete shall conform to the requirements of Section 03000 CONCRETE. L. Castings: The manhole frame and cover shall conform to the ASTM Designation A 48,

Class 35. Castings shall be true to pattern inform and dimensions and free of pouring faults and other defects in positions which would impair their strength, or otherwise make them unfit for the service intended. The seating surfaces between frames and covers shall be machined to fit true. No plugging or filling will be allowed. Lifting or "pick" holes shall be provided, but shall not penetrate the cover. Casting patterns shall conform to those shown on the Drawings. The words "SANTITARY SEWER" shall be cast in the manhole cover. The manhole frame and cover shall be traffic bearing.

M. Tie Rods: Steel for tie rods and tie bolts shall conform to the requirements of ASTM

Designation A 242, and rods shall be galvanized in conformance with requirements of ASTM Designation A 123. Tie rods and tie bolts shall be Super Star Tierod Figure No. SS12 and Tiebolt Figure No. SST7 respectively as manufactured by Star National Products.

N. Coal Tar Epoxy: Coal tar epoxy shall be Kopper's Bitumastic 300M, Tnemec 46-413

Tneme-Tar or approved equal. O. Additional Work: Additional items of construction, necessary for the complete installation of

the systems, shall conform to specific details shown on the Drawings and shall be constructed of first-class materials conforming to the applicable portions of these specifications.



PART 3- WORKMANSHIP 3.01 PREPARATION A. Pipe Bedding and Pipe Zone Backfill: 1. Bedding materials should be placed to provide uniform and adequate longitudinal

support under the pipe. Blocking should not be used to bring the pipe to grade. Bell holes at each joint should be provided to permit the joint to be assembled properly while maintaining uniform pipe support. If the trench and trench bottom is composed of peat (PT), organic silts (OL), organic clays (OH), inorganic clays (CL, CH), or inorganic silts (MG,MH), the trench bottom shall be over-excavated and a 4" to 6" depth of granular or sandy material, composed of one of the following soil classifications GW, GP, SW, SP, GM, GC, SM, SC shall be compacted to not less than 85 percent of maximum density as determined by AASHTO T99.

2. After each pipe has been aligned and placed in final position, bedding material shall

be deposited and densified under the pipe haunches and on each side of the pipe up to 6" over the top of the pipe being laid.

3. Cleanliness: The interior of the pipes shall be thoroughly cleaned of all foreign

matter before being gently lowered into the trench and shall be kept clean during laying operations by means of plugs or other approved methods. During suspension of work for any reason at any time, a suitable stopper shall be placed in the end of the pipe last laid to prevent mud or other foreign material from entering the pipe.

3.02 INSTALLATION A. Pipe: 1. Gradient: Lines shall be laid straight, and depth of cover shall be maintained

uniform with respect to finish grade, whether grading is completed or proposed at time of pipe installation. When a grade or slope is shown on the Drawings, batter boards with string line paralleling design grade, or other previously approved means, shall be used by the Contractor to assure conformance to required grade.

2. Pipe Joint Deflection: Whenever it is desirable to deflect pipe, the amount of

deflection shall not exceed the limits as shown in AWWA Standard C600.



3. Rejects: Any pipe found defective shall be immediately removed and replaced with

sound pipe at the Contractor's expense. 4. Anchors: Concrete thrust blocks shall be placed at all bends, tees, plugs and other

fittings to provide lateral support, except when restrained joints are specified. thrust blocks shall conform to the details shown on the Drawings.

5. PVC: Polyvinyl pipe may be damaged by prolonged exposure to direct sunlight and

the Contractor shall take necessary precautions during storage and installation to avoid this damage. Pipe shall be stored under cover and sufficient backfill to shield it from the sun shall be placed as the pipe is installed.

B. Ductile Iron Pipe Joints: 1. Type: The joints of all pipelines shall be made absolutely tight. The particular joint

used shall be approved by the Owner prior to installation. Where shown on the Drawings or where, in the opinion of the Owner, settlement or vibration is likely to occur, all pipe joints shall be bolted.

2. Mechanical Joints: All type of mechanical joint pipes shall be laid and jointed in full

conformance with manufacturer's recommendations, which shall be submitted to the Engineer for review and approval before work is begun. Only especially skilled workmen shall be permitted to make up mechanical joints. Torque wrenches set as specified in AWWA Standard C 111, shall be used; or spanner type wrenches not longer than specified therein may be used without the permission of the Engineer.

3. Push On Joints: Single gasket push-on joints shall conform with ANSI A21.11,

latest revision. Push on joints shall be made in strict, complete compliance with the manufacturer's recommendations: Lubricant, if required, shall be an inert, nontoxic, water soluble compound incapable of harboring, supporting, or culturing bacterial life. Manufacturer's recommendations shall be submitted to the Engineer for review and approval before work is begun.

4. Flanged Joints: Flanged joints shall be constructed of ductile iron pipe conforming

to ANSI A21.6 screwed into flanged drilled and faced per ANSI B16.1 for both 125lb. or 250 lb. working pressure. The flange face shall be flat and perpendicular to the pipe centerline.

C. Polyvinyl Chloride Pipe Joints: The joints of all piping shall be made absolutely tight, and

joints polyvinyl chloride pipe shall be made in conformity with the requirements of the pipe manufacturer. For threaded joint make-up the male threaded end shall be wrapped with Teflon-type pipe tape. At threaded joints between PVC and metal pipes, the metal shall contain the socket end and the PVC side the spigot. A metal spigot shall not, under any circumstances, be screwed into a PVC socket.



D. Installing Valves and Boxes: 1. Valves: Valves shall be carefully inspected, opened wide and then tightly closed

and the various nuts and bolts shall be tested for tightness. Special care shall be taken to prevent any foreign matter from becoming lodged in the valve seat. Valves, unless shown otherwise, shall be set with their stems vertically above the center line of the pipe. Any valve that does not operate correctly shall be removed and replaced.

2. Valve Boxes: Valves boxes shall be carefully centered over the operating nuts of

the valves so as to permit a valve key to be fitted easily to the operating nut. In areas to be paved, valve boxes shall be set to conform to the level of the finished surface and held in position by a ring of concrete placed under the support flange as shown on the Drawings. The valve box shall not transmit surface loads to the pipe or valve. Care shall be taken to prevent earth and other material from entering the valve box. Any valve box which is out of alignment or whose top does not conform to the finished ground surface shall be dug out and reset. Before final acceptance of the work all valve boxes shall be adjusted to finish grade.

E. Concrete Encasement: 1. Concrete encasement shall be constructed in accordance with details shown on the

Drawings and shall be constructed of Class C concrete. Encasement shall be constructed where:

a. Indicated on the Drawings. b. The Engineer shall order the line encased. 2. The points of beginning and ending of pipe encasement shall be not more than

6-inches from a pipe joint to protect the pipe from cracking due to uneven settlement of its foundation or the effects of superimposed live loads.

F. Final Backfilling: 1. Final backfill above the pipe zone shall be in accordance with SECTION 02221,

TRENCH EXCAVATION AND BACKFILL. G. Identification: In order to preclude possible domestic water tapping, all installed

underground sanitary sewage force mains shall be marked with a continuous strip located within the top 90 degrees of the pipe. Said stripe shall be a minimum 2-inches in width and shall be "yellow" traffic paint No. 971-12.3, Code T-2, or other approved material. Backfill shall not be placed for 30 minutes following paint application. In lieu of the painted strips on PVC pipe the PVC pipe may be furnished with a brown printed "Force Main" legend as supplied by Davis Industries, Inc.



H. Concrete Protective Slabs: Where waterways, canals, ditches or other cuts are crossed, protective concrete slabs shall be installed across and to 10 feet each side of the bottom. Approved utility crossing signs shall be placed on the pipe alignment at each side of the canal, waterway, etc.

3.03 FIELD QUALITY CONTROL A. Flushing: All force mains shall be flushed to remove all sand and other foreign matter. The

velocity of the flushing water shall be at least 4-feet per second. Flushing shall be terminated at the direction of the Engineer. The Contractor shall dispose of the flushing water without causing a nuisance or property damage. Flushing shall be in accordance with Grand Strand Water and Sewer Authority requirements.

B. Cleaning: Prior to pressure and leakage testing, the interior of each main shall be cleaned

of accumulation of sand and other foreign matter by pressure or hand methods. Hand cleaning methods may consist of shoveling the material and pressure cleaning with a water hose. Care shall be exercised in cleaning to prevent damage to the pipe lining.

C. Hydrostatic Tests: 1. All components of the force main system, including fittings, connections and valves

shall remain uncovered until tested and accepted; provided, however, that pipe trenches under traveled streets or roads or in unstable soil conditions may be backfilled with the permission of the engineer. No testing shall be done until al concrete thrust blocking is in place and set. If high-early strength concrete is used, testing may be conducted 48 hours after the concrete is placed; otherwise thrust block concrete must cure 5 days before pressure testing commences. In testing, the part of the system under test shall be filled with water and subjected to a sustained pressure of 100 pounds per square inch. the piping shall be tested in sections, thereby testing each valve for secure closure. While the system is being filled, air shall be carefully and completely exhausted. If permanent air vents are not located at all high points, the Contractor shall install corporation stops or fittings and valves at such points so the air can be expelled as the pipe system is slowly filled with water.

2. Test pressure shall be maintained by pumping for at least 2 hours and until all

sections under test have been checked for evidence of leakage. Force main shall be tested for leakage in accordance with AWWA Standard, C600-82. Rate of loss shall not exceed that specified hereinafter. Visible leaks shall be corrected regardless of total leakage shown by test.

3. The system as a whole, or any part, shall be retested after completion of backfilling.

Such retest will be required for final acceptance. 4. All pumps, gauges and measuring devices shall be furnished, installed and

operated by the Contractor and all such equipment and devices and their installation shall be approved by the Engineer. All pressure and leakage testing shall be done in the presence of a representative of the Owner.



5. Water for testing and flushing shall be potable water provided by the Contractor

from a source approved by the Engineer. 6. Preliminary pressure testing may be waived by the Engineer for pipe 24-inches in

diameter and larger. D. Hydrostatic Test, By Division: 1. Upon satisfactory completion of the laying of pipe between valves, and prior to the

backfill operations, the length of force main installed under each contract division shall be pressure tested. The Contractor for each contract division shall provide a temporary plug and necessary anchorage system at each end of the force main installed under his contract. If work under the adjacent contract has been installed, the Contractor shall not connect to the adjacent work until his line has been tested. It may be necessary to omit several lengths of pipe at the ends of the line to be tested to permit space for the plug and anchorage system. Upon satisfactory completion of the tests, the plug and anchorage system shall be removed, the remaining lengths of pipe installed and the connection made to the adjacent contract. Should the adjacent work not be installed, a temporary plug shall be installed in the end of the line to prevent material from entering the line.

2. When the section of force main is ready for testing, the line shall be filled with water,

pumped to a pressure of 150 psi and maintained at that pressure for a period of three hours. The amount of leakage shall not exceed the allowable limit specified hereinafter.

E. Allowable Limits for Leakage: 1. The hydrostatic pressure tests shall be performed as hereinabove specified and no

installation, or section thereof, will be acceptable until the leakage is less than the number of gallons per hour as determined by the formula:

1/2 L= SD P 133200 in which, L=Allowable leakage, in gallons per hour S=Length of pipe being tested in feet D=Nominal pipe diameter; in inches P=Average test pressure during the test, in psi gauge.



2. For a 1000-foot segment of main with average test pressure of 150 psi the following

table may be used: Pipe Allowable Pipe Allowable Diameter(D) Leakage(L) Diameter(D) Leakage(L) Inches Gal/Hr Inches Gal/Hr. 3 0.27 14 1.28 4 0.41 16 1.47 6 0.58 18 1.65 8 0.76 20 1.84 l0 0.94 24 2.20 12 1.12 30 2.76 3. Water shall be supplied to the main during the test period as required to maintain

the test pressure as specified. The quantity used, which shall be compared to the above allowable quantity, shall be measured by pumping from a calibrated container. A 5/8-inch meter installed on the discharge side of the pump may be used to measure the leakage for large mains when approved by the Engineer.

F. Correction of Work: Where leakage exceeds the allowable limits, as specified hereinbefore,

the defective pipe or joints shall be located and repaired. If the defective portions cannot be located, the Contractor shall remove and reconstruct as much of the work as is necessary in order to conform to the specified limits. Any visible leaks or any defective pipe or joint shall be repaired or replaced as directed by the Engineer even though the total leakage is within the specified allowable limits. No additional payment will be made for the correction of defective work, or to damage to other parts of the work resulting from such corrective work.

3.04 SCHEDULE A. Connection To Existing System: 1. All connections to existing system shall be made to conform with the requirements

and under the direction of the owners of the existing system. Valves separating the mains being installed from existing mains shall be operated by or under the direction of said owner's representative. Some connections may require night work when peak flows are not anticipated. The cost of the work in making the connections shall be paid for by the Contractor.

END OF SECTION


SEWAGE PUMPING STATIONS 333200-1

SECTION 333200 SEWAGE PUMPING STATIONS PART 1- SCOPE 1.01 WORK INCLUDED A. The work covered by this section of the specifications consists of furnishing all labor,

equipment, pumping station, of the type shown on the drawings and/or as specified to provide a complete operating system. It shall be the Contractor's responsibility to furnish the necessary labor and material, and fully cooperate with the utilities in the construction of temporary and permanent facilities for electric power, water, and where required, telephone service.

1.02 GENERAL REQUIREMENTS A. Rules and Regulations: The installation shall comply with the applicable rules of the

National Electrical Code, Occupational Safety and Health Standards (OSHA) and the rules and regulations of the authority having jurisdiction, except where otherwise noted on the drawings or specified.

B. Assemblies or Units 1. Where the plans and specifications require the Contractor to furnish and install an

assembly or unit, the Contractor shall furnish all component parts as required by the manufacturer of the assembly or unit. Where duplicate or similar units are required, unless approved otherwise by the Engineer, only units furnished by the same manufacturer shall be furnished and installed.

2. Unless otherwise indicated in writing by the Engineer, the materials to be furnished

under this specification shall be new, standard products of manufacturers regularly engaged in the production of such equipment and shall be the manufacturer's latest standard design.

3. Where specifically required by this and/or other sections of the specifications, an

operational test at the factory shall be performed to substantiate the operation of the equipment. A copy of these tests shall be included in the operation and maintenance manuals furnished as specified elsewhere.

C. Initial Start-up and Operation 1. The initial start-up shall be by competent factory trained representatives of each

manufacturer of equipment being supplied for not less than one day for each station being placed into operation. In addition to the start-up, representative shall instruct the Owner's personnel in the operation, maintenance and adjustments of the equipment. One copy of the start-up test report shall be attached to the



manufacturer's operation and maintenance manual located in the control panel, one copy furnished to the Owner, and one copy furnished to the Engineer.

2. At least 60 days and not more than 90 days after start-up, a representative of the

manufacturer in company with a representative of the Owner shall inspect each station making necessary adjustments, as necessary.

3. Not less than 15 days nor more than 45 days prior to the expiration of the full

guarantee to the Owner, a representative of the manufacturer in company with a representative of the Owner shall inspect each station making all necessary repairs and adjustments.

4. The Contractor shall include in his costs the manufacturer's representative(s) for the

start-up spare parts, and the two additional inspections. D. Installation and Operation Manuals: Shall be furnished for each manufacturer's equipment

at each station. Each manual shall include, but not be limited to, installation, operation, maintenance instructions, spare parts lists giving manufacturer's stock or part number for each replaceable item, approval submittals and drawings, as follows: One copy to the Contractor; one copy in control panel of station; two copies sent directly to the Engineer (not to be included in the shipment of the equipment). One of these copies will be retained by the Engineer for his files, and the other copy forwarded to the Owner.

E. Manufacturer's Warranty: There shall be furnished in writing to the Owner for each piece of

equipment and each station, a manufacturer's guarantee against defects in material and workmanship for a period of one year, provided the station is properly serviced and operated under normal conditions and according to the manufacturer's instructions. The manufacturer shall replace, without additional expense to the Owner, any component which proves defective during the guarantee period. Items that are normally expended in service such as oil, grease, light bulbs, are to be exempt from the guarantee.

1.03 REGULATORY REQUIREMENTS

A. Conform to applicable code and municipality requirements for materials and installation for the work in this section.

1.04 SUBMITTALS

A. Submit product data to the Engineer and Grand Strand Water and Sewer Authority on all equipment included in the pump station. (i.e.: pumps, electrical controls, pipe, liquid level sensors).

PART 2- MATERIALS 2.01 PUMPING EQUIPMENT:



A. The pumping equipment shall be capable of handling raw, unscreened, sewage containing heavily sludge and fibrous materials without injurious damage during normal operation. Pumps shall be submersible sewage type with a directly connected suitable submersible motor.

Each pump motor cable shall be suitable for submersible pump application as indicated

thereon by a permanently embossed legend. The cable shall be sized in accordance with the NEC Standards for the actual motor load.

A galvanized lifting cable shall be installed on each pump. The working load rating shall be

not less than three times the weight of the pump. An eye shall be provided in the upper end for hooking on bracket. A bracket, separate from level regulator cable bracket, shall be mounted on wall of station below the lid to support each pump power and lifting cable.

Pumps shall be manufactured by Myers, and shall be the model, impeller, horsepower, voltage, and rpm as specified on the drawings. Pump access cover shall comply with ASTE Std. H-20 if located in areas of vehicular traffic.

Access frames and covers shall be per the pump suppliers slide out rail package specifications

The electronic controller shall be solid state voltage and phase-angle sensing circuit, driving

a single-pole, double throw, electro-magnetic relay. (See Drawings). The control panel to provide the required functions, as specified and/or as shown on the

drawings shall be furnished. Prior to shipment, each pump shall be inspected and tested as follows, with copies of the

certification and test results enclosed in the Installation and Operation Manuals: Pump Model Pump Serial Number Impeller Pattern and Size Motor Ratings (HP, line volts, full load amps) Motor and Cable Insulation Test, Dry Next, submerge pump and cable in not less than six feet of water and operate pump for a

minimum of 30 minutes recording: Motor voltage and current in each phase.

Immediately after removing pump make: Motor and cable insulation rest again. After completing the test, the end of the pump power cable shall be sealed against moisture entry, and shall remain sealed until start-up by manufacturer's representative. Prior to start-up, with the pump(s) removed from the wet well, the following tests shall be performed by the manufacturer's representative:



Verify Pump Model, Serial Number Motor and Cable Insulation Test After connection of power cable to control panel and before lowering pump(s) verify correct rotation. With pump(s) correctly set in wet well, verify pump rate and head operation, measure and record voltage at starter terminals, and measure and record current in each phase load. The necessary test instruments and gages to prove the operation of the pump(s) shall be supplied by the manufacturer's representative. The submersible pumping units, complete with motor, to be furnished and installed in this type of pumping station shall be the Fairbanks-Morse model and size, with speed, operating condition, electric power requirements, as shown on the drawings for each station.

B. Control Panels: The control panel furnished and installed for each station shall be as

specified and/or as shown on the drawings to provide automatic start and stop operations of the pumps on rising and falling level of the sewage, and to supply mechanical and electrical protection to the equipment. Each enclosure shall be stainless steel, NEMA 4X, with gasketed solid front cover door with door clamps and pad lock (by Owner) hasp and staple. Size shall provide adequate clearance for all installed and future equipment where shown. Hinged inner cover door shall have mounted thereon the pump H-O-A switches, sequence selector switches, running time meters, level indicator lights, and pump running lights. Openings in the door shall provide for operating circuit breaker handles. Back panel shall have mounted thereon the circuit breakers, starters, auxiliary and control relays, phase monitor, lightning arrester, terminal strips and emergency generator receptacle. Low voltage control circuits will be provided. Alarm and level control circuits shall be 24 volts. All relays shall be enclosed plug-in type so located that alarm light is readily visible. All wiring shall be front mounted with connections made either by push-on terminals or spade lugs under screw heads. Concealed wiring and twisted wire around terminals or soldered connections will not be permitted. Power connections shall be stranded (or solid depending on size) wire under clamp type terminals designed for that size and type of wire.

C. Pump Controller- Programmable Logic Controller (PLC)--shall be a dedicated solid state

unit. The operator interface shall be flush mounted and provide all the operating sequence functions as needed, and shall allow the operator to change any setting from the unit keypad. The controller, in conjunction with the liquid level sensors, shall be capable of controlling and sequencing two (2) or three (3) pumps. Liquid Level Sensors shall be Milltronic Hydro Ranger. The unit shall have a two line, 32-character, alphanumeric LCD display and a 16-position keypad for operator interface. Controller will be Square D #8020 SCP-401. The following functions and features shall be included:



1. Power Source--The source power shall be from a 120 volt isolation transformer rated UL Class 2 with a 120 volt secondary.

2. Analog Input Signal--The unit shall accept a 4-20 ma analog signal from the wet

well level sensing unit. The internal input analog signal shall be through a 12-bit binary A/D conversion which gives a 4,000 count resolution. The controller shall provide conditioning of the analog input signal including spanning, offsetting, quelling (rate-of-change-limiting), full-scaled ranging and display. Unit will be Square D #8030 ROM-121.

3. Pump Control Set Points--A turn-on and turn-off set point adjustment shall be

provided for two discrete pump control stages for differential operation in a pump down mode between the selected levels. Alternation shall be cycled each time all pumps are off and shall sequence the pumps in rotation. Each of the outputs shall have an open-collector lead relay driver circuit at up to 100 ma for control of each UL recognized load relay. The keypad shall allow setting the controlled pumps in a fixed sequence as an alternative operating mode to the automatic alternation.

4. Alarm Set Points--A turn-on and turn-off set point adjustment shall be provided for

High and Low Level Alarm functions with display and relay outputs for each. A common alarm relay output shall also be included. Each output shall have an open-collector load relay driver circuit at up to 100 ma for control of each UL recognized load relay.

5. Discrete Input Signals--The controller shall have sixteen (16) discrete (on/off) input

circuits to accept external input contacts including two pump run auxiliary, two pump faults, low level alarm, low level alarm restore, alarm silence, phase failure and generator on line. The on/off inputs shall be internally optically-isolated. these signals are used by the controller to monitor and react to the operating environment of the system. Unit will be Square D #8030 RIM-101.

6. LCD Panel display (Operator Interface)--The LCD display panel on the controller is

a multi-function display. It can display the input analog signal in feet and tenths of the wet well level and the running pumps. The display can show the pump stage and pump driver operation, or display the VFD Ramp and Level Ramp percentiles. It can also display any alarms or the time and date. All other features and functions shall be capable of being displayed to provide visual monitoring and setting of all adjustable parameters. Operator interface shall be Spectrum SOI-200.

7. Access Coding--The controller shall have an access code for protection against

unauthorized change of adjustments. Any operator shall be able to view the adjustments, but changes shall only be possible through use of the confidential Access Code.

8. Pump HOA Selector Switches--A three (3) position selector switch mounted on the

controls panel shall provide the hand, off or Automatic operating mode selection for each pump. The switches shall be oil-tight with 10 ampere rated contacts as required. A position indicating legend plat and an identifying engraved name plate shall be provided with each switch. In Hand position with pumps shall run



continuously under the speed control of the manual potentionmeter subject only to low level shutdown. In Automatic position the pumps shall respond to the pump controller unit and start/stop at the preset wet well levels and with speed control subject and proportional to the wet level. In Off position the pumps shall be locked-out and not operate.

9. Pump Run Indicator Lights--A run pilot light shall be mounted on the controls panel

for each pump to turn on when the pump VFD unit is on to indicate pump run. The pilot lights shall be 120 volt oil-tight type with a red lens.

10. Elapsed Time Meters--An elapsed time meter shall be mounted on the controls

panel for each pump to record the accumulated running time of the pump motor. It shall run when the pump is operated in Hand or Auto mode. It shall be 120 volt non-resetable and record time in hours (6 digits) and tenths.

11. Control Terminal Blocks--Control terminal blocks shall be provided for the

connection of all remote devices and signals. Each terminal block shall be legibly marked as indicated on the control schematic. The terminals shall be pressure plat screw type with a minimum of a #8 screw, and include an adequate barrier between terminals to provide a 600 V. rating.

12. Alarm System--Each of the following alarm functions shall be included in the panel

to continually monitor the specific condition for which it is intended and provide the indication and response described. The indicator pilot lights for all alarms shall be oil-tight, 120 volt with name plates to identify each function. These alarm functions are to protect the pumps and indicate abnormal conditions of the system.

13. Alarm Light--The exterior panel mounted alarm light shall be a weatherproof,

shatterproof red light fixture with a 40 watt bulb to indicate an alarm condition exists. The general alarm light shall be turned on by any alarm function. An indicator pilot light on the inner door shall show which of the alarm conditions has caused the exterior general light to be turned on. The light shall turn off when the alarm condition is corrected and the alarm circuit is manually resent, if required.

14. Audible Alarm Horn--The exterior panel mounted audible alarm horn shall be a

weatherproof device to provide an audible signal to indicate an alarm condition exists. The alarm horn shall be a minimum of 80 decibles and be turned on by any alarm function that will turn on the exterior alarm light. The audible alarm shall be silenced by depressing the Alarm Silence push button, located on the inner door. The silence circuit shall automatically reset when the alarm condition is cleared.

15. High Level Alarm--The high level signal from the pump controller shall close on a

low wet well level condition. A Low Level Alarm relay and an oil-tight red pilot light shall be provided to indicate the alarm condition. The general alarm shall turn on to indicate the alarm condition. The low level alarm relay shall also shut down all pumps, should they be running, as a redundant off level control. The general alarm and low level pilot light shall automatically turn off when the low level condition is corrected.



D. Remote Telemetry Equipment-a remote telemetry panel shall be provided. Enclosure to be NEMA 4x or stainless steel enclosure. All PLC I/O connections are to be wired to terminal blocks for field connection to pump station control panel. This equipment must meet GSWSA requirements.

2.02 STRUCTURES A. The pumping station structure shall be constructed in accordance with these specifications

and as shown on the plans. B. Reinforced Concrete Pipe: Reinforced concrete pipe shall conform in all respects to ASTM

Specification C-76, Wall A or B, for reinforced concrete pipe. The pipe wall reinforcing steel should be extended for at least six inches from either end of the pipe so that it may be tied to the reinforcing in the bottom and upper sections of the station. The bottom of the station may be precast with the pipe at the discretion of the Contractor.

C. Precast Manhole Sections: Precast manhole sections used in pumping station construction

shall be as indicated in the plans. D. Watertight Integrity: The station shall be constructed so that all portions below the ground

are completely watertight. The Contractor, at his discretion, may use a bonding agent such as "Weldcrete" to ensure a tight joint between the concrete pipe and the poured concrete sections.

E. Exceptions: Material or equipment not called for in these specifications shall be identified on

the plans. 2.03 ELECTRICAL A. General: The work shall include the furnishing and installing of the conductors, conduit,

boxes, disconnects, and all other material and equipment required that is not furnished as a prefabricated part of the control units for a complete electrical system.

The installation shall comply with the applicable rules of the National Electrical Code and the applicable requirements of the authority having jurisdiction except where otherwise noted on the drawings or specified. All electrical materials shall be new and as approved by the Underwriter's Laboratories, Inc., except as otherwise specified. Defective equipment or equipment damaged in the course of installation or test shall be replaced or repaired in a manner meeting with the approval of the Engineer. Lamps shall be furnished and installed by the Contractor. The drawings indicate the extend and general arrangement of the conduit wiring systems. If any departures from the drawings are deemed necessary by the Contractor, details of such departures and the reasons therefore shall be submitted as soon as practicable and within 30 days after award of the contract to the Engineer for approval. No such departure shall be made without the prior written approval of the Engineer.

B. Applicable Specifications and Standards: The latest issue in effect of the following specifications and standards form a part of these specifications:



1. Federal Specifications J-C-103Cable and wire, rubber insulated J-C-129Cable and wire, thermoplastic insulated W-C-375Circuit breaker, molded case W-C-596 Connector, plug, receptacle W-C-1094Conduit and fittings, rigid, plastic W-F-406 Fittings for cable and conduit W-F-408 Fittings for conduit, metal W-F-791 Fuse, cartridge and plug W-J-800 Junction box, steel W-J-805 Junction box, nonmetallic W-R-00550 Rod, ground W-S-865 Switch, box W-S-890 Switch, snap HH-I-510 Insulation tape, friction HH-I-553 Insulation tape, rubber HH-I-00595Insulation tape, plastic WW-C-00540Conduit, metal, rigid, aluminum WW-C-566 Conduit, metal, flexible WW-C-581 Conduit, metal, rigid, zinc-coated 2. Underwriter's Laboratories, Inc.: Standard for Cabinets and Boxes Standard for Service Equipment Standard for Thermoplastic-Insulated Wires Standard for Rubber-Covered Wire and Cables 3. National Board of Fire Underwriters: National Electrical Code, Standard for Electric Wiring and Apparatus 2.04 OPERATION A. As the water in the wet well reaches the elevation specified on the plans, the liquid level

sensor trips and the lead pump starts and remains on until the water level drops to the elevation specified on the plans.. The liquid level sensor then turns the pump off. When the water level again reaches the lead pump-on level, the alternator switches the operation to the alternate pump.

B. If the level continues to rise after the lead pump is pumping, the lag pump will turn on at a

water surface elevation specified. An alarm will be activated if the level continues to rise to the alarm elevation specified on the plans.

2.05 CONTROLS A. Liquid Level Sensors shall be Milltronic Hydro Ranger.



B. Alternator shall be capable of alternating lead pump on each cycle and deactivated if

desired. PART 3- WORKMANSHIP 3.01 GENERAL A. The construction of the pump will be as shown on the plans or as specified and shall comply

with the manufacturer's installation recommendations. The Contractor shall provide the necessary labor and material to construct the pump station and to make it fully operational as specified.

3.02 TESTS A. Before acceptance by the Owner (operator), the Contractor shall conduct an operating test

for approval. The station shall be demonstrated to operate in accordance with the requirements of these specifications. All necessary gages, instruments, personnel and electric power shall be furnished by the Contractor. Testing shall be witnessed by the Civil Engineer, the Grand Strand Water and Sewer Authority inspector and the SCDHEC inspector.

END OF SECTION


STORM DRAINAGE STRUCTURES, PIPE, AND FITTINGS 334100 - 1

SECTION 334100 STORM DRAINAGE STRUCTURES, PIPE, AND FITTINGS PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Storm drainage piping, fittings, and accessories.

B. Catch basins, junction boxes and drop inlets. 1.2 REFERENCES

A. ANSI/ASTM C76 - Reinforced Concrete Culvert, Storm Drain and Sewer Pipe.

B. American Association of State Highway and Transportation Officials Specification M-196.

C. American Association of State Highway and Transportation Officials Specification M-294-94. 1. 3 RELATED SECTIONS

A. Section 312300 – Trench Excavation and Backfill

B. Section 030000 – Concrete

PART 2 - PRODUCTS 2.1 DRAINAGE PIPE MATERIALS

A. Reinforced Concrete Pipe: ANSI/ASTM C76, Class III, IV, or V concrete pipe with mesh reinforcement and inside nominal diameter as shown on plans.

B. Corrugated Polyethylene Pipe: AASHTO M 294-94, type S or SP and inside nominal diameter

as shown on plans unless otherwise noted.

C. Construction Fabric Pipe Wrap: Shall be Marifi 140 N or approved equal. 2.2 CATCH BASINS, DROP INLETS, JUNCTION BOX FRAMES AND GRATES

A. Basin Lid and Frame: Cast iron construction, as specified on the plans. All grates are to be bicycle safe.



B. Manhole castings shall be cast iron meeting ASTM Serial Designation A48-62, Class 30B.

They shall be "Anti-Rattle" type.

C. Shaft construction to be 8" concrete brick or reinforced precast concrete basin sections, lipped male/female dry joints; nominal size, 3 feet square unless shown otherwise on the plans.

D. Base Pad: Compacted run-of-crusher stone for basins within pavement areas; 6” minimum.

E. All brick or concrete block manholes or catch basins shall have 3/4" grout on outside and

inside to seal and waterproof from ground water. 2.3 JUNCTION BOXES

A. Lid and Frame: Cast iron construction, removable lid, nominal lid and frame diameter of 24 inches as shown on the plans.

B. Shaft construction to be 8" concrete brick or reinforced precast concrete basin sections,

lipped male/female dry joints; nominal size, 3 feet square unless shown otherwise on the plans.

C. Base Pad: Minimum 6” of #57 stone

D. Manholes used as junction boxes shall have the following diameters based upon the largest

size pipe:

15" pipe -- 4 feet 18" pipe -- 5 feet

E. For larger pipes, pre-cast manhole junction boxes must have prior approval of the Engineer.

F. Pre-cast concrete manholes shall meet ASTM Specifications, Serial Designation C478-64T

or latest revision and have "O" ring gasket joints meeting ASTM Specifications, Serial Designation D443-65 or latest revision.

2.4 BRICK

A. Brick shall meet ASTM Serial Designation C26 for common brick, Grade C. 2.5 CEMENT MORTAR JOINTS

A. All concrete pipes shall be laid with cement mortar joints. The mortar mixture shall be one part Portland Cement and two parts clean sand by volume.

B. Only enough water shall be used to make a stiff, workable mortar and no more than 5.5

gallons of water per sack of cement shall be used. 2.6 CONCRETE MATERIALS

A. Portland Cement shall conform to the Concrete sections and the specifications of ASTM, Serial Designation C-150-62 or latest revision.

B. Cement shall be stored in a weather-tight enclosure.



C. Hydrated lime shall meet the specifications of ASTM, Serial Designation C207-49, or latest revision.

D. Fine aggregate shall conform to the following ASTM Specifications, latest revisions:

1. For concrete: Serial Designation C33-66T 2. For masonry mortar: Serial Designation C144-62T

E. Coarse aggregate for concrete shall consist of crushed granite conforming to the current

ASTM Specifications C33. Aggregate shall be cleaned, hard and uncoated.

F. Water for mortar and concrete must not be contaminated by salt, oil, acid or other material which may be harmful.

2.7 REINFORCING STEEL

A. Reinforcing steel shall be of the lengths and sizes shown on the plans.

B. Reinforcing steel shall be of approved deformed typed and meet all requirements of ASTM Standard Specifications for new Billet Steel Reinforcement Bars, Serial Designation A150-62T. Bars will be structural or intermediate grade open hearth steel.

2.8 BACKFILL MATERIALS

A. Reused or imported subsoil as specified in Section 312300 and approved by the Engineer.

B. Type B for any pipe crossing beneath roadways.

C. Type C shall be utilized in areas of poor soil conditions as directed by the Engineer. PART 3 - EXECUTION 3.1 EXAMINATION

A. Contractor shall notify Engineer so the trench cut or excavation base can be verified if it is ready to receive work and excavations, dimensions and elevations are as indicated on drawings.

B. Beginning of installation means acceptance of existing conditions.

3.2 PREPARATION

A. Hand trim excavations to required elevations. Correct over excavation with fill material of fine aggregate.

B. Remove large stones or other hard matter which could damage drainage tile or impede

consistent backfilling or compaction. 3.3 INSTALLATION - PIPE

A. Lay pipe to slope gradients noted on drawings with maximum variation from true slope of 1/8 inch in 10 feet.

B. Increase compaction of each successive lift. Do not displace or damage pipe when

compacting.



C. Storm drainpipe and appurtenant structures shall be installed in accordance with Section

312300.

D. All pipes shall be laid with the bells uphill.

E. Clean the pipe ends and wet before the joint is made.

F. Apply stiff mortar to the lower half of the bell of the pipe already laid and the upper half of the tongue of the pipe to be laid. The joint shall then be made and drawn tight. Bitumastic joints are required for concrete pipe.

G. Additional mortar shall be applied to the outside to fill any unfilled portion of the groove.

H. Backfill shall be done so as not to disturb the mortar joints.

I. Fill must be approved by the Engineer before placement.

J. Spoil from the excavation may not be utilized at these locations unless specifically approved

by the Engineer.

K. In all locations where storm water drainage pipe crosses beneath roadways, select granular fill shall be used to backfill above the pipe.

L. When completed, each pipe line shall show a neat circular bore when lamped.

M. Prior to placing perforated pipe and after the trench has been excavated, place an approved

construction fabric in the trench, place a bed of Class 1 gravel on the fabric, install the perforated pipe on the gravel bed and backfill over pipe with Class 1 gravel and compact. Overlap fabric over pipe, backfill and compact remainder of trench with select material.

3.4 INSTALLATION - CATCH BASINS, DROP INLETS AND JUNCTION BOXES

A. Form bottom of excavation clean and smooth to correct elevation.

B. Form and place cast-in-place concrete base pad with provision for storm sewer pipe end sections.

C. Establish elevations and pipe inverts for inlets and outlets as indicated.

D. Mount lid and frame level in grout, secured to top cone section to elevation indicated.

E. Inverts shall be smooth with uniform slopes from invert to invert.

F. Brick structures shall have every fifth course of brick laid as headers. Other courses shall be

stretchers.

G. All mortar joints shall be full.

H. Inside mortar joints shall be rubbed full and struck.

I. The inside and outside of the brick work shall be covered with 0.5 inches of mortar. 3.5 FIELD QUALITY CONTROL



A. Testing shall be in accordance with General Provisions. 3.6 PROTECTION

A. Protect pipe from damage or displacement until backfilling operation is in progress.

B. Protect drainage piping and catch basins from siltation during construction with the use of filter fabric.

END OF SECTION

Documents

Coastal Carolina University Architect’s Project No. 12.131 ... · Coastal Carolina University Architect’s Project No. 12.131.00 New Student Housing Construction (Elvington Property)