SECTION_33_11_00_(003).docx

SECTION 33 11 00

WATER DISTRIBUTION

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM A536 (2014) Standard Specification for Ductile Iron Castings

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C110/A21.10 (2012) Ductile-Iron and Gray-Iron Fittings for Water

AWWA C111/A21.11 (2012) Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

AWWA C115/A21.15 (2011) Flanged Ductile-Iron Pipe With Ductile-Iron or Gray-Iron Threaded Flanges

AWWA C151/A21.51 (2009) Ductile-Iron Pipe, Centrifugally Cast, for Water

AWWA C500 (2009) Metal-Seated Gate Valves for Water Supply Service

AWWA C502 (2005) Dry-Barrel Fire Hydrants

AWWA C508 (2009) Swing Check Valves for Waterworks Service 2” through 24”

AWWA C509 (2009) Resilient-Seated Gate Valves for Water Supply Service

AWWA C550 (2013) Protective Interior Coating for Valves and Hydrants

AWWA C600 (2010) Installation of Ductile-Iron Water Mains and Their Appurtenances

AWWA C605 (2013) Underground Installation of Polyvinyl Chloride (PVC) Pressure Pipe and Fittings for Water

AWWA C651 (2005; Errata 2005) Standard for Disinfecting Water Mains .

AWWA C900 (2007; Errata 2008) Polyvinyl Chloride (PVC) Pressure Pipe, and Fabricated Fittings, 4 In. Through 12 In., for Water Distribution

AWWA M23 (2002, 2nd Ed) Manual: PVC Pipe – Design and Installation

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 24 (2013) Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 291 (2013) Recommended Practices for Flow Testing and Marking of Fire Hydrants

UNDERWRITERS LABORATORIES (UL)

UL 246 (2011; Reprinted Feb 2011) Hydrants for Fire-Protection Service

UL 262 (2004; Reprinted June 2013 Standard for Gate Valves for Fire-Protection Service

0. SUBMITTALS

Contractor shall submit, “For Information Only” manufacturer’s certificates that the following material meets the requirements of the specifications.

Piping Materials Water service line piping, fittings, joints, valves, and coupling Hydrants Valve boxes Hydrant Check Valve

1.2.1 Copy of the following, For Information Only”.

a. State of Georgia Utility Foreman License

b. State of Georgia Utility Manager License

c. State of Georgia Utility Contractors License

1.3.CONTRACTOR’S REQUIREMENTS

1.3.1 Contractors Qualifications: Contractor is required to hold a current State of Georgia Utility Contractor’s license and a current GSWCC Level (1A) Erosion Control certification

1.3.2 Key Personnel: Government requires that the on-site Superintendent hold a current State of Georgia Utility Foreman license and the on-site personnel working on piping system hold current State of Georgia Utility Managers license.

1.4 DELIVERY, STORAGE, AND HANDLING

1.4.1 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, fittings, valves and hydrants free of dirt and debris.

1.4.2 Handling

Handle pipe, 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 repairs if coatings or linings are damaged. Do not place any other material or pipe inside a pipe or fitting after the coating has been applied. Carry, do not drag pipe to the trench. Use of pinch bars and tongs for aligning or turning pipe will be permitted only on the bare ends of the pipe. The interior of pipe and accessories shall be thoroughly cleaned of foreign matter before being lowered into the trench and shall be kept clean during laying operations by plugging or other approved method. Before installation, the pipe shall be inspected for defects. Material found to be defective before or after laying shall be replaced with sound material without additional expense to the Government. Store rubber gaskets that are not to be installed immediately, under cover out of direct sunlight.

1.4.2.3 Miscellaneous Plastic Pipe and Fittings

Handle Polyvinyl Chloride (PVC) pipe and fittings in accordance with the manufacturer's recommendations. Store plastic piping and jointing materials that are not to be installed immediately under cover out of direct sunlight.

PART 2 PRODUCTS

2.1 WATER DISTRIBUTION (CONNECTION) MAIN MATERIALS

2.1.1 Piping Materials

2.1.1.1 Ductile-Iron Piping

a. Pipe and Fittings: Pipe, AWWA C151/A21.51. Flanged pipe, AWWA C115/A21.15. Fittings, AWWA C110/A21.10; fittings with push-on joint ends conforming to the same requirements as fittings with mechanical-joint ends, except that the bell design shall be modified, as approved, for push-on joint. 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.

b. Joints and Jointing Material:

(1) Joints: Joints for pipe and fittings shall be mechanical joints unless otherwise indicated. Provide mechanically coupled type joints using a sleeve-type mechanical coupling where indicated. Joints made with sleeve-type mechanical coupling may be used in lieu of push-on joint, subject to the limitations specified in paragraph entitled "Sleeve-Type Mechanical Couplings."

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

(3) Mechanical Joints: Dimensional and material requirements for pipe ends, glands, bolts and nuts, and gaskets, AWWA C111/A21.11.

(4) Sleeve-Type Mechanical Coupled Joints: As specified in paragraph entitled "Sleeve-Type Mechanical Couplings."

2.1.1.2 Polyvinyl Chloride (PVC) Plastic Piping

a. Pipe and Fittings: Pipe, AWWA C900, shall be plain end or gasket bell end, with cast-iron-pipe-equivalent OD.

b. Fittings for PVC pipe: Fittings shall be gray iron or ductile iron, AWWA C110/A21.10 standard thickness. Fittings with push-on joint ends shall conform to the same requirements as fittings with mechanical-joint ends, except that bell design shall be modified, as approved, for push-on joint suitable for use with PVC plastic pipe specified in this paragraph.

c. Fittings and specials required for closures, curves, bends of steel.

2.1.2 Valves, Hydrants, and Other Water Main Accessories

2.1.2.1 Gate Valves on Buried Piping

AWWA C500, AWWA C509, or UL/FM 262. Unless otherwise specified, valves conforming to AWWA C500 shall be nonrising stem type with double-disc gates and mechanical-joint ends or push-on joint ends as appropriate for the adjoining pipe. Materials for UL 262 valves shall conform to the reference standards specified in AWWA C500. Valves shall open by counterclockwise rotation of the valve stem. Stuffing boxes shall have 0-ring stem seals.

2.1.2.2 Fire Hydrants

a.Dry-Barrel Type Fire Hydrants:, AWWA C502 and UL/FM 246, "Base Valve" design, shall have 6 inch inlet, 5 1/4 inch valve opening, one 4 1/2 inch pumper connection, and two 2 1/2 inch hose connections. Size and shape of operating nut, cap nuts, and threads on hose and pumper connections shall be as specified in AWWA C502. Hydrants shall have frangible sections as mentioned in AWWA C502. The traffic type hydrant shall have special couplings joining upper and lower sections of hydrant barrel, and upper and lower sections of hydrant stem, and shall be designed to have the special couplings break from a force not less than that which would be imposed by a moving vehicle.

b. Fire hydrants shall be Mueller Centurian A-423 or equal, US Pipe 5 ¼” or equal, or Dresser M&H style 929 or equal.

2.1.2.4 Valve Boxes

Provide a valve box for each gate valve as shown on drawings. Valve boxes shall be of precast concrete of a size suitable for the valve on which it is to be used and shall be adjustable.

2.1.2.5 Tracer Wire for Nonmetallic Piping

Provide bare copper or aluminum wire not less than 0.10 inch in diameter in sufficient length to be continuous over each separate run of nonmetallic pipe.

2.1.2.6 Hydrant Security Check Valve

Fire hydrants should be equipped with a resilient seated check valve. Valve shall be manufactured to all testing and performance standards of AWWA C508 AND AWWA C550. Valves shall be rated for 250 psi water working pressure and tested at 500 PSI hydrostatic pressure. Valve shall be a stand alone unit able to be positively restrained to any mechanical joint fire hydrant shoe. Check valve shall be ductile iron ASTM Standard A536 (70-50-05), with NSF approved fusion bonded epoxy coating (interior and exterior). The valve shall incorporate a stainless steel spring that hastens positive closure and prevents water hammer. The valve shall be lead free, with no exposed lead bearing surface. The check valve shall have an unobstructed waterway. No reduction of port or redirection of flow will be allowed. Valve shall incorporate integral positive restraint connections to maintain a restrained connection between the fire hydrant and the gate valve. All fasteners to be Type 304 stainless steel.

PART 3 EXECUTION

3.1 INSTALLATION OF CONNECTION MAIN PIPELINES

3.1.1 General Requirements for Installation of Pipelines: These requirements shall apply to all pipeline installation except where specific exception is made in the "Special Requirements..." paragraphs.

3.1.1.2 Earthwork

Perform earthwork operations in accordance with Section 31 23 00.00 20.

3.1.1.3 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 any other water line material into trenches. Cut pipe in a neat workmanlike manner 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 the bell end pointing in the direction of laying. Grade the pipeline in straight lines; avoid the formation of dips and low points. Support pipe at proper elevation and grade. Secure firm, uniform support. Wood support blocking will not be permitted. Lay pipe so that the full length of each section of pipe and each fitting will rest solidly on the pipe bedding; excavate recesses to accommodate bells, joints, and couplings. Provide anchors and supports where indicated and where necessary for fastening work into place. Make proper provision for expansion and contraction of pipelines. Keep trenches free of water until joints have been properly made. At the end of each work day, close open ends of pipe temporarily with wood blocks or bulkheads. Do not lay pipe when conditions of trench or weather prevent installation.

3.1.1.4 Installation of Tracer Wire

Install a continuous length of tracer wire for the 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.

3.1.1.5 Connections to Existing Water Lines

Make connections to existing water lines after approval is obtained and with a minimum interruption of service on the existing line. Make connections to existing lines under pressure in accordance with the recommended procedures of the manufacturer of the pipe being tapped. Provide corporation stops, tapping sleeves and tapping valves, and all other material, labor, and equipment necessary for the connection. .

3.1.2 Special Requirements for Installation of Water Mains

3.1.2.1 Installation of Ductile-Iron Piping

Unless otherwise specified, 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.

a. Jointing: Make push-on joints with the gaskets and lubricant specified for this type joint; assemble in accordance with the applicable requirements of AWWA C600 for joint assembly. 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.

b. Allowable Deflection: The maximum allowable deflection shall be as given in AWWA C600. If the alignment requires deflection in excess of the above limitations, special bends or a sufficient number of shorter lengths of pipe shall be furnished to provide angular deflections within the limit set forth.

c. Pipe Anchorage: Provide concrete thrust blocks for pipe anchorage, except where metal harness is indicated. Concrete 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. Metal harness shall be in accordance with the requirements of AWWA C600 for thrust restraint, using tie rods and clamps as shown in NFPA 24.

3.1.2.2 Installation of PVC Plastic Water Main Pipe

Installation of PVC Plastic Water Main Pipe and Associated Fittings: Unless otherwise specified, install pipe and fittings in accordance with paragraph entitled "General Requirements for Installation of Pipelines"; with the requirements of AWWA M23 for laying of pipe, joining PVC pipe to fittings and accessories, and setting of hydrants, valves, and fittings.

a. Jointing: Make push-on joints with the elastomeric gaskets specified for this type joint, using either elastomeric-gasket bell-end pipe or elastomeric-gasket couplings. For pipe-to-pipe push-on joint connections, use only pipe with push-on joint ends having factory-made bevel; for push-on joint connections to metal fittings, valves, and other accessories, cut spigot end of pipe off square and re-bevel pipe end to a bevel approximately the same as that on ductile-iron pipe used for the same type of joint. 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 AWWA M23 for laying the pipe. Assemble push-on joints for connection to fittings, valves, and other accessories in accordance with the requirements of AWWA M23 for joining PVC pipe to fittings and accessories. Make compression-type joints/mechanical joints with the gaskets, glands, bolts, nuts, and internal stiffeners previously specified for this type joint; assemble in accordance with the requirements of AWWA M23 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 compression-type joint/mechanical-joint connections and do not re-bevel. Assemble joints made with sleeve-type mechanical couplings in accordance with the recommendations of the coupling manufacturer using internal stiffeners as previously specified for compression-type joints.

b. Offset: Maximum offset in alignment between adjacent pipe joints shall be as recommended by the manufacturer and approved by the Contracting Officer, but shall not exceed 5 degrees.

c. Pipe Anchorage: Provide concrete thrust blocks for pipe anchorage, except where metal harness is indicated. Thrust blocks shall be in accordance with the requirements of AWWA C502 for reaction or thrust blocking.

d. Fittings: Install in accordance with AWWA C605.

3.1.2.3 Installation of Valves and Hydrants

a. Installation of Valves: Install gate valves, AWWA C500 and UL 262, in accordance with the requirements of AWWA C600 for valve-and-fitting installation and with the recommendations of the Appendix ("Installation, Operation, and Maintenance of Gate Valves") to AWWA C500. Install gate valves, AWWA C509, in accordance with the requirements of 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 accordance with the recommendations for appurtenance installation in AWWA M23, Chapter 7, "Installation. Make and assemble joints to gate valves as specified for making and assembling the same type joints between pipe and fittings.

b. Installation of Hydrants: Install hydrants in accordance with AWWA C600 for hydrant installation and as indicated. Make and assemble joints as specified for making and assembling the same type joints between pipe and fittings. Install hydrants with the 4 1/2 inch connections facing the adjacent paved surface. If there are two paved adjacent surfaces, contact the Contracting Officer for further instructions.

c. Bid item in contract is for the removal of existing and installation on new fire hydrant and valve with up to 10’ of connection pipe between fire hydrant and valve. If additional water line piping or connection pipe is required a Non Pre-price item will be added to D.O. to cover this cost.

3.1.2.4 Classification of Hydrants

Class AA – rated capacity of 1,500 GPM or greater Class A – rated capacity of 1,000-1499 GPM Class B – rated capacity of 500-999 GPM Class C – rated capacity of less than 500 GPM

3.1.3 Disinfection

Prior to disinfection, obtain Contracting Officer approval of the proposed method for disposal of waste water from disinfection procedures. Disinfect new water piping and existing water piping affected by Contractor's operations in accordance with AWWA C651. Fill piping systems with solution containing minimum of 50 parts per million of available chlorine and allow solution to stand for minimum of 24 hours. Flush solution from the systems with domestic water until maximum residual chlorine content is within the range of 0.2 and 0.5 parts per million, or the residual chlorine content of domestic water supply. Obtain at least two consecutive satisfactory bacteriological samples from new water piping, analyze by a certified laboratory, and submit the results prior to the new water piping being placed into service. Disinfection of systems supplying nonpotable water is not required. Prior to placing into service, the Contractor, through the COR, will coordinate with Environmental Health, (912) 435-5721 or (921) 257-1220, for bacteriological testing to ensure drinking water lines have been super-chlorinated with positive chlorine residuals and are free of any bacteria.

2.1.1 Colors and Tints

After installation the contractor shall flow test new hydrant. Fire hydrants shall be painted in accordance with the National Fire Protection Association (NFPA). Body of hydrants shall be painted with a minimum of a prime coat and two coats of enamel paint. Color shall be chrome yellow. Bonnet and caps shall be painted in accordance to NFPA-291, Chapter 3 and based on flow test. Bonnet flange shall be painted with white reflective paint. Colors are as follows:

Colors shall be as selected from manufacturer's standard colors and approved by the NFPA. Tinting of shall be done by the manufacturer. The color of the undercoats shall vary slightly from the color of the next coat.

3.2 FIELD QUALITY CONTROL

3.2.1 Field Tests and Inspections

Prior to hydrostatic testing, obtain Contracting Officer approval of the proposed method for disposal of waste water from hydrostatic testing. The Contracting Officer 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 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.

3.2.2 Testing Procedure

3.2.2.1 Test water mains and water service lines in accordance with the applicable specified standard, except for the special testing requirements given in paragraph entitled "Special Testing Requirements." Test ductile-iron water mains in accordance with the requirements of AWWA C600 for hydrostatic testing. The amount of leakage on ductile-iron pipelines with mechanical-joints or push-on joints shall not exceed the amounts given in AWWA C600; no leakage will be allowed at joints made by any other method. Test PVC plastic water mains in accordance with the requirements of AWWA M23 for pressure and leakage tests. Test steel water mains in accordance with applicable requirements of AWWA C600 for hydrostatic testing. The amount of leakage on steel pipelines with rubber-gasketed bell-and-spigot joints shall not exceed 20 gallons per 24 hours per inch of pipe diameter per mile of pipeline; no leakage will be allowed at joints made by any other method. Repair of welded joints to stop leakage shall be done by welding only. Test water service lines in accordance with applicable requirements of AWWA C600 for hydrostatic testing. No leakage will be allowed at compression type or plastic pipe joints.

3.2.2.2 Flow test hydrants in accordance with NFPA 24.

3.3 CLEANUP

Upon completion of the installation of water lines, and appurtenances, all debris and surplus materials resulting from the work shall be removed.