2 of 4 IFB 029_46_White Sulphur Phase II.pdf

134 | P a g e

Attachment 3 - City of Gainesville Standard Specifications for Water

Mains, Sanitary and Storm Sewers – June 2025

STANDARD SPECIFICATIONS FOR

WATER MAINS, SANITARY SEWERS,

AND STORM SEWERS

CITY OF

GAINESVILLE, GEORGIA

JUNE 2025

DEPARTMENT OF WATER RESOURCES

757 Queen City Parkway

Gainesville, GA 30501

CITY OF GAINESVILLE

STANDARD SPECIFICATIONS

TABLE OF CONTENTS

SECTION 100 – WATER MAINS AND ACCESSORIES

PART 1 GENERAL

1.01 Scope

1.02 Related Work

1.03 Applicable Specifications and Standards

PART 2 MATERIALS

2.01 General

2.02 Ductile Iron Pipe (DIP)

2.03 Copper Tubing

2.04 Gate Valves

2.05 Butterfly Valves

2.06 Check Valves

2.07 Tapping Sleeves and Valves

2.08 InsertaValves

2.09 Valve Markers

2.10 Corporation Stops and Curb Stops

2.11 Fire Hydrants

2.12 Valve Boxes, Covers & Riser Extensions

2.13 Retainer Glands

2.14 Locator Wire

2.15 Warning Tape

2.16 Casing Pipe

2.17 Stainless Steel Casing Spacers

2.18 Bedding Materials

2.19 Concrete Thrust Blocking

2.20 Meter Boxes

2.21 Materials for Structures

PART 3 EXECUTION

3.01 Pipeline Installation

3.02 Connections to Existing Water Mains

3.03 Hydrant Installation

3.04 Valve and Fitting Installation

3.05 Jack and Bore

3.06 Free Boring

3.07 Water Meters and Service Lines

3.08 Locator Wire

3.09 Warning Tape

3.10 Valve Markers

3.11 Field Pressure Testing

3.12 Disinfecting Pipelines

3.13 Guarantee Against Taste, Odor or Color

3.14 Final Acceptance and As-Built Drawings

SECTION 200 – SANITARY SEWER SYSTEM

PART 1 GENERAL

1.01 Scope

1.02 Related Work

1.03 Applicable Specifications and Standards

PART 2 MATERIALS

2.01 General

2.02 Ductile Iron Pipe (DIP)

2.03 Polyvinyl Chloride Pipe (PVC)

2.04 High Density Polyethylene Pipe (HDPE)

2.05 Casing Pipe

2.06 Stainless Steel Casing Spacers

2.07 Materials for Manholes

2.08 Adapter Donuts & Couplings

2.09 Bedding and Backfill

2.10 Concrete for Pipe Encasement, Encasement Collars and Force Main Blocking

2.11 Air Release and Air Vacuum Valves

2.12 Utility Marker Signs

2.13 Locator Wire

2.14 Warning Tape

2.15 Sewage Lift Station Materials

PART 3 EXECUTION

3.01 Pipeline Installation

3.02 Jack and Bore

3.03 Manhole Installation

3.04 Adjustment Risers for Manhole Frames/Covers

3.05 Drop Manholes

3.06 Service Pipe

3.07 Sewage Force Mains

3.08 Locator Wire

3.09 Warning Tape

3.10 Air Relief Valves

3.11 Sewer Line Testing

3.12 Manhole Testing

3.13 Sewage Lift Station Installation

3.14 Fixed Assets

3.15 Video Surveillance

3.16 Final Acceptance and As-Built Drawings

SECTION 300 – STORMWATER SEWER SYSTEM

1.01 Scope

1.02 Related Work

1.03 Applicable Specifications and Standards

PART 2 MATERIALS

2.01 General

2.02 Storm Drainpipe and Structures – Within R/W

2.03 Storm Drainpipe and Structures – Outside R/W

2.04 Pipe End Treatments

2.05 Bedding and Backfill

2.06 Soil and Rock Structures

2.07 Open Channel Conveyance

PART 3 EXECUTION

3.01 Pipeline Installation

3.02 Video Surveillance

3.03 Final Acceptance and As-Built Drawings

SECTION 400 – EXCAVATION, TRENCHING AND BACKFILLING

PART 1 GENERAL

1.01 Scope

1.02 Density Test

1.03 Applicable Specifications and Standards

PART 2 MATERIALS

2.01 Sheeting & Shoring Materials

2.02 Backfill

PART 3 EXECUTION

3.01 Earth Excavation

3.02 Rock Excavation

3.03 Sheeting and Shoring

3.04 Bedding and Backfill

3.05 Subsurface Obstructions

3.06 Road Crossings

SECTION 500 – SITE PREPARATION, RESTORATION AND RELATED WORK

1.01 Scope

1.02 Project Photographs

PART 2 MATERIALS

2.01 General

PART 3 EXECUTION

3.01 Clearing and Grubbing

3.02 Temporary Erosion and Sedimentation Control

3.03 Construction Within State Highway, County Roads and City Streets

3.04 Removing and Replacing Pavement

3.05 Railroad Crossings

3.06 Stream and Ditch Crossings

3.07 Cleaning and Maintenance

3.08 Grassing

3.09 “Off -Site” Utility Extensions

3.10 Temporary Restroom Accommodations

3.11 Disposal of Refuse

SECTION 600 – STANDARD DETAILS

PART 1 GENERAL

1.01 Scope

PART 2 MATERIALS (NOT USED)

PART 3 EXECUTION (NOT USED)

SECTION 700 – APPENDIX

A-I Related Offices A-II Referenced Codes and Standards A-III Alternate Materials

END OF SECTION

WATER MAINS AND ACCESSORIES

SECTION 100

1.01 SCOPE

A. The Contractor shall furnish all services, labor, materials (unless otherwise agreed upon in writing), tools, and equipment necessary to construct the water mains and perform all work specified or indicated on the drawings. These specifications and details cover water mains and water service connections and all related appurtenances.

B. The water mains shall be installed in the locations indicated on the drawings or as otherwise directed by the City of Gainesville. All water system piping shall be supported, anchored and restrained as necessary.

C. The Contractor shall arrange the work so as to minimize interference with pedestrian and vehicular traffic, and to avoid interruption of service of any existing utilities. The Contractor shall furnish and maintain suitable alternate ingress/egress or other means of access to or across interrupted streets, alleys, driveways and walkways, where necessary. The Contractor shall call the Utilities Protection Center “Call Before You Dig”, telephone number 1-800-282-7411, or 811, before initiating excavation activities.

D. The Contractor shall be responsible for removing all water from excavations and trenches whether from surface or ground sources.

E. The Contractor shall guarantee all material and workmanship for a period of one (1) year from the date of final acceptance of the work. If during this period any material or workmanship, etc., proves defective, the Contractor shall repair same at his own cost and expense and to the satisfaction of the City.

F. In addition to the responsibility of the Contractor for remedying observed defects in his work during the guarantee period, the Contractor shall also reimburse the City for all expenses incurred in investigations to assure the City that the completed work is in accordance with these specifications.

G. City of Gainesville backflow prevention requirements are contained in the “Specifications and Details for Installation of Backflow Assemblies” as provided by the Gainesville Department of Water Resources Backflow Prevention Section. The Backflow Prevention office may be reached at 770-297-5443.

H. All water use on construction sites requires rental of a City of Gainesville DWR hydrant meter and integrated backflow device. Contractors are NOT allowed to use water from fire vaults during construction.

1.02 RELATED WORK

A. Section 400: Excavation, Trenching, and Backfilling.

B. Section 500: Site Preparation, Restoration, and Related Work.

1.03 APPLICABLE SPECIFICATIONS AND STANDARDS

The latest editions of the following specifications, standards and publications setting minimum requirements for quality, safety and performance of work and materials form a part of this specification as though fully repeated herein.

ASTM American Society of Testing Materials ANSI American National Standards Institute AWWA American Water Works Association

PART 2 MATERIALS

2.01 GENERAL

A. Materials to be incorporated into the work shall be new and unused and shall conform to all applicable requirements of these specifications. All materials shall be manufactured in the U.S.A., unless specified or approved otherwise. Submittal and approval of all materials, shop drawings or samples shall be in conformance with these specifications. Any materials installed prior to approval by the City will be subject to rejection and will be removed at the Contractor’s expense.

B. All water mains shall be 8-inch ductile iron pipe or larger, except after the last hydrant on a street cul-de-sacs, which may be 6-inch ductile iron pipe as shown in the standard detail. Water service lines on the City of Gainesville’s side of the water meter shall be copper tubing.

C. Acceptance will be based on inspection and the manufacturer’s written certification that the pipe, fittings and appurtenances were manufactured and tested in accordance with the applicable standards.

D. Any pipe, fittings and appurtenances used in the installation or repair of water mains or services shall be lead-free and shall comply with the latest edition of the Safe Water Drinking Act (SWDA).

2.02 DUCTILE IRON PIPE (DIP)

A. Pipe shall be manufactured by American Cast Iron Pipe Company, U.S. Pipe, McWane Pipe Company or approved equal.

B. Ductile iron pipe shall conform to AWWA C151 (ANSI A21.5) and shall be a minimum of pressure Class 350 for pipe sizes 16-inch and less; and pressure Class 250 for pipe sizes 20-inch and greater, unless otherwise specified or shown on the drawings. Sizes will be as shown.

C. All pipe shall be furnished in nominal lengths of 18 to 20 feet. Pipe and fittings shall be cement lined in accordance with AWWA C110 with rated working pressure of 250 psi.

D. Fittings shall be manufactured by American Cast Iron Pipe Company, U.S. Pipe, Union Foundry, Sigma, Star Pipe or approved equal.

E. Pipe and fittings shall be furnished with a bituminous outside coating and an interior seal coat. Zinc coated pipe is also acceptable when corrosive conditions require it.

F. Fittings shall be cast from ductile iron and conform to ANSI Specifications A21.10 (AWWA C110) or ANSI Specification A21.53 (AWWA C153). Fittings shall have standard mechanical or flanged joints as called for or shown on the construction plans. Mechanical joint fittings for size 3-inch through 16-inch pipe shall be Class 350 ductile iron. Mechanical joint fittings for size 20-inch though 48-inch pipe shall be Class 250 ductile iron.

G. Fittings may be furnished with a 6-mil minimum nominal thickness fusion bonded epoxy coating conforming to ANSI/AWWA C550 AND C116/a21.16 in lieu of bituminous coating and cement lining.

Weights of fittings shall conform strictly to the requirements of ANSI specifications.

H. Joints shall be push-on type for pipe and standard mechanical joints for fittings with the exception of hydrant fittings. Fittings for bends and hydrants shall be mechanical joint with retainer glands. Hydrant tees used in lieu of retainer glands and harness rods on fire hydrants shall be equal to ACIPCO A10180 or U.S. Pipe U-592. Anchor couplings used in lieu of retainer glands and harness rods on fire hydrant leads shall be American A-10895 or approved equal. Joints shall conform to AWWA C111.

I. Provide and install the appropriate gaskets, nuts, and bolts for mechanical joints. Nuts and bolts shall be stainless steel with American Standard Regular hexagonal dimensions, all as specified in ANSI B17.2.

All bolts and all nuts shall be threaded in accordance with ANSI B1.1, Coarse Thread Series, Class 2A and 2B fit. Mechanical joint glands shall be ductile iron.

J. When flanged joints are indicated, provide gaskets for flange joints made of 1/8-inch thick cloth reinforced rubber. Gaskets shall be full-faced type.

K. Provide bolts for flange connections. Bolts shall be stainless steel with American Standard Regular unfinished square or hexagon heads. Nuts shall be stainless steel with American Standard Regular hexagonal dimensions, all as specified in ANSI B17.2. All bolts and nuts shall be threaded in accordance with ANSI B1.1, Course Thread Series, Class 2A and 2B fit.

2.03 COPPER TUBING

A. Copper tubing shall be ASTM B88, Type K. Fittings shall be brass with compression connection inlets and outlets and shall conform to ANSI B16.26.

B. Where required, adapters shall be brass ANSI B16.18. Unions shall be cast bronze. Joints shall be compression type.

2.04 GATE VALVES

A. Gate valves 3-inch and larger shall be resilient seat wedge type and shall conform to the specifications of the American Water Works Association, Designation C515, latest edition, rated for 250 psi minimum working pressure. Gate valves shall be equipped with “O” ring stem seals above and below stem thrust collar. Gate valves for use on mechanical joint ductile iron pipe shall have manufacturer’s standardized mechanical joint ends. The gate valve body and bonnet shall be ductile iron and shall be fusion bonded, interior and exterior, with epoxy coating which conforms to AWWA C550, latest edition. All parts of the valve in the water column (shaft and nut) on gate valves 16-inch and larger should be made of stainless-steel minimum grade 304.

B. Ductile iron gate valves shall have body and bonnet minimum thickness as follows:

Valve Diameter

(I )

Minimum Metal Thickness (In)

4 0.31 6 0.32 8 0.34 12 0.38 16 0.50

C. Water mains in which the valves are installed shall be tested at 250 psi as specified and the valve must remain watertight under this pressure in each direction.

D. Valves shall open counterclockwise; shall be designed for vertical installation; shall be the non-rising stem type; and shall have a 2-inch square operating nut.

E. Valves shall be equipped with valve boxes. Provide extension stem when depth to operating nut is greater than 4 feet below ground surface. Extension shall bring the operating nut to within 12-inches of ground surface.

F. All gate valves shall be manufactured by Mueller, American-Flow Control or approved equal.

2.05 BUTTERFLY VALVES

Butterfly valves shall be resilient seated, short body design and shall conform to AWWA C504 latest edition.

Valves shall be Class 250 (250-psi, bi-directional, shut-off rating, 500-psi body hydrostatic shell test, fusion bonded epoxy coated interior, exterior, and maximum line velocity of 16 feet per second). Valves shall be Av- Tek DEX or approved equal. Certified test results shall be furnished with each valve.

2.06 CHECK VALVES

Check valves shall be hinged, swing-disc type with ductile iron body and bronze or bronze-filled disc. Valves shall be designed for a rated working pressure of 175 psi and a 350 psi hydrostatic test pressure for structural soundness. Valves shall be equipped with a ½-inch stopcock at the high point of the valve for bleeding air from the line. Check valves shall be gravity operated with flanged ends and shall be manufactured by Mueller or approved equal.

2.07 TAPPING SLEEVES AND VALVES

Tapping sleeves shall be cast or ductile iron of the split-sleeve, mechanical joint type. Valves shall be resilient seat gate valves sizes 4-inch to 24-inch furnished in accordance with the specifications in Section 1, Part 2, 2.05 Gate Valves with a flanged connection to the tapping sleeve with full-faced gasket and a mechanical joint connection to the branch pipe. Tapping valves shall be Mueller Model T-2362 sizes 4-inch to 12-inch, or Model T-2361 sizes 14-inch to 24-inch, American Series 2800-RW sizes 4-inch to 24-inch. Tapping sleeves shall be Mueller Model H-615 sizes 4-inch to 24-inch, American Series 2800-C sizes 4-inch to 24-inch.

2.08 INSERTAVALVES

Romac InsertaValves are allowed. They shall only be installed by manufacturer certified installers, per manufacturer’s installation instructions, and under supervision of City distribution and collection personnel.

Insertion valves shall be manufactured by Romac Industries, Inc or approved equal.

2.09 VALVE MARKERS

Valve markers shall be 4 feet long, 4-inch x 4-inch pre-cast concrete posts, reinforced with 1 #4, 60-ksi rebar.

They shall have a “V” stamped on one side.

2.10 CORPORATION STOPS AND CURB STOPS

A. Corporation stops shall have a tapered Mueller thread inlet and compression outlet. All ¾ -inch and 1-inch corporation stops shall be Cambridge Brass Series 301 Ball Style, Muller Catalog No. H-15008 or Ford Model F1000G, or A.Y. McDonald Model 4701T. All 1-1/2-inch and 2-inch corporation stops shall be Cambridge Brass Series 301 Ball Style, Mueller Catalog No. 15013, Ford Model FB 1000G or A.Y.

McDonald Model 4701T.

B. Curb stops for water service connections shall have a compression connection on one end and inside Iron Pipe Thread (I.P.T.) on the other end, full port ball valve. Water service curb stops shall be Cambridge Brass Series 202, Mueller Catalog No. H-15172, Mueller Catalog No. B-25170, Ford Catalog No. B41 Series or A.Y. McDonald Model 6102WT. Ball style curb stops shall include integral lock wings as required.

C. Curb stops for 2-inch blow-off assembles shall have inside I.P.T. on both ends, full port ball valve. They shall be Cambridge Brass Series 202, Mueller Catalog No. B20283, Ford Catalog No. B11-777 or A.Y.

McDonald 6101.

2.11 FIRE HYDRANTS

A. General

1. Fire hydrants shall be American-Darling Mark 73-5, Mueller Super Centurion A421 or City approved equal.

2. All fire hydrants shall be new and unused and meet or exceed the requirements of AWWA C502. Rated working pressure shall be 250 psi, with test pressure 500 psi. Hydrants shall be dry-barrel, post type construction, closing with and opening against the inlet pressure. Hydrant main valve closure shall be of the compression type. The valve opening shall not be less than 4-1/2-inches.

3. Hydrant shall be of the Mechanical Joint (MJ), Alpha Joint (AJ) or Aquagrip system type.

4. Hydrants are to be certified to NSF/ANSI Standard 61 and NSF/ANSI 372.

5. In the event of a traffic accident, the hydrant barrel shall break away from the standpipe at a point above ground and in a manner which will prevent damage to the barrel and stem, preclude opening of the valve, and permit rapid and inexpensive restoration without digging or cutting off the water.

6. The means for attaching the barrel to the standpipe shall permit 360-degree rotation.

7. All working parts, including the seat ring shall be removable through the top without disturbing the barrel of the hydrant. The minimum burial depth shall be 4.5 feet. Only one (1) extension kit per hydrant shall be allowed where necessary to bring an existing hydrant to the proper elevation. Extensions shall be installed in accordance with the manufacturer’s recommendations. The centerline of the 2-1/2-inches connections shall be a minimum of 18-inches above finished grade. Any hydrant repair parts or extension kits purchased must be made by the original equipment manufacturer (OEM). Universal and/or off-brand parts not backed by the manufacturer are not permitted.

8. Hydrants shall be non-freezing design and provided with a simple, positive and automatic drain, which shall be fully closed whenever the main valve is opened 3 full rounds. If the drain is of the valve facing design, rivets are not permitted to hold the facing and must be of a stainless steel 18-8 316 series or bronze.

9. The standpipe shall have a bury mark that is forged, wielded or grooved. Bury mark constructed with a paint mark is not permitted.

10. New hydrants with a bury depth greater than 6 feet shall have a hydrant valve located in the vertical riser pipe a maximum of 4 feet below the finished grade. Deep bury hydrants shall have the Vertical Alpha Restraint Joint by American Flow Control or approved equal. Refer to the Standard Details.

B. Hydrant Components

1. Working Parts - Unless otherwise noted, hydrants shall have all working parts of bronze (operating nut, pumper and hose nozzles, drain and seat rings, upper valve plate and drain hole bushings, etc.).

Valve seat ring shall be bronze and shall screw into a bronze retainer. Main Valve Seat - The main valve seat shall be of bronze and its assembly into the hydrant shall involve bronze-to-bronze thread engagement. Two "C" ring seals shall be provided as a positive pressure seal between the bronze seat ring and the shoe. The valve assembly pressure seals shall be obtained without the employment of torque compressed gaskets. The hydrants shall be designed to allow the removal of the operating parts through the hydrant barrel by means of a single disassembly wrench without excavating.

2. Drains - Hydrants shall have a minimum of two (2) internal bronze lined drain ports in the hydrant seat and four (4) outlets in the hydrant drain ring directing water from the main valve assembly to the exterior of the hydrant. Hydrant drains shall close completely after no more than 3 turns of the operating nut. The drain mechanism shall be designed to operate automatically with the operation of the main valve and shall allow momentary flushing of the drain ports.

3. Hardware - All internal or underground nuts, bolts and pins or similar hardware for the hydrant shall be 304 Stainless Steel. Stainless Steel bolts shall be installed with anti-seize compound.

4. Upper Stem and Main Valve - Hydrant must have a self-lubricating upper stem and rubber encapsulated reversable main valve. The main valve shall be made of synthetic rubber and formed to fit the valve seat accurately.

5. Hose and Pumper Connections -Hose and Pumper Connections shall be breech-locked, pinned, or threaded and pinned to seal them into the hydrant barrel. Each hydrant shall have two (2), 2-1/2-inch fire hose connections and one (1), 4-1/2-inch pumper connection, with National Standard threads and each equipped with cap and non-kinking chain.

6. Coatings - Hydrant upper body interior and exterior shall be fusion bonded with epoxy coating or a primer coated with PPG Amercoat 370 Epoxy, or coated with Electrodeposition (E-coat) Epoxy Primer which conforms to latest edition of AWWA C550. All outside surfaces of the barrel above grade shall be painted Navel Silver Metallic with enamel Sherwin-Williams KEM 400 Enamel or approved equal.

The top bonnet, including the lip and the nozzle caps, shall also be painted the appropriate color as approved by the City of Gainesville. Caps and weather covers shall have reflecting properties.

7. Dry Top Bonnet - Each hydrant shall be constructed with a moisture-proof lubricant chamber that encloses the operating threads and provides automatic lubrication of the threads and bearing surfaces each time the hydrant is operated. This assembly shall be composed of a top "O" ring serving as a dirt and moisture barrier and a lower "O" ring that serves as a pressure seal.

8. Operating Nut - The operating nut shall be City of Gainesville standard four (4) sided nut and shall open by turning left (counterclockwise). Nozzle caps shall come with heavy duty, non-kinking chains.

Chains shall be securely affixed to the hydrant barrel and permit free turning of the nozzle caps and four (4) sided operating nut. The operating threads shall be totally enclosed in an operating chamber separated from the hydrant barrel by a rubber O-ring stem seal and lubricated by grease or an oil reservoir.

9. Stop Nut - A travel stop nut, stop stem pin, or similar City approved component shall be positioned in the top operating mechanism of the hydrant so that the valve stem cannot fall to the bottom of the shoe when the hydrant is fully open.

10. Anti-Friction Bearing – Hydrant shall be equipped with an anti-friction washer or bearing, or other City approved mechanism that minimizes operating forces and prevents breakage during standard hydrant operation.

11. Inlet - The 90 degree inlet elbow shall have a six (6) inch mechanical joint connection complete with accessories.

12. Extensions - Barrel extension sections shall be available in six (6) inch increments, complete with rod, extension coupling, and the necessary flanges, gaskets, and bolts so that the hydrant can be extended without excavating.

13. Nozzles - No lead shall be allowed in nozzle construction as a component of the metallic content.

14. Testing - Fire hydrants shall be tested in strict accordance with AWWA C502 (latest edition) at the point of manufacture. Certificates of Compliance shall be provided to the City upon request.

2.12 VALVE BOXES, COVERS & RISER EXTENSIONS

A. All valve boxes, covers and risers shall be cast or ductile iron. Valve boxes shall be two-piece heavy duty and meet H20 loading standards with inside diameter of barrel not less than 5-inches. Valve box assemblies shall be the extension screw-type with flared base and shall be of such length as will be adapted without full extension. Valve boxes shall be Sigma Corporation Catalog No. VB-261or VB-262 or approved equal.

B. Valve box covers shall meet H20 loading standards and weigh a minimum of 13 pounds. The word “WATER” shall be cast on the cover. Valve covers shall be Sigma Corporation Catalog No. VB-2600 or approved equal.

C. Valve box riser extensions shall be made of 6-inch ductile iron pipe and shall meet H20 heavy duty loading standards. Valve riser extensions shall be Sigma Corporation Catalog No. VB-2601 or approved equal.

2.13 RETAINER GLANDS

A. Retainer glands shall be ductile iron wedge-type. All retainer glands shall be the product of a single manufacturer. Wedge-type retainer glands shall be MEGALUG Series 1100 by EBAA Iron; Uniflange Series 1400 by Ford Meter Box Co.; StarGrip series 3000 by Star Pipe Products; or SIGMA One- Lok by SIGMA Corp; or approved equal.

B. Retainer glands shall be provided at all mechanical joints, including fittings, valves, hydrants and other locations as shown on the drawings.

2.14 LOCATOR WIRE

A. Locator wire on force main installations shall be direct-bury Number 10 American Wire Gauge (AWG) solid steel core plastic coated tracer wire with a 45-mil jacket and a minimum of 30-volt rating. Locator wire shall have a minimum of 2,032 lbs. break load and be blue colored for water line installation.

B. Tracer wire shall be Copperhead or approved equal.

2.15 WARNING TAPE

The Contractor shall provide a 6-inch-wide warning tape, two to three feet below finished grade, on all water mains per manufacturer’s specifications. The tape shall read “CAUTION BURIED WATER LINE BELOW” in black letters on a solid blue background per American Public Works Association standards.

The tape shall be chemically inert polyethylene at least 4 mills thick and colorfast.

2.16 CASING PIPE

A. The steel casing pipe shall be manufactured from steel conforming to ASTM A139, Grade B and be new and un-used. Minimum Size and Thickness shall be as follows:

UNDER HIGHWAYS UNDER RAILROADS

Pipe Diameter

(In)

Casing Diameter

(In)

Wall Thickness

(In) 6 12 0.250 8 16 0.250 12 18 0.250 16 24 0.250 18 30 0.312 20 30 0.312 24 36 0.375 30 42 0.375

Pipe Diameter (In)

Casing Diameter

(In)

Wall Thickness

(In) 6 14 0.250 8 18 0.250 12 22 0.312 16 30 0.406 18 30 0.406 20 32 0.469 24 32 0.469 30 42 0.500

B. The materials for casing under State Highways shall be in accordance with the Georgia Department of Transportation (GDOT) Standard Specifications for the Construction of Roads and Bridges, latest edition. It shall be the Contractor’s responsibility to determine the exact requirements of the Georgia Department of Transportation specifications. If there is a conflict between these specifications and the GDOT Specifications, the latter shall take precedent.

2.17 STAINLESS STEEL CASING SPACERS

Spacers shall be bolt on style with a two-piece shell made from T-304 stainless steel of a minimum 14-gauge thickness. The shell shall be lined with a ribbed PVC sheet of a .090-inch thickness that overlaps the edges.

Runners made from UMVW polymer, shall be attached to risers at appropriate positions to properly locate the carrier within the casing and to ease installation. Risers shall be made from T-304 stainless steel of a minimum 14-gauge thickness and shall be attached to the shell by MIG welding. All welds and metal surfaces shall be chemically passivated. All fasteners shall be made from T-304 stainless steel. Casing spacers shall be Model CCS as manufactured by Cascade Waterworks Manufacturing Company of Yorkville, Illinois, or approved equivalent.

2.18 BEDDING MATERIALS

Embedment materials shall be angular graded crushed stone, ¼-inch to ¾-inch in size with no more than 5% passing a No. 8 standard sieve in accordance with Class I materials as defined in ASTM D2321 Section 5.1.1.

2.19 CONCRETE THRUST BLOCKING

Concrete shall have a compressive strength of not less than 3000 psi, with not less than 5.5 bags of cement per cubic yard and a slump between 3 and 5-inches. For job mixed concrete, submit the concrete mix design for approval. A plastic barrier 6 Mil thick shall be placed between the concrete and the pipe. Ready-mixed concrete shall be mixed and transported in accordance with ASTM C94. Reinforcing steel shall conform to the requirements of ASTM A615, Grade 60.

2.20 METER BOXES

A. Meter boxes shall be constructed of cast iron or plastic

B. Meter boxes shall be A.Y. McDonald or City approved equal.

C. If plastic boxes are provided, they shall be high-density polyethylene.

D. Meter box covers shall be cast iron.

E. Boxes shall be sized according to the size meter they are to house.

2.21 MATERIALS FOR STRUCTURES

A. Provide materials for construction of manholes and other structures in accordance with the following:

1. Pre-cast concrete sections shall meet the requirements of ASTM C478. The minimum compressive strength of the concrete in pre-cast sections shall be 4,000 psi. The minimum shell thickness shall be one twelfth of the inside diameter of the riser or the largest cone diameter.

2. Pre-cast manhole cones shall be the eccentric type.

3. Seal joints between pre-cast sections by means of rubber O-ring gaskets or flexible butyl rubber sealant.

Butyl rubber sealants shall meet the requirements of AASHTO M-198. Sealant shall be pre-formed type with a minimum nominal diameter of 1-inch. Butyl rubber sealant shall be equal to Kent Seal No. 2 or Concrete Sealants CS 202.

4. Brick for height adjustment shall be whole and hard burned; conforming to ASTM C32 Grade MS.

Mortar shall be made of 1 part Portland cement and 2 parts clean sharp sand. Cement shall be Type 1 and shall conform to ASTM C150. Sand shall conform to ASTM C53.

5. Cast iron manhole frames and covers shall meet the requirements of ASTM A48 for Class 30 gray iron and all applicable local standards. All castings shall be tough, close grained, smooth and free from blow holes, blisters, shrinkage strains, cracks cold shots and other imperfections. No casting will be accepted with weights less than 95% of the design weight. Shop drawings must indicate the design weight and provide sufficient dimensions to permit checking. All castings shall be thoroughly cleaned in the shop.

B. Manhole frames and covers shall be equal to the following:

Type Design Load Manufacturers’ Reference

Traffic Heavy Duty U.S. Foundry Catalog No. 362, EJIW Catalog No. V- 1418-1 or Pamrex RE24R8FS

C. All Frames and covers shall have machined horizontal bearing surfaces.

D. Watertight type traffic frames and covers shall have the same weight and dimensions as those specified in Paragraph 2.20.B.

E. All manhole covers shall bear the standard “Gainesville Pattern” and shall have the word “WATER” cast in the top.

F. Pre-formed rubber boot and fasteners equal to those manufactured by Kor-N-Seal or Press Seal Gasket Corp. shall be provided in the pipe openings in pre-cast manhole sections.

G. All grout shall be non-metallic, non-shrink types, Cement shall be Type III. Grout shall meet the following requirements:

H. The Contractor shall furnish independent laboratory test results as evidence of full compliance with these requirements. Grout shall be mixed and placed in accordance with the recommendations of American Concrete Institute (ACI), and the grout’s published recommendations.

PART 3 EXECUTION

3.01 PIPELINE INSTALLATION

A. Proper and suitable tools and appliances for safe and convenient handling and laying of pipe and fittings shall be used. Great care shall be taken to prevent the pipe coating from being damaged, particularly cement linings on the inside of the pipes and fittings. Any damage shall be remedied as directed by the Engineer.

Criteria Test Method Result

Workability ASTM C191 Initial set time not less than 60 minutes

Compressive Strength (restrained condition) ASTM C109 1 day @ 3000 psi

Shrinkage ASTM C827 No shrinkage after or shrinkage after set placement and CRD 588

B. All pipe and fittings shall be carefully examined by the Contractor for defects just before laying and no pipe or fitting shall be laid which is defective. If any defective pipe or fitting is discovered after having been laid, it shall be removed and replaced in a satisfactory manner with a non-defective pipe or fitting by the Contractor at his own expense.

C. No pipe shall be laid in water. The Contractor will be required to operate pumps, if necessary, to remove water (whether from ground or surface sources) from the trench while pipe is being laid and joints are being made. When work is not in progress, the ends of the pipe shall be closed to prevent water or other foreign material from entering the pipe. Valves installed on existing mains shall be kept closed until after the line is tested, disinfected, and accepted for service.

D. Pipe laid in trenches shall be laid true to line and grade on a firm and even bearing surface for its full length at depths and grades as indicated. Adequate precautions shall be taken to prevent floatation of pipelines before backfilling. Installation of ductile iron pipe in underground pressure piping systems shall conform to the requirements of AWWA C600. Excavation of trenches and backfilling around pipes shall conform to the requirements of the section entitled “Excavation, Trenching and Backfilling” of these Specifications.

E. All water mains less than 12-inches in diameter shall have a minimum of 48-inches of cover above the top of the pipe or 48-inches below the closest edge of pavement, whichever is greater. All water mains 12-inches in diameter and larger shall have a minimum of 60-inches of cover above the top of pipe or 60-inches below the closest edge of pavement, whichever is greater unless otherwise indicated by the City.

The maximum cover above the top of pipe for all water mains shall be 12 feet.

F. Water mains shall maintain a minimum of 10 feet edge to edge separation from sewer lines, whether gravity or pressure. If the main cannot be installed in the prescribed easement or right-of-way and provide the 10 feet separation, the separation may be reduced provided the bottom of the water main is a minimum of 18-inches above the top of the sewer. Should neither of these two separation criteria be possible, the water main shall be installed per the direction of the Department of Water Resources. Where waterline crosses under gravity sewer lines, encase sewer line fully in concrete for a distance of at least 10 feet on each side of the crossing. Lay water line which crosses sewer force mains and inverted siphons at least 2 feet above these sewer lines; when joints in the sewer line are closer than 3 feet horizontally from the water line, encase these joints in concrete. Do not lay waterline in the same trench with gas lines, fuel lines, or electric wiring.

No water main shall pass through or come in contact with any part of a sanitary sewer manhole.

G. All elbows, tees, branches, crosses and reducers in pressure piping systems shall be adequately restrained against thrust. Underground pressure piping containing mechanical joint fittings shall be restrained by thrust blocks in addition to use of retainer glands. The Contractor may use forms or earth walls to mold the thrust blocks. When earth walls are used, they shall be constructed so that no loose earth will become mixed with the concrete. At the end of 24 hours, damp earth may be placed over the concrete to retain moisture.

H. All lumps, blisters, excess coating, dirt and other objectionable substances shall be removed from the bells and spigots. Bells and spigots shall be wiped clean and dry. Bells shall be centered in the trench and spigots driven home.

I. The Contractor shall keep surveying equipment on the job to be used for laying out the angles required for making bends and other work of this nature.

J. Bends, valves and other points where deemed necessary, shall be blocked and restrained to resist thrust.

This shall be accomplished by methods and means approved by the City. All forms used for concrete blocking shall be removed before backfilling. All fire hydrants shall be harnessed as directed by the City and concrete blocking will be required to resist the thrust on fire hydrants. All stress points and ends of mains shall be inspected before backfilling. A plastic barrier 6 Mil thick shall be placed between the concrete and the pipe.

K. Fire Hydrants shall be installed at terminus of all dead-end mains. Method of installation shall be approved by the City and in accordance with the Standard Details.

L. Whenever pipe requires cutting, the work shall be done in such manner as to leave a smooth end at right angles to the axis of the pipe. Special care shall be exercised to guard against breaking, chipping or splitting the existing piping materials.

M. All cutting of ductile iron pipe shall be done with a cutting saw. All burrs shall be removed from the inside and outside edges of all cut pipes.

N. Mechanical joints and restrained joints shall be made in strict accordance with the pipe manufacturer’s instructions. The gasket follower rings shall be kept clean and carefully centered in the bell with the bolts and bolt holes always parallel with the centerline of the pipe. The coating and lining of the pipe shall not be damaged. Just before assembly, the gasket shall be cleaned of all foreign material and shall be brushed with soapy water just before slipping the gasket over the spigot and into the bell of the pipes. The nuts on all bolts shall be started and tightened evenly around the entire circumference of the pipe. No one nut shall be tightened more than two turns tighter than the remainder of the nuts of the joint. When the joint is complete, the follower ring shall be equal distance from (parallel with) the face of the bell. The joint shall be in straight alignment during assembly. Any deflection required shall be made after assembly but before tightening bolts. Bolts shall be tightened with torque wrenches with the torque loads applied:

Bolt Size (In)

Range of Torque (Foot – Pounds)

5/8 45-60 3/4 77-90 1 100-120

1-1/4 120-150

O. Push on type joints shall be made in strict accordance with the pipe manufacturer’s instructions. All joints shall be completely “belled-up” and all spigots shall be “home”. The gasket seat in the socket, the gasket and the plain end of the pipe, shall be wiped clean before assembly. After the gasket has been inserted into the gasket recess, a thin film of lubricant shall be applied to the inside surface of the gasket and to the outside surface of the spigot end of the pipe to be jointed. After lubricating, the end of the pipe shall not be allowed to touch the bottom or side of the trench, causing dirt to adhere to the joint surface. When pipe is cut in the field, the cut end of the pipe shall be beveled with a file or grinder. The joint shall be in straight alignment while pushing the pipe to make assembly. Any deflection required shall be made after the joint is assembled.

P. Retainer gland joints shall be made in straight alignment and any deflection required shall be made before tightening the joint bolts. Wedge type retainer glands shall be installed in strict accordance with the manufacturer’s instructions.

Q. Deflection of ductile iron pipe at joints for long radius curves or for avoiding obstacles shall be permitted only upon approval of the City. Where deflection of joints is permitted, such deflection shall be made in accordance with and shall not exceed limits provided in Section 9b.5 and Section 9c.4 as applicable, of the

AWWA C600.

R. Any pipe that has its alignment, grade or joints disturbed after installation shall be taken up and re-laid.

3.02 CONNECTIONS TO EXISTING WATER MAINS

A. Make connections to existing pipelines with tapping sleeves and valves, unless specifically shown otherwise on the drawings.

B. Location: Before laying pipe, locate the points of connection to existing water mains and uncover as necessary for the City to confirm the nature of the connection to be made.

C. Interruption of Services: Make connections to existing water mains only when system operations permit.

Operate existing valves only with the specific authorization and direct supervision of the City. Provide the City with written notice at least 72 hours before any anticipated interruption in facility operations required by contractor activity.

D. Tapping Sleeves

1. Before attaching the sleeve, the pipe shall be thoroughly cleaned, using a brush and rag, as required.

2. Before performing field machine cut, the watertightness of the sleeve assembly shall be pressure tested.

The interior of the assembly shall be filled with water and tested with water to a pressure of 250 psi.

No leakage shall be permitted for a period of five minutes.

3. After attaching the sleeve to an existing main, but before making the tap, the interior of the assembly shall be disinfected. All surfaces to be exposed to potable water shall be swabbed or sprayed with a one-percent hypochlorite solution.

E. Connecting To Existing Side Street Mains

1. Before taking existing side street mains out of service, taps for air removal shall be made at each high point along the section of existing main to be temporarily taken out of service. With the City’s approval at each location, existing service lines may be used to expel air.

2. Close service line curb stops along the section or sections that will be dewatered and close all connecting main valves.

3. Take existing main out of service, cut and complete connection as detailed on the drawings.

4. Open appropriate valve, after expelling all air, return existing main to service and re-open all service line curb stops.

5. At all taps to remove air, install brass cap on corporation stop, backfill and replace pavement where required.

3.03 HYDRANT INSTALLATION

A. Prior to installation, inspect all hydrants for recent manufacture date, direction of opening, nozzle threading, operating nut and cap nut dimensions, tightness of pressure-containing bolting, cleanliness of inlet elbow, handling damage and cracks. Defective hydrants shall be corrected or held for inspection by the City.

B. All hydrants shall stand plumb and shall have their nozzles parallel with or at right angles to the roadway or nearest curb, with pumper nozzle facing the roadway. After rotating the hydrant to the correct position, tighten safety flange bolts to manufacturers’ recommendations.

C. Hydrants shall be set to the established grade, with the centerline of the lowest nozzle at least 18-inches above the ground or as directed by the City.

D. Each hydrant shall be connected to the main with a 6-inch branch controlled by an independent 6-inch valve.

E. Hydrants shall be located as shown on the drawings or as directed by the City.

F. Fire hydrants shall be installed within 5’ of a property line, unless an alternate location is approved by the City.

G. All backfill around fire hydrants and fire hydrant lead shall be compacted in 1’-0” lifts to a minimum of 98% of the maximum standard proctor density.

3.04 VALVE AND FITTING INSTALLATION

A. Prior to installation, valves shall be inspected for direction of opening, number of turns to open, freedom of operation, tightness of pressure-containing bolting and test plugs, cleanliness of valve ports and especially seating surfaces, handling damage and cracks. Defective valves shall be corrected or held for inspection by the City. Valves shall be closed before being installed.

B. Valves, fittings, plugs and caps shall be set and joined to the pipe in the manner as specified herein. Valves shall be provided with special support in accordance with the Standard Details, such as #57 stone or concrete pads so that the pipe will not be required to support the weight of the valve.

C. A valve box shall be provided on each underground valve. They shall be carefully set, centered exactly over the operating nut and truly plumbed. The valve box shall not transmit shock or stress to the valve. The bottom flange of the lower belled portion of the box shall be placed below the valve-operating nut. This flange shall be set on brick, so arranged that the weight of the valve box and superimposed loads will bear on the base and not on the valve or pipe. If depth to operating nut is greater than 4’, extension stems shall be installed to set the top of the operating nut 12-inches below finished grade. The valve box cover shall be flush with the surface of the finished area or such other level as directed by the City.

D. If valve boxes are installed concurrently with valves, the Contractor shall be responsible for maintaining valve boxes until the Project is complete. All lost or damaged valve boxes or covers shall be replaced at the Contractor’s own expense.

E. A concrete pad shall be required around each valve box, the top flush with the cover as shown on the Standard Details. Pre-cast valve pads will be allowed where approved by the City. Pre-cast valve pads shall not be used on slopes or in ditches. If pre-cast pads are used, the space between the valve box and the opening in the pad shall be filled with grout.

F. In no case shall valves be used to bring misaligned pipe into alignment during installation. Pipe shall be supported in such a manner as to prevent stress on the valve.

G. Where main valves are shown on the drawings adjacent to fire hydrant tees or intersection tees, install the valves no more than 4 feet from the tee unless shown or specified otherwise.

H. Non-restrained and push-on joints shall not be installed within 18 feet of restrained joints at valves or fittings, unless approved by the City.

I. All backfill around valves, valve boxes and fitting shall be compacted in 1-foot lifts to a minimum of 98% of the maximum standard proctor density.

3.05 JACK AND BORE

A. The Contractor shall provide to the City, for approval, a detailed plan for the methods proposed for the construction of the casing. These plans shall include the methods proposed for groundwater control and face protection.

B. In general, jack and bore operations shall conform to the requirements of the Georgia Department of Transportation as presented in their standard Specifications for the construction of Roads and Bridges, latest edition. If a conflict between these Specifications and the Georgia Department of Transportation Specifications exists, the more stringent specifications shall govern.

C. Install the steel casing pipe by the dry boring method. Bore the hole and install the casing through the soil simultaneously by a cutting head on a continuous auger mounted inside the casing pipe. Fully weld lengths of casing pipe to the preceding section in accordance with American Welding Society (AWS) recommended procedures. After the boring and installation of the casing is complete, install a cleaning plug on the rig and clean the casing.

D. After construction of the casing is complete, and has been accepted, install the pipeline in accordance with the detailed drawings and/or the specifications.

E. Check the alignment and grade of the casing and prepare plan for approval to set the carrier pipe at proper alignment, grade and elevation. The carrier pipe shall be supported by stainless steel casing spacers to limit radial movement to a maximum of 1-inch within the casing. Provide a minimum of two spacers per nominal length of pipe. One spacer shall be placed not more than 2 feet from each end of the casing. Subsequent spacers shall be placed at a maximum spacing of 10 feet within the casing.

F. Seal the ends of the casing with 4-inch brick walls, plastered with Portland Cement mortar and waterproofed with asphaltic roofing cement or Link-Seal Model PL or approved equal.

G. Provide all necessary bracing, bulkheads and shields to ensure complete safety to all traffic at all times during the work. Perform the work in such a manner as to not permanently damage the roadbed or interfere with normal traffic over it. Begin the boring operation in a pit, sheeted and shored as necessary, being at and proceed from one end. Observe all applicable requirements of Georgia Department of Transportation Regulations. Conduct the operations in such manner that all work will be performed below the level of the roadbed. Coordinate and schedule all of the work with the Georgia Department of Transportation or other governmental agency having jurisdiction over the roadway.

H. Complete all boring work at one particular location before boring work is started at another location.

I. If the casing installation work is being conducted in an unsafe manner or in a manner detrimental to the over-passing roadway or to the safety of the traveling public, all operations of boring shall cease until the necessary corrections have been made.

J. In the event that distress occurs to the roadway due to the boring, the Contractor shall be required to submit a plan to repair the roadway. The plan must be acceptable to the Department of Transportation, Hall County, and the City of Gainesville.

3.06 FREE BORING

A. The Contractor may construct a driveway crossing by the free bore method, instead of making a pavement cut, indicated on the drawings and approved by the City. The free bore method shall be accomplished by the dry auger boring method without jetting, sluicing, or wet boring.

B. The diameter of the free bore shall not exceed the pipe bell outside diameter or the pipe barrel outside diameter plus 1-inch, whichever is greater.

C. Free boring is allowable only under residential driveways. Free boring is not allowed under commercial driveways or any roadway except when the pipe diameter is 4-inches or less.

D. The Contractor shall be responsible for any settlement of the roadway caused by the free bore construction activities.

E. If the Contractor elects to free bore and an acceptable installation does not result for any reason, the Contractor shall install a casing pipe by the jack and bore method.

3.07 WATER METERS AND SERVICES LINES

A. Water meters and service lines are normally installed by the City. If installed by a private Contractor, this installation shall be tested and disinfected as part of the water main testing. A water service connection shall consist of a corporation tapped into the main, copper service line to a curb stop inside a meter box and meter set fittings.

B. All service lines crossing under pavement shall be installed inside a 2-inch schedule 40 PVC conduit. All service line taps shall be made with City pressure on the main and any visible leaks shall be repaired.