Technical Specification - King William Central Garage Water Main (1).pdf

KING WILLIAM COUNTY

CENTRAL GARGE WATER MAINS

KING WILLIAM COUNTY, VIRGINIA

GENERAL CONDITIONS AND TECHNICAL SPECIFICATIONS

MAY 2023

PROJECT NO. 100287-01-009

BOWMAN CONSULTING GROUP, LTD.

460 MCLAWS CIRCLE

SUITE 120

WILLIAMSBURG, VIRGINIA 23185

PHONE: 757-229-1776

FAX: 757-229-4683

BOWMAN.COM

Ductile Iron Pipe Central Garage Water Mains Section 02563 BCG Project No. 100287-01-009

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TABLE OF CONTENTS

I. Project Description ............................................................................................................... 02563-2

II. General Conditions ............................................................................................................... 02563-3

III. Technical Specifications ........................................................................................................ 02563-3

02563-2

GENERAL CONDITIONS AND

TECHNICAL SPECIFICATIONS

FOR

PRUCASE AND STORAGE OF 12-INCH DUCTILE IRON PIPE

KING WILLIAM CENTRAL GARAGE WATER MAINS

KING WILLIAM COUNTY, VIRGINIA

I. PROJECT DESCRIPTION

The project shall consist of 12-inch water mains (the “Pipe”), extending along one of the main roads and meeting the demands for development along US Route 360 to King William Commerce Park.

1. This advertisement is scoped to purchase, storage, and delivery of 12-inch Ductile Iron pipe.

2. Bidder will provide all equipment in accordance with the Contract Documents for the following price (s): Amounts to be shown in both words and numerals. In case of discrepancy, amounts shown in words will govern.

3. 12-inch Ductile Iron piping and delivery at $ _________/LF for 15,000 LF

4. Supplier’s Information:

Pipe Manufacturer Name: __________________________________________________

Distributor’s Name: _______________________________________________________

Address: ________________________________________________________________

Phone Number: __________________________________________________________

Email: __________________________________________________________________

Signature: _______________________________________________________________

II. GENERAL CONDITIONS

1. The Bidder shall ensure the purchased pipe conforms to the information presented in the

Technical Specification section.

2. 15,000 Linear Feet of 12-inch Ductile Iron Pipe shall be purchased, stored, and delivered.

3. The pipe shall be stored at the Bidder or Manufacturer’s facility or laydown yard until the County or County’s Contractor for installation of the Pipe (the “Contractor) is ready to receive the pipe.

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4. The pipe shall be delivered to a laydown yard of the Contractor or County’s choice, located within King William County with a full truck load.

5. Payment for the purchase, storage, and delivery of the Pipe shall be Bid as (1)one Lump

Sum. Payment shall be disbursed in 2 installments:

A. The first installment of 25% shall be provided once the agreement is executed and approved shop drawing is processed by the County’s engineer responsible for designing the Water Main project (the “Engineer”).

B. The second installment of 75% shall be provided upon the final delivery of the pipe.

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SECTION 02563

DUCTILE IRON PIPE

PART 1 - GENERAL

1.01 SUMMARY

A. Description

1. Purchase of Ductile iron pipe for future installation within bounds of the project in accordance with the Contract Documents.

1.02 QUALITY ASSURANCE

A. Referenced Standards:

1. American Society of Mechanical Engineers (ASME):

a. B1.1, Unified Inch Screw Threads (UN and UNR Thread Form).

b. B16.1, Cast Iron Pipe Flanges and Flanged Fittings - Classes 25, 125 and

250.

2. ASTM International (ASTM):

a. A48, Standard Specification for Gray Iron Castings.

3. American Water Works Association (AWWA):

a. C203, Standard for Coal-Tar Protective Coatings and Linings for Steel Water Pipelines - Enamel and Tape - Hot Applied.

b. C600, Standard for Installation of Ductile-Iron Water Mains and Their

Appurtenances.

4. American Water Works Association/American National Standards Institute

(AWWA/ANSI):

a. C105/A21.5, Standard for Polyethylene Encasement for Ductile-Iron Pipe Systems.

b. C110/A21.10, Standard for Ductile-Iron and Gray-Iron Fittings for Water.

c. C111/A21.11, Standard for Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.

d. C115/A21.15, Standard for Flanged Ductile-Iron Pipe with Ductile-Iron or

Gray-Iron Threaded Flanges.

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e. C150/A21.50, Standard for Thickness Design of Ductile-Iron Pipe.

f. C151/A21.51, Standard for Ductile-Iron Pipe, Centrifugally Cast, for

Water.

g. C153/A21.53, Standard for Ductile-Iron Compact Fittings for Water Service.

B. Manufacturer and Installer Qualifications:

1. Manufacturer shall have experience in manufacturing ductile iron pipe of similar size and type to that specified herein. For a manufacturer to be determined acceptable for providing ductile iron pipe, they must show evidence of manufacturing a minimum of 100,000 linear feet of ductile iron piping and ten years' experience in the design and manufacturing of ductile iron pipe of similar size, type and application (potable water) as specified herein.

2. Pipe not have been used in any previous application.

3. Lining material shall be approved for use in potable water systems and NSF/ANSI

61 certified.

1.03 SUBMITTALS

A. Shop Drawings:

1. Product technical data for gaskets, pipe, fittings, and appurtenances including:

a. Acknowledgement that products submitted meet the requirements of standards referenced.

I. Acknowledgement shall be in the form of a letter or company-standard form containing all required data and signed by an officer of the manufacturing, fabricating, or supplying company and at a minimum include:

1) Name and address of the County.

2) Name of the manufacturing or fabricating company.

b. Certificates: Provide affidavit of compliance per AWWA C110, C153 and

C151 fittings.

c. Test reports: Summarizing results of the final shop pressure and leakage test.

d. Copies of manufacturer's written directions regarding material handling, 02563-6 delivery, storage and installation for each type of pipe.

1.04 DELIVERY, STORAGE AND HANDLING

A. Protect pipe, fittings, appurtenances, linings, and coating during handling using methods recommended by the manufacturer and approved by the Engineer.

1. Use of bare cables, chains, hooks, metal bars or narrow skids in the contact with coated and/or lined pipe is not permitted.

2. Handle only from the outside of the pipe and fittings. Lifting by inserting forks into the pipe or fittings is not permitted.

B. Prevent damage to pipe during transit.

1. Repair abrasions, scars and blemishes. If repair of satisfactory quality cannot be achieved, replace damaged material in its entirety immediately.

C. Store pipe in a manner to keep pipe interior free from dirt and foreign matter.

1. Storing on stones or other hard material that can damage the pipe exterior is not permitted.

2. Storing pipe on top of pipe is not permitted.

3. Materials subject to corrosion shall be protected in accordance with the manufacturer’s recommendations.

PART 2 – PRODUCTS

2.01 MATERIALS

A. Pipe:

1. Pipe Length: 20 FT.

2. Mechanical joint:

a. AWWA/ANSI C151/A21.51, latest version.

b. Special Thickness Class 52.

c. Furnish for buried application.

d. Threaded bells shall not be used.

e. Acceptable Manufacturers:

I. US Pipe

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II. American Cast Iron Pipe Company

III. Engineer approved equal

B. Gaskets:

1. Mechanical joint: AWWA C111, latest version.

2. At no time shall gaskets be cut that will be used in the installation of pipeline

C. Linings and Coatings:

1. Interior linings:

a. Interior lining shall be Cement Mortar and conform to the AWWA

Standard C104.

b. All coating shall meet latest NSF/ASTM 61 certification.

c. Completely cover the interior surface of pipe and fittings.

d. Apply in accordance with the manufacturer’s recommendations.

e. Produce a pinhole free lining that has properly covered and adhered to the interior surface.

f. The lining shall be 40 mils dry film thickness (DFT) nominal thickness, 35 mils DFT minimum.

g. Apply within 8 hours after surface preparation.

h. Apply directly to the cleaned substrate to achieve the specified dry film thickness.

1) Multiple pass application is permitted provided the maximum allowable recoat time is not exceeded.

i. The lining shall have a 6 mils DFT nominally and 10 mils DFT maximum for the gasket area and spigot area end up to 6 inches back from the end of the spigot on the outside of the pipe.

j. Coating of the gasket seat and spigot ends shall be performed after application of the lining to all other pipe or fitting surfaces.

k. The lining in all pipe barrels and fittings shall pass 2,500 volt wet sponge holiday or discontinuity detection.

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l. Conduct holiday detection testing over 100 percent of lined surfaces.

1) Testing shall be in accordance with latest ASTM D5162 and most recent version of NACE RP-0188.

2) Testing shall be conducted over 100% of all lined surfaces for ductile iron.

3) All holidays shall be repaired in accordance with manufacturer’s instruction and retested to ensure a pinhole free lining.

m. Finished lining shall be generally smooth and free of runs, sags and sharp protuberances.

n. Field cutting and tapping of lined pipe and fittings is not permitted without written approval from King William County. If field cuts are allowed, the Contractor shall repair cut with liner repair kit in accordance with manufacturer’s recommendations.

1) All air release valve installations shall be field tapped at the true, as- constructed high point. All taps shall be verified from the inside of the pipe and the liner shall be repaired as necessary.

2) Short lengths of pipe required to accommodate pipe and fitting geometry shall be furnished factory lined.

2. Exterior coatings:

a. Pipe, fittings, and appurtenances, including mechanical joint, retainer glands, and appurtenances shall be coated.

b. Exterior coating shall be Asphaltic in accordance with latest AWWA/ANSI C110/A21.10.

PART 3 - EXECUTION

3.01 Testing and Inspection of Pipe

A. Inspection of Pipe:

1. Supplier/Bidder shall provide periodic (monthly updates) to the County about the status of the pipe during the fabrication process via email.

2. Supplier/Bidder shall provide visual evidence (pictures and videos) once the pipe in stored at Supplier/Bidder’s laydown yard.

3. Once delivered to the site, all pipes will be visually inspected by the County, the

Supplier/Bidder, the Engineer and the Contractor. Written inspection report shall

02563-9 be provided to the Supplier/Bidder. The County, the Engineer and the Contractor shall provide written certification to the Engineer prior to final payment.

B. Testing of Pipe: (Supplier/Bidder shall note that Pipe will be tested according to the requirements below and is not part of this scope.)

1. General Procedures for Hydrostatic Pressure Testing:

a. Testing shall be in accordance with AWWA C600.

b. Provide temporary restraints for exposed joints during test.

c. All piping and appurtenances (including air vents) shall be fully installed to the extent possible prior to performing testing.

d. Test buried piping after backfilling.

e. Ports for testing shall be at 2-IN taps for proposed air vents or in plugs installed for testing. Under no circumstances shall the contractor tap the proposed force main for testing purposes.

f. Test requirements:

I. Test medium: Potable water only.

II. Pressure: 150 psi.

III. Duration: 2 hrs.

g. Perform pressure test using calibrated pressure gages and calibrated volumetric measuring equipment to determine leakage rates.

I. Contractor shall furnish and use a gauge that has been calibrated within 12 months of the planned use. Contractor shall provide to Engineer verification certification of stated calibration of the pressure test gauge.

II. Select each gauge so that the specified test pressure falls within the upper half of the gauge's range.

III. Notify the Owner’s Representative a minimum of 2 business days prior to each test.

IV. Owner’s Representative shall be present during the test.

h. Completely assemble and test new piping systems prior to connection to existing pipe systems.

i. The hydrostatic pressure test shall not be done against any valve.

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j. The test allowance shall be calculated in accordance with AWWA C600.

The testing allowance is defined as the quantity of water that must be supplied to the pipe section being tested to maintain a pressure within 5 psi of the specified hydrostatic test pressure. No installation will be accepted if the quantity of makeup water is greater than that determined by the formula:

𝑄 =

𝐿𝐷√𝑃

148,000

Where:

Q = quantity of makeup water (gph) L = length of pipe section being tested (FT) D = nominal diameter of the pipe (IN) P = average test pressure during the hydrostatic test (psig)

k. The Contractor shall bear the cost of all testing and inspecting, locating and remedying of leaks and any necessary retesting and re-examination.

l. Prepare hydrostatic test report and submit to Engineer in accordance with Section 01300 – Shop Drawing and Product Data.

3.02 The Pipe delivery and acceptance shall be in accordance with terms and specification.

END OF SECTION

BOWMAN CONSULTING GROUP, LTD.

460 MCLAWS CIRCLE

SUITE 120

WILLIAMSBURG, VIRGINIA 23185

PHONE: 757-229-1776

FAX: 757-229-4683

BOWMAN.COM