Addendum No: 1 - Waco, Texas Addendum... · G. NACE RP-0274 High Voltage Electrical Inspection of Pipeline Coatings Prior to Installation. H. SSPC-SP-1 Solvent Cleaning Surface Preparation

Purchasing Services Post Office Box 2570

Waco, Texas 76702-2570 254 / 750-8062

Fax: 254 / 750-8063 CITY OF WACO www.waco-texas.com

Date: RFB No: Commodity:

8/05/2019 2019-035Landon Bridge and Utilites Rehabilitation

Closing Time: 2:00 P.M., August 28, 2019Opening Time: 2:01 P.M., August 28, 2019

Bid Opening Location: Purchasing Services Office 1415 N. 4th Street, Waco, TX 76702

______________________________________________________ Addendum No: 1

The above-mentioned bid invitation has been changed in the following manner. Sign and return addendum to the Purchasing Office by the closing time and date with your RFB response. Returning this page signed by your authorized agent will serve to acknowledge this change. All other requirements of the invitation remain unchanged. If you have any questions, please call or stop by the Purchasing Office at the above address.

THE FOLLOWING IS BEING ISSUED AS ADDENDUM NO. 1

PLEASE REVIEW THE FOLLOWING PAGES

Contract Documents

1. Following Changes are made on CP&Y documents

2.

Firm: _____________________________________________________________________________________ Address___________________________________________________________________________________

Signature of Person Authorized to Sign Bid: ______________________________________________________________________

Signor's Name and Title (Print or type):_____________________________________________________________________________ Date: ____________________Telephone:___________________________Fax:_________________________

Sign both, cover sheet & CP&Y Acknowledgement.

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RFB2019-035

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August 2019 Addendum 1 Project CWAC1900467 High-Performance Coatings 09 96 00 - 1

SECTION 09 96 00

HIGH-PERFORMANCE COATINGS

PART 1 GENERAL

1.01 SCOPE OF WORK

A. This section covers the work necessary to apply external polyurethane coating on steel pipe, field coating of joints, and field repair of coating damage, complete.

B. Exposed steel pipe will be coated as specified in Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main, unless specifically specified otherwise.

1.02 RELATED WORK

A. Section 01 33 00 – Submittal Procedures

B. Section 09 97 15 – Coating and Painting for 48-Inch Steel Water Main

1.03 SUBMITTALS

A. Contractor submittals shall be made in accordance with Section 01 33 00 Submittal Procedures of these Specifications.

B. Shop Drawings: Catalog cuts and other information for all products proposed. Provide copy of approved coating system submittals to the coating applicator.

C. Quality Control Submittals: Furnish the following:

1. Applicator's Experience with list of references substantiating compliance.

2. Coating manufacturer's certification stating the applicator meets or exceeds their coating application requirements and recommendations.

3. Coating manufacturer shall provide a copy of the manufacturer’s coating application quality assurance manual.

4. If the manufacturer of field-applied coating differs from that of the shop applied primer, provide written confirmation from both manufacturers’ that the two coating materials are compatible.

5. Contractor to submit a color pallet. Owner will specify color.

D. Provide copies of Certified Test Reports for all coating and lining tests.

1.04 REFERENCE STANDARDS

A. AWWA C205 Cement-Mortar Protective Lining and Coating for Steel Water Pipe-4-inch and Larger- Shop Applied.

B. AWWA C209 Cold Applied Tape Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines.

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C. AWWA C210 Liquid Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines.

D. AWWA C216 Heat-shrinkable Cross-linked Polyolefin Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines.

E. AWWA C217 Cold-Applied Petrolatum Tape and Petroleum Wax Tape Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines.

F. AWWA C222 Polyurethane Coatings for Interior and Exterior of Steel Water Pipe and Fittings

G. NACE RP-0274 High Voltage Electrical Inspection of Pipeline Coatings Prior to Installation.

H. SSPC-SP-1 Solvent Cleaning Surface Preparation

I. SSPC-SP-2 Hand Tool Cleaning Surface Preparation

J. SSPC-SP-3 Power Tool Cleaning Surface Preparation

K. SSPC-SP-5 White metal Abrasive Blast Surface Preparation

L. SSPC-SP-6 Commercial Abrasive Blast Surface Preparation

M. SSPC-SP-10 Near White Metal Abrasive Blast Surface Preparation

N. SSPC-SP-11 Power Tool Cleaning to Bare Metal

1.05 QUALITY ASSURANCE

A. Coating Applicator's Experience and Certification:

1. Coating Application Company and coating application supervisor (Certified Applicator) shall have a minimum of 5 years’ experience applying the specified coating system. Coating application personnel, whom have direct coating application responsibility, shall have a minimum of 2 years practical experience in application of the indicated coating system.

2. Coating applicator shall be certified by the coating manufacturer as an approved applicator.

B. Coating and/or lining manufacturer technical representative shall conduct tests of the coating to insure conformance with application instructions, recommended methods, and conditions.

C. Technical representative shall provide a written letter/report to the Owner’s Representative stating that coating is/was installed per manufacturer’s recommendations.

1.06 SYSTEM DESCRIPTION/DESIGN REQUIREMENTS (NOT USED)

1.07 DELIVERY, HANDLING AND STORAGE (NOT USED)

1.08 MAINTENANCE/SPARE PARTS (NOT USED)

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1.09 WARRANTY

A. The Contractor and coating applicator shall warrant to the Owner and guarantee the work under this section against defective workmanship and materials for a period of one (1) year commencing on the date of final acceptance of the work.

1.10 ABBREVIATIONS

A. MDFT Minimum Dry Film Thickness

B. Mil Thousandths of an Inch

1.11 DEFINITIONS

A. Manufacturer's Representative: Employee of coating manufacturer who is factory trained and knowledgeable in all technical aspects of their products and systems. Sales representatives are not acceptable as a technical representative unless written authorization from the coating manufacture is provided which states the sales representative has full authority to act on the behalf of the coating manufacturer.

1.12 OBSERVATION OF WORK

A. The Contractor shall give the Owner’s Representative a minimum of 14 days advance notice of the start of any work to allow scheduling for shop or field observation. Provide Owner Representative a minimum 3 days' notice for actual start of surface preparation and coating application work.

B. Provisions shall be made to allow Owner’s representative full access to facilities and appropriate documentation regarding coating application.

C. Observation by the Owner’s representative or the waiver of observation of any particular portion of the work shall not be construed to relieve the Contractor of his responsibility to perform the work in accordance with these Specifications.

D. Materials shall be subject to testing for conformance with these specifications as the Owner’s representative may determine, prior to or during incorporation into the work.

PART 2 PRODUCTS

2.01 MATERIALS (NOT USED)

2.01 FABRICATION (NOT USED)

2.02 CONTROLS (NOT USED)

2.03 FACTORY TESTS (NOT USED)

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2.04 GENERAL

A. Exterior and interior pipe and fitting surfaces shall be prepared and coated in accordance with referenced standards, written directions of the coating or lining manufacturer’s, and these specifications, whichever is more stringent.

B. Coatings and linings will be stored, handled, and applied per manufacturer’s written directions.

C. Pipeline coating or lining shall be the product of a single manufacturer. Product substitutions during the project will not be permitted.

2.05 EXTERIOR SHOP-APPLIED COATINGS

A. General

1. Steel pipe shall be coated in accordance with AWWA C222, except as modified herein.

2. Pipe that is atmospherically exposed shall be shop primed as specified herein and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

3. Buried dielectrically coated pipe and fittings passing through a structure wall or floor shall be coated for a minimum of two-inches beyond the interior wall or floor surface.

B. Plural Component Polyurethane:

1. General: Plural component, polyurethane coating system (referred to as a polyurethane system) shall be applied in accordance with AWWA C222, and as modified herein. Polyurethane coating shall have a light color to reflect sunlight and reduce thermal cycling of pipe and coating.

2. Shop Surface Preparation:

a. Steel pipe: SSPC-SP5, White Metal blast, 3.00 mil profile, minimum, or as required by the manufacturer, whichever is greater using standardized testing procedures including Press-O-Film and micrometer.

3. Shop Applied Coating Requirements:

a. Self-priming, plural component, 100 percent solids, non-extended polyurethane, suitable for burial or immersion.

b. One coat, 35 mils total dry film thickness, minimum, or as required to meet the holiday and coating defects limits specified this section.

c. Shall be one of the following products, subject to review and acceptance of submitted product performance reports:

(i) Protec II, Futura Coatings, Hazelwood, Missouri

(ii) Chemthane 2265, Chemline, Inc, St. Louis, Missouri

(iii) Carboline, Polyclad 777, Carboline Company, St. Louis, Missouri

(iv) LifeLast Durashield 210

d. Acceptance of submitted product is contingent upon:

(i) Submission of an independent testing report conducted within three years prior to bid opening documenting conformance to the coating performance criteria specified herein.

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(ii) Verification that no significant change in product formulation has occurred through comparison of current product Part A and B formulation with infrared spectrometry analysis of test product for the laboratory test report.

4. Laboratory Coating Testing and Report:

a. General: Coating manufacturer shall submit to the Engineer for approval, test reports indicating conformance to the specified performance criteria using prepared samples as defined using coating materials conforming to the following general requirements:

(i) Polyurethane coating material tested shall have been manufactured within 30 days of test sample preparation.

(ii) Coating material to have a minimum of three years prior pipeline coating application history.

(iii) Extended polyurethane coatings will not be acceptable.

(iv) Submission of incomplete reports, use of test procedures or methods other than those specified, or preparation of samples with a coating material other than those listed will result in rejection of the coating.

(v) Reports shall be submitted for review and approval not less than 30 days prior to coating application along with current product data sheets and MSDS sheets for parts A and B.

(vi) New product formula tests shall be accompanied with Part A and B wet samples for infrared spectrometry analysis. Wet samples shall be from the lot and batch tested and shall be collected and seal by the Engineer for laboratory analysis by the Engineer.

b. Test Sample Preparation:

(i) Coating manufacturer to provide 10 days advanced notification of coating sample preparation for Engineer observation, unless previous test reports are used, which have been approved within three years of bid opening.

(ii) Failure to fully conform to the preparation requirements will result in rejection of the submitted coating material.

(iii) Sample preparation completed by the coating manufacturer shall be fully documented and reported to the testing agency by the manufacturer.

(iv) All coating test samples shall be prepared in conformance with the following general requirements.

c. Sample Surface preparation

(i) Method: Abrasive Blast, Green Diamond or Steel Grit, SSPC-SP5, White Metal

(ii) Profile: 3.25 mils (±0.25 mils), Angular profile, 90 Peak Count per inch minimum, measured and recorded using surface profilometer.

d. Coating Application:

(i) Method: Spray film, in accordance with manufacturer’s written shop application requirements.

(ii) Thickness: Greater than or equal to 30 mils with no runs.

(iii) Cure: Air cure only, oven or other accelerated cures will not be acceptable.

(iv) Form: Sheet, steel panel, or steel pipe as required for test procedure.

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e. Sample Quantity: Three minimum for each test performed or as required by the ASTM Test Standard, whichever is more stringent.

f. Coating Tests:

(i) Testing shall be performed by a certified independent laboratory testing agency with a minimum five years’ experience in the performance of ASTM test procedures on coating systems.

(ii) All testing shall be at room temperature, unless specifically required otherwise by the ASTM test procedure.

(iii) Water Absorption (ASTM D570)

(a) Criteria: 2.00 percent, maximum

(b) Method: Long-term Immersion

(c) Sample: Sheet, 1 mm maximum thickness

(iv) Permeance (ASTM E96)

(a) Criteria: 0.20 inch-pound

(b) Method: Water Procedure BW (App. X1)

(c) Conditions: Supported in manner to provide full circulation of air around test container for duration of test procedure.

(v) Impact Resistance (ASTM G14)

(a) Criteria: 125 inch-pounds, minimum

(vi) Cathodic Disbondment (ASTM G95)

(a) Criteria: 12 mm, maximum

(b) Potential: -3.00 volts

(c) Duration: 30 days

(d) Radius: Measured from original holiday radius

(vii) Adhesion to Steel, Dry (ASTM D4541):

(a) Criteria: 3,000 psi, minimum

(b) Equipment: Delfesko Positest

(c) Dollies: 20 mm, maximum, scored to metal substrate

(viii) Abrasion (ASTM D4060)

(a) Criteria: 85 mg loss, maximum

(b) Conditions: CS-17 wheel, 1,000 grams weight, 1,000 revolutions

(ix) Tensile Strength (ASTM D412)

(a) Criteria: 4,000 psi, minimum

(x) Hardness, Shore D (ASTM D2240)

(a) Criteria: 70, Shore D, minimum

(xi) Flexibility (ASTM D522)

(a) Criteria: Pass (no cracking)

(b) Mandrel Diameter: 3 inch, 180 degrees

g. Reporting

(i) The coating applicator shall submit daily inspection reports within one week of inspection date to the Owner. As required by the ASTM test method, and the following additional information:

(a) Sample panel preparation date and identification

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(b) Surface preparation method and abrasive

(c) Surface Preparation profile and peak count

(d) Coating lot and date of manufacture

(e) Application spray gun and equipment used

(f) Application temperatures of coating materials and material temperature at the gun, ambient temperature, and panel surface temperature

(ii) Include all periodic test data and/or observations for all tested samples and show all multiple measurements in both table and graph.

(iii) Show all calculations as required by the ASTM test method.

(iv) Include digital photographic documentation of all visual assessments, test apparatus, and final panel condition using 4 mega pixels minimum resolution.

(v) Submit reports in both PDF and color printed format with photographs in JEPG format on CD.

C. Exterior Coating for Exposed Steel Pipe

1. All atmospherically exposed or vault piping shall be shop coated with the coating system as specified in Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

2.06 SPECIALS, FITTINGS, AND CONNECTIONS

A. Coating and lining application for special sections, connections, and fittings for steel or ductile iron pipe shall conform to coating system and application requirements as specified in this section.

B. Specials, fittings, and connections shall be defined as any pipe section with turnouts for blowoffs, interconnects, any valve, or other appurtenances; tees; crosses; wyes; laterals; manholes; mitered angles or elbows; and pipes which require special fabrication that prevents mechanical production application of the specified coating system from end to end of pipe joint.

C. In addition to the items listed as specials, the following items shall also be considered as specials:

1. Pipe joints with pass through holes.

D. Hand applied tape coatings will not be permitted on any specials, fittings, connections, and elbow fittings.

E. Specials, fittings, and connections shall be externally coated with polyurethane coating system applied from end to end of pipe joint on all specials, fittings, and connections.

2.07 EXTERIOR FIELD JOINT COATING

A. Pipe joints shall be field coated after pipe assembly in accordance with AWWA C216, or C217, whichever is applicable and as specified herein.

B. Field joint coating shall be compatible with the shop-applied coating system and provided by the same manufacturer or a manufacturer approved by the pipe coating manufacturer.

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C. All joints on pipe 24-inches in diameter or greater shall be coated with a heat shrink coating material.

D. Field joint coating materials shall be as follows or an approved equal.

1. Heat Shrink Sleeves:

a. Filler Material:

(i) Provide filler material for all push-on, flange, and coupling type joints and at all changes in outside diameter are greater than 1/8-inch.

(ii) Filler material shall adhere to the pipe and heat shrink sleeve. Size and type shall be as recommended by the sleeve manufacturer for type of pipe and joint.

(iii) Filler mastic for joints subject to weld after backfill shall exceed 500 degrees F melt point temperature.

(iv) Filler material shall be applied in a manner and of sufficient thickness that no tenting or voids remain under the heat shrink sleeve.

b. Joint Coating:

(i) Heat shrink, cross-linked polyolefin wrap or sleeve with a mastic sealant, 85-mils nominal thickness, suitable for pipeline operating temperature, as recommended by the manufacturer.

(ii) Provide standard recovery sleeve for welded or bell and spigot steel pipe joints. High recovery sleeves shall be provided for flange joints and coupling style joints.

(iii) Width of heat shrink sleeves shall be sufficient to overlap existing coating 2-inches minimum.

(iv) Consider sleeve shrinkage during installation and joint profile in determining sleeve width required. Overlapping of two or more heat shrink sleeves to achieve the necessary width on pipe joints will not be permitted without Engineer approval.

(v) Sleeve shall meet requirements for “Weld After Backfill” when allowed and approved by Engineer and Owner.

c. Manufacturer’s: Canusa-CPS – Aqua-Shield AQW-WAB System or Berry Plastics CPG – Covalence WaterWrap-WAB system.

2. Wax Tape Coating:

a. Apply coating in accordance with AWWA C217, except as modified herein.

b. Sleeves shall be field applied on all buried flexible joints, thrust restraint rods and brackets, and on joints, fittings, or irregular shapes or complex configurations that are not suited for the use of heat shrink coating system.

c. Do not use wax tape coating systems on vault piping, atmospherically exposed piping and appurtenances, or where subject to UV exposures.

(i) Provide filler material to fill and smooth all irregular surfaces, such that no tenting or voids remain under the applied sleeve.

d. Holdback Primer: As specified this section

e. Use sand backfill to protect wax coating from damage.

f. Coating System:

(i) Surface Preparation: SP11 Power Tool to Bare Metal.

(ii) Primer: petroleum or petrolatum wax

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(a) Manufacturers: Canusa, Raychem-Covalence, or approved equal

(iii) Filler Material: Filled petroleum or petrolatum wax

(iv) Inner Tape: Petroleum or petrolatum wax impregnated fabric, 6-inch width maximum, 40 mils thick

(v) Outer Wrap: PVC or tape suitable for application to inner tape.

g. Wax tape coating system shall be as manufactured by:

(i) Denso North American

(ii) Trenton

(iii) Or approved equal

2.08 MATERIALS FOR REPAIR OF COATINGS AND LININGS

A. General

1. Coating or lining repair materials shall be compatible with the shop-applied coating or lining system and shall be approved by the coating or lining manufacturer.

2. All major repairs on pipe greater than 24-inches in diameter or coated with polyurethane coating system shall be repaired using heat shrink sleeves as specified for field joint coating in accordance with C216, except as modified herein.

3. Minor coating repairs for polyurethane coated or exposed pipe shall be as specified herein.

B. Coating Repair Materials

1. Heat Shrink Sleeves (major field repair):

a. Filler Mastic: Provide mastic filler to fill tape void as required.

b. Full Wrap Coating: Cross-linked polyolefin wrap with a mastic sealant, 85-mil thickness nominal, suitable for pipeline operating temperature, sleeve material recovery as recommended by the manufacturer. Sleeve length shall provide a minimum of 3 inches overlap onto intact pipe coating.

c. Manufacturer’s: Canusa, Raychem (Polyken), or approved equal.

2. Heat-Applied Patches (minor field repair)

a. Heat applied adhesive, polyolefin backed, mastic coated tape, 12-inches maximum size.

b. Patch shall provide a minimum of 2 inches overlap onto intact pipe coating.

c. CRP patch as manufactured by Canusa, PERP patch as manufactured by Raychem (Polyken), or approved equal.

C. Polyurethane Coating Factory Repairs

1. Polyurethane coating system repair shall be in accordance with the coating manufacturer’s recommended procedures.

2. Coating material for minor repairs shall be single use kits or other mix ratio controlled packages of slow set polyurethane coating material similar to the existing coating.

3. Major repairs will be completed using the coating material specified for the coating or the lining. Coating shall be reapplied using plural component spray equipment by a manufacturer certified coating applicator.

D. Exposed Pipe Coating System

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1. Touch-up repair all damage to the primer and/or intermediate coats with the specified coating system prior to final coating of the pipeline in accordance with Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main.

PART 3 EXECUTION

3.01 DEMOLITION/PREPARATION (NOT USED)

3.02 INSTALLATION (NOT USED)

3.03 INSPECTION (NOT USED)

3.04 FIELD TESTING (NOT USED)

3.05 FIELD PAINTING (NOT USED)

3.06 CLEANING (NOT USED)

3.07 ENVIRONMENTAL LIMITATIONS

A. General

1. Products shall comply with federal, state, and local requirements limiting the emission of volatile organic compounds and worker exposure.

2. Comply with applicable federal, state, and local, air pollution and environmental control regulations for surface preparation, blast cleaning, disposition of spent aggregate and debris, and coating application.

3. Do not perform abrasive blast cleaning whenever the relative humidity exceeds 85 percent, whenever surface temperature is less than 5 degrees above the dew point of the ambient air.

4. Do not apply coatings when:

a. Surface and ambient temperatures exceed the maximum or minimum temperatures recommended by the coating manufacturer as written in published product literature.

b. The surface temperature exceeds 10 degrees F below the maximum temperature recommended by the coating manufacturer as written in published product literature during application and curing.

c. In dust or smoke-laden atmosphere, blowing dust or debris, damp or humid weather, or under conditions that could cause icing on the metal surface.

d. For epoxy coatings or linings when it expected that surface temperatures would drop below 5 degrees above dew point within 4 hours after application of coating.

e. Whenever relative humidity exceeds 85 percent for polyurethane coating application.

5. Where weather conditions or project requirements dictate, Contractor shall provide and operate heaters and/or dehumidification equipment to allow pipe surfaces to be abrasive blasted and coated as specified and in accordance with the manufacturers coating application recommendations.

6. Work activities can be restricted by the Engineer until adequate temperature and humidity controls are in place and functioning within the environmental limits specified.

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7. Coating applicator shall provide a monitoring system approved by the coating manufacturer that constantly records pipe and coating conditions during coating application. Recorded monitoring parameters shall include pipe temperature, line speed, surface preparation, holiday test and other parameters applicable to the type of coating.

B. Temperature Control

1. In cold weather or if moisture collects on the pipe, preheat pipe to a temperature between 45 and 90 degrees and 5 degrees above dew point, whichever is greater.

2. When temperatures are above or below the coating manufacturers recommended application temperatures, the Contractor will provide temperature controls as necessary to permit work to precede within the manufacturer’s temperature limitations.

3. Provide tenting, insulating blankets, baffles, or bulkheads as required to zone and control heating or cooling effectiveness.

4. Heating shall be with indirect fired heaters that do not increase humidity levels within the work area. Heaters shall be sized for the area to be heated.

C. Dehumidification

1. Contractor shall provide dehumidification equipment when necessary for shop or field environmental control during surface preparation and/or coating application. Dehumidification equipment shall be properly sized to maintain dew point temperature 5 degrees or more below surface temperature of metal surfaces to be cleaned and coated.

2. Cleaned metal surfaces shall be prevented from flash rusting throughout the project duration, condensation or icing shall be prevented throughout surface preparation and coating application.

3. Equipment size and power requirements shall be designed by personnel trained in the operation and setup of dehumidification equipment based on project requirements and anticipated weather conditions.

4. Dehumidification equipment shall operate 24 hours per day and continuously throughout surface preparation and coating application.

5. Contractor to provide personnel properly trained in the operation and maintenance of the dehumidification equipment or provided training by the dehumidification equipment supplier.

6. Daily maintenance requirements of the equipment shall be documented in writing and posted near the equipment for review by the Engineer.

7. Reblasting of flash rusted metal surfaces or removal of damaged coatings, because of equipment malfunction, shutdown, or other events that result in the loss of environmental control, will be at the sole expense of the Contractor.

3.08 SURFACE PREPARATION

A. General

1. Inspect and provide substrate surfaces prepared in accordance with these Specifications and the printed directions and recommendations of coating manufacturer whose product is to be applied.

2. Visible oil, grease, dirt, and contamination shall be removed in accordance with SSPC-SP1, solvent cleaning.

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3. Surface imperfections such as metal slivers, burrs, weld splatter, gouges, or delaminations in the metal shall be removed by filing or grinding prior to abrasive surface preparation.

4. Protect prepared pipe from humidity, moisture, and rain. All flash rust, imperfections, or contamination on cleaned pipe surface shall be removed by reblasting.

5. Priming and coating of pipe shall be completed the same day as surface preparation.

B. Weld Surface Preparation

1. Requirements: Spray applied coating systems do not require weld grinding.

C. Steel Surface Preparation

1. Surface preparation of steel pipe shall be in accordance with SSPC surface preparation standards.

2. Grit and/or shot abrasive mixture and gradation shall be as required to achieve the degree of cleanliness and coating adhesion specified.

3. Pipe cleaned by abrasive blasting with recyclable steel grit and/or shot or other abrasive shall be cleaned of debris and spent abrasive in an air wash separator.

4. Polyurethane coating system shall have a sharp angular surface profile of the minimum depth specified.

5. Work shall be performed in a manner that does not permit the cleaned metal surface to rust back or flash rust.

6. Rust back or flash rust shall be fully removed with the steel surface cleanliness equal to the metal surface cleanliness prior to rust back or flash rusting. Determination of the equivalent surface cleanliness shall be at the Engineer’s sole discretion.

3.09 SHOP-APPLIED COATING SYSTEMS

A. Polyurethane Coating or Lining

1. Applicator Qualifications:

a. Equipment will be certified by the coating manufacturer to meet the requirements for material mixing, temperature control, application rate, and ratio control for multi-part coatings.

b. Equipment not meeting the written requirements of the coating manufacturer shall be rejected for coating application until repairs or replacement of the equipment is made to the satisfaction of the Engineer.

c. Personnel responsible for the application of the coating system shall have certification of attendance at the coating manufacturer’s training class within the last three years. The certified applicator shall be present during all coating application work and shall have responsibility for controlling all aspects of the coating application.

2. Pipe surface temperature shall be within temperature and dew point recommended in manufacturer’s product literature and as specified in this Section.

3. Coating application shall be performed in an environmentally controlled shop area that meets or exceeds the written environmental application requirements of the coating manufacturer. Application in outdoor conditions will not be acceptable without adequate environmental shelter, environmental controls, and/or dehumidification.

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4. Coating adhesion and holidays testing shall be tested as specified in this Section.

5. Coating manufacturer shall provide to the Engineer a copy of the manufacturer’s coating application quality assurance manual prior to beginning coating application. Strict conformance to the requirements of the manual will be required. Deviation from the requirements of the manual will be grounds for the Engineer to reject the applied coating.

6. Unacceptable Coating Application

a. Coating applied under improper environmental conditions will be rejected.

b. Pipes that exceed the allowable quantity of coating defects, regardless of size or cause, shall be rejected.

c. Coating which fails the adhesion or holiday testing as specified this section shall be rejected.

d. Pipe coating that is subject to off ratio application, blistering, or is not applied in conformance with the coating manufacturer’s written instructions or recommendations shall be rejected.

7. Rejected coating shall be removed from the full length of the pipe to bare metal and reapplied using proper application methods in accordance with the quality assurance manual and the requirements of these specifications.

8. Perform coating and lining repairs as specified in this section.

3.10 EXTERIOR COATING HOLDBACK

A. Coating holdbacks shall be straight and cut through the full thickness of the coating.

B. Cutbacks shall be completed in a manner that permits field coating of joints in accordance with the manufacturer’s recommendations and as specified herein.

C. Holdbacks shall be as required for proper jointing of pipe, considering joint welding requirements, and be as follows:

Polyurethane coating

Push-on joint, spigot 1 inch before centerline gasket

Push-on, bell Flush with bell end

Welded, spigot 3 inches, minimum

Welded, Bell 4-inches, minimum

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D. Holdback Corrosion Protection:

1. Holding primer for corrosion protection of cutbacks or holdbacks shall be compatible with the specified joint coating system and weld after backfill requirements, when applicable.

2. Approved holdback primers are:

a. Tnemec Omnithane – Suitable for all joints, except joints subject to weld after backfill

b. Tnemec 90E-92 Ethyl Silicate Inorganic Zinc Primer – suitable for all joints, including weld after backfill joints.

c. ICI Devoe Cathacoat 304V Ethyl Silicate Inorganic Zinc Primer – suitable for all joints including weld after backfill joints.

d. Polyken or other tape primers are not allowed

3. Primer shall not result in running or melting of the coating or cause toxic fumes when heated during weld after backfill operations.

4. Application and thickness of holding primer shall be in accordance with the coating manufacturer’s recommendations, but shall not impair the clearances required for proper joint installation.

5. Primer application on spigot end of field welded pipe shall be held back 1 to 2 inches from the end of the spigot or as necessary to prevent toxic fumes during field welding.

6. Any corrosion within the holdback areas shall be abrasively blasted to near white metal in accordance with SP10 or power tool cleaned to bare metal in accordance with SP11 prior to applying joint coating.

3.11 FIELD COATING JOINTS

A. General:

1. Remove all oil or grease contamination by solvent wiping the pipe and adjacent coating in accordance with SSPC-SP1, Solvent cleaning.

2. Clean pipe surface and adjacent coating of all mud, corrosion, and other foreign contaminates in accordance with SSPC-SP11, Power Tool Cleaning to Bare Metal or abrasive blast joints in accordance with SSPC-SP10, near white metal blast, that exhibit any surface corrosion or staining. When required, clean the full circumference of the pipe and a minimum of 6 inches onto the existing coating.

3. Remove all loose or damage pipe coating at joint and either repair the coating as specified herein or increase the length of the joint coating, where reasonable and practical.

4. Complete joint bonding of pipe joints before application of joint coating. Joint bonds shall be low profile bonds and all gaps and crevices around the bonds shall be filled with mastic sealant.

5. Contractor to electrically test completed joint coating for holidays with high voltage spark tester.

B. Weld After Backfill Joint Requirements:

1. Post-welded or ‘Weld after Backfill’ joints are defined as welded pipe joints that have been coated and backfilled prior to completing interior welds.

2. Post welded joints shall be coated and protected as follows:

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a. Joint coating shall be heat shrink joint sleeves only. Tape wrapped joints will not be acceptable.

b. Provide 6-inch wide protective layer centered over the interior weld location as recommended by the joint sleeve manufacturer. Heat resistant tape will not be acceptable.

c. Hold back primer shall be suitable for post weld conditions as specified this section and shall not exhibit any binder breakdown in the heat effect zone that causes loss of joint coating adhesion to the holdback primer.

d. Filler mastic materials shall be high temperature materials with 500-degree F minimum melting point.

e. Joints shall be fully buried prior to welding, with not less than 36-inch cover of soil or flowable fill material on all sides. Sand or flowable fill backfill is preferred for weld after backfill joints.

3. Welding of the joints shall be in conformance with the Section 33 05 24 Steel Pipe for Water Transmission, and as modified herein:

4. If Contractor elects to post-weld any joints, Contractor shall demonstrate that the joint welding procedures will not significantly damage the coating by fully excavating the first two joints for evaluation of the joint coating condition. Engineer will randomly select up to five additional post-welded joints for excavation by Contractor for evaluation of joint coating condition. Joint coating will be destructively evaluated by the Engineer. Contractor will remove and replace joint heat shrink sleeve upon completion of the evaluation.

5. In the event that any excavated post welded joint exhibits any heat related damage as defined herein, Contractor shall modify and test a new post welding procedure prior to completing any additional post-welded joints. Contractor shall demonstrate that the revised joint welding procedure will not significantly damage the coating by repeating the weld after backfill evaluation requirements defined in this Section, including excavation of the five additional randomly selected joints for destructive evaluation.

C. Heat Shrink Sleeve Joint Coating:

1. Store, handle, and apply field heat shrink sleeve coatings in accordance with AWWA C216 and these specifications.

2. Store sleeves in shipping box until use is required. Keep dry and sheltered from exposure to direct sunlight. Store off the ground or concrete floors and maintain at a temperature between 60 and 100 degrees as recommended by the sleeve manufacturer.

3. Metal surface shall be free of all dirt, dust, and surface corrosion prior to sleeve application. Surface preparation shall be in accordance with the joint coating manufacturer’s recommendations.

4. Where corrosion in the holdback area is visible, surfaces shall be prepared in accordance with SSPC-SP10, near white metal blast, or SSPC-SP11, power tool cleaning to bare metal.

5. Preheat pipe uniformly as recommended by the sleeve manufacturer. Monitor pipe temperature using a surface temperature gauge, infrared thermometer, or color changing crayons. Protect preheated pipe from rain, snow, frost, or moisture with tenting or shields and do not permit the joint to cool.

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6. Fill all cracks, crevices, gaps, and step-downs greater than 1/4-inch with filler mastic in accordance with the manufacturer’s recommendations for the full circumference of the pipe.

7. Apply heat shrink sleeve when it is at a minimum temperature of 60 degrees and while maintaining the pipe temperature above the preheat temperature specified. Apply sleeve in accordance with the manufacturer’s instructions and center the sleeve over the joint to provide a minimum 2-inch overlap onto the existing pipe coating.

8. Completed joint sleeve shall be fully bonded to the pipe and existing coating surface without voids. Mastic beading shall be visible along the full circumference of the sleeve. There shall be no excessive wrinkling or burns on the sleeves. Sleeves that do not meet these requirements shall be removed and the joint recoated as directed by the Engineer. Minor repairs may be repaired using heat applied patch material specified for minor coating repairs.

9. Allow the sleeve to cool before backfilling. In hot climates, provide shading from direct sunlight. Water quenching will be allowed only when permitted by the sleeve manufacturer.

10. Heat shrink joint coatings which have become wrinkled or disbonded because of prolonged exposure to UV light or thermal cycling shall be removed and replaced.

11. Double coating of defective or damaged heat shrink coatings will not be permitted. Any double coated heat shrink sleeves shall be immediately rejected and Contractor shall remove and recoat the joint.

3.12 REPAIR OF COATINGS AND LININGS

A. General:

1. All areas where holidays are detected or coating is visually damaged, such as blisters, tears, rips, bubbles, wrinkles, cuts, or other defects shall be repaired. Areas where no holidays are detected but are visually damaged shall also be repaired.

2. Maximum defects allowable shall be as specified herein for the coating system.

B. Polyurethane Coating or Lining Repairs

1. General

a. Complete coating or lining repairs on any piece of pipe length shall be in accordance with the coating manufacturers written instructions and these specifications, whichever is stricter.

b. Defect Size:

(i) Minor repairs - repairs that are less than 6-inches in the greatest dimension.

(ii) Major repairs - repairs that exceed 6-inches in the greatest dimension.

c. Pipes exceeding the maximum number or size of coating defects shall be stripped of coating, reblasted, and recoated.

d. Pipe arriving in the field with defects or repairs exceeding the maximum number or size of coating defects will be returned to the shop for recoating at the Contractor’s expense.

2. Minor Repairs:

a. Coating or lining repairs on any joint of pipe shall not exceed 1.5 per 100 square feet of surface area.

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b. Two or more minor repairs within 6-inches diameter circle will be considered a single repair.

c. Repairs for adhesion testing will not be included in the total number of repairs.

d. Minor repairs

(i) Surface Preparation: Clean and feather the defect by power tool sanding with 80 grit or coarser sandpaper to roughen the existing coat and feather the edges of the defect for a minimum of 2-inches around the defect.

(ii) Shop repair Materials:

(a) Slow setting parent material polyurethane coating material in syringes or other single use packaging that controls mix ratio.

(b) Coating Manufacturer’s polyurethane coating repair products subject to Engineer approval.

(iii) Field Repair Materials:

(a) Heat applied coating materials; CRP Patch, Canusa; PERP Patch, Tyco Adhesives, or approved equal.

(iv) Apply a single coat of the specified patch coating material at the specified coating thickness.

(v) Repairs adhesion shall be 50 percent of the specified coating adhesion.

3. Major Repairs:

a. Major repairs shall not exceed two per pipe joint and the combined area shall not be greater than 50 percent of the pipe.

b. Major repairs:

(i) Surface Preparation:

(a) The metal surface and surrounding coating shall be abrasively blasted in accordance with SSPC-SP5, White Metal Blast, or to equal in cleanliness and profile as the original surface preparation.

(b) Existing coating shall be feathered and roughened to the equivalent of 40 grit sandpaper.

(ii) Shop Repair Materials:

(a) Same material as the pipeline coating or lining and shall be applied by using plural component spray equipment.

(iii) Field Repair Materials:

(a) Same material as the pipeline coating or lining and shall be applied.

(b) Heat shrink sleeves as specified for pipeline joints.

(c) Maximum allowable area of wraps needed for repair shall be a total of 24” x 24”. If repair exceeds 24” x 24”, then pipe shall be shipped to the factory for coating repair.

c. One coat of the specified original coating material shall be applied over the repaired surface at the specified thickness.

d. Repair adhesion shall be equal to the specified coating adhesion.

3.13 INSPECTION AND TESTING

A. General

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1. Applicator shall inspect and test the coating system in accordance with referenced standards and these specifications, whichever is more stringent as determined by the Owner’s Representative and Owner.

2. The frequency of the testing shall be determined by the applicator but shall not be less than the requirements of this specification.

3. Owner or Owner’s Representative will conduct random independent inspections and tests for the final acceptance or rejection of pipe coating or lining at any time prior to installing and backfilling pipe.

B. Adhesion Testing

1. General

a. Adhesion testing shall be conducted at the shop prior to shipment. Pipe shipped without adhesion testing will be field-tested. Pipe rejected in the field will be returned to the shop for repair at the sole expense of the Contractor.

b. A minimum of two pipes will be tested for adhesion from each lot of pipe coated up to 3,000 square feet of pipe. An additional adhesion test will be conducted on every increment up to 2,000 square feet of pipe coated in excess of the first 3,000 square feet of pipe. (i.e. if one workday of production is 6,000 square feet of pipe, four adhesion tests will be conducted on the pipe lot.)

c. A pipe lot is defined as the quantity of pipe that is coated by a single crew within a work shift, but not to exceed 12-hours.

d. The pipe coating applicator shall repair all coating damage from shop adhesion testing. Contractor shall be responsible for coating repairs for all field adhesion testing.

e. Adhesion tests will be performed not less than 24 hours after coating application. Tests conducted prior to 24-hours will be acceptable only if the test meets or exceeds the adhesion criteria specified and the test was requested by the pipe fabricator.

f. Pipe will be randomly selected for adhesion testing.

g. Owner or the Owner’s Representative has the right to conduct additional adhesion testing as deemed necessary to assure the pipe meets or exceeds the requirements of this specification at any time and location prior to pipe installation.

2. Rejection of Coating

a. If any pipe within a lot fails to meet the test criteria specified for the coating type, that pipe shall be rejected along with all other pipes within the lot. Each pipe within the rejected pipe lot will then be individually tested and rejected on a pipe-by-pipe basis in conformance with the test procedures and criteria specific for the coating type.

b. All rejected pipe shall have all coating removed from the full-length pipe and the pipe abrasive blasted and recoated.

3. Polyurethane Adhesion Testing

a. Acceptance Criteria

(i) Acceptance will be based on one pull minimum, with no pulls less than the minimum 1,750-pound criteria where multiple accepted pulls are conducted on the same joint of pipe.

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(ii) The average value for all coating or lining adhesion pulls performed within a lot of pipe shall not be less than 2,000 psi.

(iii) Adhesion testing shall be conducted on two sufficiently cured, coated sections of pipe from each shift selected at random with one from the beginning shift and one from halfway through the shift. Adhesion testing shall be conducted in accordance with ASTM D4541. The coating around the dolly shall be scored completely through to the steel substrate. If the adhesion is not satisfactory, two additional tests shall be made at two different locations on the same pipe. If either additional test fails, the pipe shall be rejected. If the pipe is rejected, a systematic inspection of all pipe coated on that shift shall be made, and all pipe not meeting this adhesion requirement shall be rejected. Damaged test areas of accepted pipe and areas determined to have unsatisfactory adhesion shall be repaired as outlined in this specification.

(iv) Each pipe in a lot shall be tested if the initial average value for the first two pipe spools is below the minimum requirement. Pipe lots that do not meet the average value for all adhesion pulls shall be rejected. Each pipe that fails the minimum adhesion criteria shall be rejected as determined above.

(v) Failure shall be by adhesive and cohesive failure only. Adhesive failure is defined as separation of the coating from the steel substrate. Cohesive failure is defined as failure within the coating, resulting in coating remaining both on the steel substrate and dolly.

b. Test Procedures

(i) Polyurethane coating adhesion to steel substrates shall be tested using self-aligning pneumatic pull off equipment, such as the Delfesko Positest, and test procedures in accordance with ASTM D4541 and AWWA C222, except as modified in this section.

(ii) All adhesion test pull records shall be maintained in an electronic spreadsheet that includes pipe identification, pipe coating date, adhesion test date, surface tested (interior or exterior), surface temperature, coating thickness, tensile force applied, rate of pressure change per second, mode of failure, and percentage of substrate failure relative of dolly surface.

(iii) Dollies for adhesion testing shall be 20 millimeters in diameter and glued to the coating surface and allowed to cure for a minimum of 12 hours before testing.

(iv) Polyurethane coatings shall be scored around the dolly prior to conducting the adhesion test. Scoring shall be completed manually, normal to the pipe surface, or in a manner that does not stress or over heat the coating.

(v) Adhesion testing shall be performed at temperatures between 55- and 100-degrees F. Tests may be performed at temperatures up to 115 degrees F if no significant affect in the test results are statistically detectable.

(vi) Partial substrate and glue failures will be retested if the substrate failure is less than 50 percent relative of the dolly surface area and the applied tension was less than the specified adhesion. Pipes that have partial substrate failures greater than 50 percent and less than the specified adhesion will be rejected as a substrate adhesion failure.

(vii) Glue failures in excess of the minimum required tensile adhesion would be accepted as meeting the specified adhesion requirements.

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(viii) Adhesion tests will be conducted on polyurethane pipe coating and lining independently and will be accepted or rejected independently of the other.

C. Holiday Testing

1. Holiday tests on polyurethane coatings linings will be conducted on the completed coating after cure or 24-hours, whichever is less, using a high voltage spark test in accordance with NACE Standard RP-0274 and these specifications. In addition, the pipe shall be holiday tested by the Contractor just before the pipe is laid in the trench.

2. Coating thickness used for holiday testing shall be the minimum specified coating thickness.

D. Dry Film Thickness Testing

1. Coatings shall be tested for dry film thickness using a properly calibrated magnetic pull off or eddy current equipment.

2. Coating thickness measurements shall be conducted as necessary and without limitation. Testing conformance to the requirements of SSPC PA-2 is specifically excluded from this specification.

3.14 HANDLING, TRANSPORTATION, AND STORAGE

A. Pipe shall be handled in accordance with Section 33 05 24 Steel Pipe for Water Transmission.

END OF SECTION

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August 2019 Coating and Painting for Addendum 1 CWAC1900467 48-Inch Steel Water Main 09 97 15 - 1

SECTION 09 97 15

COATING AND PAINTING FOR 48-INCH STEEL WATER MAIN

PART 1 - GENERAL

1.1 SCOPE

A. This specification section covers the work necessary to prepare and apply external coating to both existing and new exposed (unburied) steel pipe, fittings, appurtenances and repairs of coating damage, complete and in place. Buried steel pipe external coating shall be as specified in Section 09 96 00, High-Performance Coatings.

B. The work of this section includes the coating of all exterior surfaces on the steel 48-inch diameter water pipeline located above ground along Landon Branch Bridge and within the project limits, including the pipe barrel, all fittings, flanges, bolts, nuts, hardware, pipe supports/assemblies, valves, air release assemblies, manways, joints and appurtenances associated with the pipeline. The flexible material of the expansion joints (webbing) shall not be coated and shall be protected during blasting and coating to prevent damage and/or overspray to the webbing. The pipeline generally consists of approximately the following: 725 linear feet of existing and new 48-inch steel pipe, four (4) expansion joints, eight (8) flange faces each with 44 bolts/nuts each, two (2) 24-inch manway flanges with 20 bolts/nuts each, two (2) CAV assemblies, 13 lower roller pipe support assemblies, and four (4) upper roller support assemblies with frames.

C. Contractor is responsible for verifying all quantities, sizes and requirements for the pipeline and shall price his work to provide a complete project. Differences or discrepancies between project information provided herein or on the construction documents and the actual project conditions shall not entitle the Contractor to additional compensation.

1.2 REFERENCE SPECIFICATIONS AND STANDARDS

A. Without limiting the general aspects of other requirements of these specifications, all surface preparation, coating and painting of interior and exterior surfaces and inspection shall conform to the applicable requirements of SSPC (Society for Protective Coatings), NACE International, ASTM (American Society for Testing and Materials), AWWA and the manufacturer's printed instructions. 1. ASTM (American Society for Testing and Materials)

a. ASTM D 520 Standard Specification for Zinc Dust Pigment b. ASTM D 4417 Standard Test Methods for Field Measurement of Surface Profile of

Blast Cleaned Steel c. ASTM E 337 Standard Practice Test Method for Measuring Humidity with a

Psychrometer d. ASTM D2200 Standard Methods of Evaluating Degree of Rusting on Painted

Surfaces e. ASTM D6386 Standard Practice for Preparation of Zinc (Hot-Dip Galvanized) Coated

Iron and Steel Product and Hardware Surfaces for Painting 2. ANSI (American National Standards Institute)

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a. ANSI/ASC 29.4 Exhaust Systems, Abrasive Blasting Operations – Ventilation and Safe Practice

b. ANSI/NSF Standard 61 Drinking Water Components 3. AWWA (American Water Works Association)

a. AWWA D 102, Coating Steel Water Storage Tanks 4. Consumer Product Safety Act, Part 1303 5. ICRI (International Concrete Restoration Institute)

a. Technical Guideline No. 310.2-1997, Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymer Overlays

6. NACE International a. NACE Publication TPC2 Coatings and Linings for Immersion Service: Chapter 1

Safety, Chapter Surface Preparation, Chapter 3 Curing, and Chapter 4 Inspection b. NACE Standard SP0178 Standard Recommended Practice – Fabrication Details,

Surface Finish Requirements and Proper Design Considerations for Tanks and Vessels to be Lined for Immersion Service

c. NACE Standard SP0188 Standard Recommended Practice – Discontinuity (Holiday) Testing of Protective Coatings

d. NACE Standard RP0287 Field Measurement of Surface Profile of Abrasive Blast-Cleaned Steel Surfaces Using a Replica Tape

e. NACE Standard RP0288 Standard Recommended Practice, Inspection of Linings on Steel and Concrete

7. OSHA (Occupational Safety & Health Administration) a. 1915.35 Standards – 29 CFR – Painting

8. SSPC (Society for Protective Coatings) a. SSPC-SP2, Hand Tool Cleaning b. SSPC-SP3, Power Tool Cleaning c. SSPC-SP11, Power Tool Cleaning to Bare Metal d. SSPC-SP13, Surface Preparation of Concrete e. SSPC-PA-1, Shop, Field and Maintenance Painting f. SSPC-PA-2, Measurement of Dry Film Thickness with Magnetic Gages g. SSPC-PA-3, Guide to Safety in Paint Application h. SSPC-Guide 12, Guide for Illumination of Industrial Painting Project i. SSPC-VIS 1-89, Pictorial Surface Preparation Standards for Painting Steel Surfaces j. SSPC Paint Spec 36, Two Component Weatherable Aliphatic Polyurethane Topcoat,

Performance-Based 9. SSPC/NACE Joint Standards

a. SSPC-SP5/NACE 1, White Metal Blast Cleaning b. SSPC-SP6/NACE 3, Commercial Blast Cleaning c. SSPC-SP7/NACE 4, Brush-Off Blast Cleaning d. SSPC-SP10/NACE 2, Near-White Metal Blast Cleaning e. SSPC-SP13/NACE 6, Surface Preparation of Concrete

10. NAPF (National Association of Pipe Fabricators) a. NAPF 500-03-01, Solvent Cleaning b. NAPF 500-03-04, Abrasive Blast Cleaning for Ductile Iron Pipe c. NAPF 500-03-05, Abrasive Blast Cleaning for Cast Ductile Iron Fittings

B. The Engineer's decision shall be final as the interpretation and/or conflict between any of the referenced specifications and standards contained herein.

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1.3 CONTRACTOR

A. The Contractor shall have three years practical experience and successful history in the application of specified product to surfaces of steel water tanks and pipelines. Upon request, he shall substantiate this requirement by furnishing a list of references and job completions.

B. The Contractor shall submit with his bid a written statement by the coatings manufacturer stating that the Contractor is familiar with the materials specified and has workers capable of performing the work specified herein.

C. The personnel performing the work shall be knowledgeable and have the required experience and skill to adequately perform the work for this project, in accordance with SSPC-PA1, “Shop, Field and Maintenance Painting”.


A. General: Quality assurance procedures and practices shall be utilized to monitor all phases of surface preparation, application and inspection throughout the duration of the project. Procedures or practices not specifically defined herein may be utilized provided they meet recognized and accepted professional standards and are approved by the Engineer.

B. Surface Preparation: Surface preparation will be based upon comparison with: "Pictorial Surface Preparation Standards for Painting Steel Surfaces: SSPC-VIS 1-89”, ASTM Designation D2200-95, "Pictorial Surface Preparation Standards for Painting Steel Surfaces”, ASTM D 4417-91, Method A and/or Method C “Field Measurement of Surface Profile of Blast Cleaned Steel” or NACE Standard RP0287-87 “Field Measurement of Surface Profile of Abrasive Blast Cleaned Steel Surfaces Using a Replica Tape". Surface preparation of concrete will be based on comparison with ICRI Technical Guideline 310.2-1997 comparators in conjunction with SSCP-SP13. In all cases the written standard shall take precedence over the visual standard. In addition, NACE Standard SP0178, “Fabrication Details, Surface Finish Requirements, and Proper Design Considerations for Tanks and Vessels to be Lined for Immersion Service”, along with the Visual Comparator, shall be used to verify the surface preparation of welds.

C. Application: No coating or paint shall be applied when: 1) the surrounding air temperature or the temperature of the surface to be coated or painted is below the minimum surface temperature for the products specified herein, 2) rain, snow, fog or mist is present, 3) the surface temperature is less than 5°F above the dew point, 4) the air temperature is expected to drop below the minimum temperature for the products specified within six hours after application of coating. Dewpoint shall be measured by use of an instrument such as a Sling Psychrometer in conjunction with U.S. Department of Commerce Weather Bureau Psychometric Tables. If any of the above conditions are prevalent, coating or painting shall be delayed or postponed until conditions are favorable. The day's coating or painting shall be completed in time to permit the film sufficient drying time prior to damage by atmospheric conditions.

D. Coating Thickness: Thickness of coatings and paint shall be measured/checked according to the procedures outlined in SSPC-PA 2 “Measurement of Dry Film Thickness with Magnetic Gages”, May 2012 Edition. Dry film thickness shall be a Level 2 as defined in Paragraph 9.2, excepting that no single gage reading shall be less than 80% of the specified dry film

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thickness. Areas that fail to meet these criteria shall be corrected at no expense to the Owner. Use of an instrument such as a Tooke Gauge, precision groove grinder, etc. is permitted if a destructive test is deemed necessary by the Engineer and the total DFT is less than 50 mils.

E. Holiday (Pinhole) Testing: The integrity of coated surfaces scheduled for immersion shall be tested for holidays in accordance with NACE Standard SP0188. For dry films less than 20 mils, a non-destructive holiday detector shall not exceed 67.5 volts, nor shall destructive holiday detector exceed the voltage recommended by the manufacturer of the coating system. A solution of 1-ounce non-sudsing type wetting agent, such as Kodak Photo-Flo, and 1-gallon of tap water shall be used to perform the holiday testing. For coating thickness at 20 mils and greater, a high voltage Tinker & Rasor AP/W holiday tester shall be used. Contact coating manufacturer for voltage recommendations and curing parameters. 1. All pinholes and/or holidays shall be marked and repaired in accordance with the

manufacturer's printed recommendations and retested. No pinholes or other irregularities will be permitted in the final coating.

F. Inspection Devices: The contractor shall furnish, until final acceptance of coating and painting is accepted, inspection devices in good working condition for detection of holidays and measurement of dry film thickness of coating and paint. The Contractor shall also furnish U.S. Department of Commerce, National Bureau of Standards certified thickness calibration plates and/or plastic shims, depending upon the thickness gauge used, to test the accuracy of dry film thickness gauges and certified instrumentation to test the accuracy of holiday detectors. Dry film gauges and holiday detectors shall be made available for the Engineer's use at all times until final acceptance of application. Holiday detection devices shall be operated in the presence of the Engineer.

G. Inspection: Inspection for this project shall consist of ‘hold point’ inspections. The Engineer or his representative shall inspect the surface prior to abrasive blasting, after abrasive blasting but prior to application of coating materials, and between subsequent coats of material. Final inspection shall take place after all coatings are applied, but prior to placing the tank in service. If applicable, Contractor will insure that sufficient rigging is in place so that the Engineer or his representative shall be able to conduct the required inspections.

H. Warranty Inspection: Warranty inspection shall be conducted during the eleventh month following acceptance of all coating and painting work. All defective work shall be repaired in accordance with this specification and to the satisfaction of the Engineer and/or Owner.

1.5 SAFETY AND HEALTH REQUIREMENTS

A. General: In accordance with requirements set forth by regulatory agencies applicable to the construction industry and manufacturer's printed instructions and appropriate technical bulletins and manuals, the Contractor shall provide and require use of personal protective lifesaving equipment for persons working on or about the project site.

B. Head and Face Protection and Respiratory Devices: Equipment shall include protective helmets which shall be worn by all persons while in the vicinity of the work. In addition, workers engaged in or near the work during sandblasting shall wear eye and face protection

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devices and air purifying half mask or mouthpiece respirators with appropriate filters. Barrier creams shall be used on any exposed areas of skin.

C. Ventilation: Where ventilation is used to control hazardous exposure, all equipment shall be explosion-proof. Ventilation shall reduce the concentration of air contaminants to a degree a hazard does not exist. Air circulation and exhausting of solvent vapors shall be continued until coatings have fully cured.

D. Sound Levels: Whenever the occupational noise exposure exceeds maximum allowable sound levels, the Contractor shall provide and require the use of approved ear protection devices.

E. Illumination: Adequate illumination shall be provided while work is in progress, including explosion-proof lights and electrical equipment. Whenever required by the Engineer, the Contractor shall provide additional illumination and necessary supports to cover all areas to be inspected. The level of illumination for inspection purposes shall be determined by the inspector.

F. Temporary Ladders and Scaffolding: All temporary ladders and scaffolding shall conform to applicable safety requirements. They shall be erected where requested by the Engineer to facilitate inspection and be moved by the Contractor to locations requested by the Engineer.

1.6 PRODUCT DELIVERY, STORAGE & HANDLING

A. All materials shall be brought to the jobsite in original sealed containers. They shall not be used until the Engineer has inspected the contents and obtained data from information on containers or label. Materials exceeding storage life recommended by the manufacturer shall be rejected.

B. All coatings and paints shall be stored in enclosed structures to protect them from weather and excessive heat or cold. Flammable coatings and paints must be stored to conform with City, County, State and Federal safety codes for flammable coating or paint materials. At all times coatings and paints shall be protected from freezing.

PART 2 - MATERIALS

2.1 ACCEPTABLE MANUFACTURERS

A. Materials specified are those that have been evaluated for the specific service. Products of the Tnemec Company, Inc. are listed to establish a standard of quality. Equivalent materials of other manufacturer's may be submitted on written approval of the Engineer. As part of the proof of equality, the Engineer will require at the cost of the Contractor, certified test reports from a nationally known, reputable and independent testing laboratory conducting comparative tests as directed by the Engineer between the product specified and the requested substitution.

B. Requests for substitution shall include manufacturer's literature for each product giving name, product number, generic type, descriptive information, solids by volume, recommended dry film thickness and certified lab test reports showing results to equal the

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performance criteria of the products specified herein. In addition, a list of five projects shall be submitted in which each product has been used and rendered satisfactory service.

C. All requests for product substitution shall be made at least 14 days prior to the date work is scheduled to begin by Contractor.

D. Any material savings shall be passed to the owner in the form of a contract dollar reduction.

E. Manufacturer's color charts shall be submitted to the Engineer at least 14 days prior to coating and/or paint application. General Contractor and Painting Contractor shall coordinate work so as to allow sufficient time (normally seven to ten days) for paint to be delivered to the job site.

2.2 GENERAL REQUIREMENTS

A. All materials shall be lead-free as defined by the Consumer Product Safety Act, Part 1303.

B. All zinc dust pigment contained in any zinc-rich material shall meet the requirements of ASTM D520 Type III as regards zinc content and purity.

C. All materials for the interior wetted portion of raw and treated water tanks and other equipment shall meet the requirements of ANSI/NSF Standard 61 for potable water contact.

D. No coatings shall contain Methylene Dianiline (MDA). All coatings, including all colors, shall be lead-free.

E. All catalyzed polyurethane products shall meet the minimum requirements of SSPC Paint Specification Number 36, Level 3 Performance Level.

F. No coating shall contain MOCHA.

2.3 MATERIAL PREPARATION

A. Mix and thin materials according to manufacturer's latest printed instructions.

B. Do not use materials beyond manufacturer's recommended shelf life.

C. Do not use mixed materials beyond manufacturer's recommended pot life.

D. Do not split kits of multi-component products.

2.4 48-INCH STEEL PIPE COATING SCHEDULE (EXISTING AERIAL PIPING)

A. The number of coats called for in this schedule shall be considered minimum. If more coats are required for complete coverage and uniform appearance, they shall be applied at no additional cost to the Owner. Colors will be selected by the Owner from standard manufacturer's color samples

B. Ferrous Metal Welded and Flanged Pipe Exterior:

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1. Surface Preparation Prior to Abrasive Blast Cleaning: Weld flux and spatter shall be removed by power tool cleaning. Sharp projections shall be ground to a smooth contour. All welds shall be ground to a smooth contour as per NACE Standard SP0178, Designation D.

2. Surface Preparation: SSPC-SP7 Brush Off Blast Cleaning. Anchor profile shall be 1.5 to 2.0 mils as per ASTM D 4417, Method C or NACE Standard RP0287.

3. Coating System: a. First Coat: Tnemec Series 1-Omnithane applied at 2.5 to 3.5 dry mils. b. Second Coat: Tnemec Series 135 Chembuild applied at 4.0 to 6.0 dry mils. c. Third Coat: Tnemec Series 1074U Endura-Shield II applied at 2.0 to 3.0 dry mils. d. Total dry film thickness shall be a minimum of 8.5 mils.

4. The first coat of Series 1 is only required over bare metal. For areas with tightly adhered old coating only the second and third coat are required. The surface prep standard is the same for all areas.

C. Ferrous Metal Welded and Flanged Pipe Interior: 1. Existing pipe interior coating (cement mortar lining) shall remain. New welded joints or

at existing locations called out on the construction drawings shall receive mortar lining repair at the joints as detailed in the construction drawings.

2.5 48-INCH STEEL PIPE COATING SCHEDULE (NEW AERIAL PIPING)

A. The number of coats called for in this schedule shall be considered minimum. If more coats are required for complete coverage and uniform appearance, they shall be applied at no additional cost to the Owner. Colors will be selected by the Owner from standard manufacturer's color samples

B. Ferrous Metal Welded and Flanged Pipe Exterior: 1. Surface Preparation Prior to Abrasive Blast Cleaning: Weld flux and spatter shall be

removed by power tool cleaning. Sharp projections shall be ground to a smooth contour. All welds shall be ground to a smooth contour as per NACE Standard SP0178, Designation D.

2. Surface Preparation: Abrasive blast uniformly and thoroughly as per ASTM D6386 to provide tooth and anchor. Anchor profile shall be angular with a minimum 3.0 mil profile. Clean all rusted or bare metal areas as per SSPC-SP10 Near-White Metal Blast Cleaning providing a minimum 3.0 mil angular anchor profile.

3. Coating System: a. First Coat: Tnemec Series 94-H2O Hydro-Zinc applied at 3.0 to 4.0 dry mils. Thin

only with approved thinner, Tnemec 41-2 or 41-3 Thinner. b. Second Coat: Tnemec Series 66HS Hi-Build Epoxoline applied at 4.0 to 6.0 dry mils.

(Two coats required if applied by roller.) c. Third Coat: Tnemec Series 1074U Endura-Shield II applied at 3.0 to 5.0 dry mils.

Thin only with approved thinner, Tnemec 41-42 Thinner for spray or 41-39 Thinner for brush and roller. (Two coats required if applied by roller.)

d. Total dry film thickness shall be a minimum of 9.0 mils. e. The first coat and surface preparation may be executed at the pipe manufacturer‘s

facility. Any touch ups required due to damage in shipping, installation, etc., shall be completed using the same preparation and coating.

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C. Ferrous Metal Welded and Flanged Pipe Interior: 1. New steel pipe interior coating shall be installed at the pipe manufacturer’s facility.

New welded joints or at existing locations called out on the construction drawings shall receive mortar lining repair at the joints as detailed in the construction drawings. All interior lining shall be as specified in Section 33 05 24 and 09 96 00.

PART 3 - EXECUTION

3.1 GENERAL

A. All surface preparation, coating and painting shall conform to applicable standards of the Society for Protective Coatings, NACE International and the manufacturer's printed instructions. Materials applied to the surface prior to the approval of the Engineer shall be removed and re-applied to the satisfaction of the Engineer at the expense of the contractor.

B. All work shall be performed by skilled craftsmen qualified to perform the required work in a manner comparable with the best standards of practice. Continuity of personnel shall be coordinated with the Engineer.

C. The Contractor shall provide a supervisor at the work site during cleaning and application operations. The supervisor shall have the authority to sign and change orders, coordinate work and make decisions pertaining to the fulfillment of the contract.

D. Dust, dirt, oil, grease or any foreign matter that will affect the adhesion or durability of the coating or paint must be removed by washing with clean rags dipped in an approved cleaning solvent and wiped dry with clean rags.

E. Coating and painting systems include surface preparation, prime coating and finish coatings. Unless otherwise approved in writing by the Engineer, prime coating shall be field applied. Where prime coatings are shop applied, the Contractor shall instruct suppliers to provide the prime coat specified herein. Any off-site work which does not conform to this specification, is subjected to damage during transportation, construction or installation, shall be thoroughly cleaned and touched-up in the field as directed by the Engineer. The Contractor shall use repair procedures which insure the complete protection of all adjacent primer. The specified repair method and equipment may include wire brushing, hand or power tool cleaning, or dry air blast cleaning. In order to prevent injury to surrounding painted surfaces, blast cleaning may require use of lower air pressure, smaller nozzle and/or abrasive blast particles, or shorter blast nozzle distances from surface shielding and masking. If damage is too extensive or uneconomical to touch-up, the entire item shall be blasted and then coated or painted as directed by the Engineer.

F. The Contractor's coating and painting equipment shall be designed for application of materials specified and shall be maintained in first class working condition. Contractor's equipment shall be subject to approval of the Engineer.

G. Application of the first coat shall follow immediately after surface preparation and cleaning and stripe coat, if applicable, before rust bloom occurs or the same day, whichever is less. Any cleaned areas not receiving first coat within this period shall be recleaned prior to application of first coat.

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H. Prior to assembly, all surfaces made inaccessible after assembly shall be prepared as specified herein and shall receive the coating or paint system specified.

3.2 SURFACE PREPARATION

A. The latest revision of the following surface preparation specifications of the Society for Protective Coatings (SSPC) shall form a part of this specification. The summaries listed below are for informational purposes; consult the actual SSPC specification for full detail. 1. Solvent Cleaning (SSPC-SP1): Removal of oil, grease, soil and other contaminants by use

of solvents, emulsions, cleaning compounds, steam cleaning or similar materials and methods which involve a solvent or cleaning action.

2. Hand Tool Cleaning (SSPC-SP2): Removal of loose rust, loose mil scale and other detrimental foreign matter to degree specified by hand chipping, scraping, sanding and wire brushing.

3. Power Tool Cleaning (SSPC-SP3): Removal of loose rust, loose mil scale and other detrimental foreign matter to degree specified by hand chipping, scraping, sanding and wire brushing.

4. White Metal Blast Cleaning (SSPC-SP5/NACE 1): Blast cleaning to a gray-white uniform metallic color until each element of surface area is free of all visible residues.

5. Commercial Blast Cleaning (SSPC-SP6/NACE 3): The removal of all visible oil, grease, dirt, dust, mil scale, rust, paint, oxides, corrosion products and other foreign matter by compressed air nozzle blasting centrifugal wheels or other specified method. Discoloration caused by certain stains shall be limited to no more than 33% of each square inch of surface.

6. Brush-Off Blast Cleaning (SSPC-SP7/NACE 4): Blast cleaning to remove loose rust, loose mil scale and other detrimental foreign matter degree specified.

7. Near White Blast Cleaning (SSPC-SP10/NACE 2): The removal of all visible oil, grease, dirt, dust, mil scale, rust, paint, oxides, corrosion products and other foreign matter by compressed air nozzle blasting, centrifugal wheels or other specified method. Discoloration caused by certain stains shall be limited to no more than 5% of each square inch of surface area.

8. Power Tool Cleaning to Bare Metal (SSPC-SP11): Power tool cleaning to produce a bare metal surface and to retain or produce a minimum 1.0 mil surface profile. This standard is suitable where a roughened, clean, bare metal surface is required, but where abrasive blasting is not feasible or permissible.

9. Surface Preparation of Concrete (SSPC-SP13/NACE 6): Surface preparation of concrete by mechanical, chemical, or thermal methods prior to the application of bonded protective coating or lining systems.

B. Slag, weld metal accumulation and spatters not removed by the Fabricator, Erector or Installer shall be removed by chipping and/or grinding. All sharp edges shall be peened, ground or otherwise blunted as required by the Engineer. All grinding and finishing of welds, edges, etc. shall be performed prior to solvent cleaning and abrasive blasting. Welds shall be prepared as per NACE Standard SP0178 for all interior and exterior surfaces as specified in Section 2.0. Minimum acceptable level of finish shall be Designation “D” unless specified otherwise.

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C. Concrete surfaces shall be abrasive blasted to produce a minimum surface profile of equal to 40 grit sandpaper with no loose concrete remaining. This preparation will be followed by vacuum cleaning to remove all dust, dirt or friable substances leaving clean, dust free surfaces for resurfacing. Concrete surfaces rubbed smooth shall not be considered an acceptably prepared surface. 1. Prepare concrete surfaces in accordance with manufacturer’s instructions, SSPC-SP

13/NACE 6 and ICRI Technical Guideline 310.2-1997. 2. Allow concrete to cure for a minimum of 28 days. 3. Test concrete for moisture in accordance with ASTM D 4263 and F 1869. 4. Abrasive blast surface to remove laitance and solid contaminants and to provide clean,

sound substrate with uniform anchor profile. 5. Fill holes, pits, voids, and cracks with Tnemec Series 218 MortarClad. 6. Ensure surfaces are clean, dry, and free of oil, grease, chalk, form release agents, and

other contaminants.

D. Field blast cleaning for all surfaces shall be by dry method unless otherwise directed. Blast nozzles shall be venturi-type nozzles with a minimum pressure at the nozzle of 90 psi.

E. Particle size of abrasives used in blast cleaning shall be that which will produce a 1.5 – 3.0 mil (37.5 microns - 65.0 microns) surface profile or in accordance with recommendations of the manufacturer of the specified coating or paint system to be applied. If the profile of the blasted steel exceeds the profile specified above, the Contractor shall be required to do one or both of the following: 1. Reblast the surface using a finer aggregate in order to produce the required profile. 2. Apply a thicker prime coat, if possible, given the limitations of the products being

applied, in order to adequately cover the blast profile

F. Abrasive used in blast cleaning operations shall be new, washed, graded and free of contaminants that would interfere with adhesion of coating or paint and shall not be reused unless specifically approved in writing by the Engineer.

G. During blast cleaning operations, caution shall be exercised to insure that existing expansion joint rubberized webbings, coatings, paint and other surfaces not to receive coatings and surface preparation are not exposed to abrasion from blast cleaning. Contractor shall install guards or barriers to protect all surfaces not scheduled to receive surface preparation or coatings. Contractor is responsible to confirm the schedule of those surface to receive surface preparation and /or coatings and those not scheduled to receive surface preparation and/or coatings.

H. The Contractor shall keep the area of his work and the surrounding environment in a clean condition. He shall not permit blasting materials to accumulate as to constitute a nuisance or hazard to the accomplishment of the work, the operation of the existing facilities or to the surrounding environment. Contractor shall install tarps or other ground covering means/methods to collect all blasting material and properly remove used blast materials/media from the work site. Contractor shall not allow blasting media to accumulate on the bare ground.

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I. Blast cleaned surfaces shall be cleaned prior to application of specified coatings or paint. All surfaces shall be free of dust, dirt, and other residue resulting from the abrasive blasting operation. No coatings or paint shall be applied over damp or moist surfaces.

J. All welds shall be neutralized with a suitable chemical compatible with the specified coating or paint.

K. Pitted areas on ferrous metal scheduled for immersion shall be repaired by either filling with Tnemec Series 215 Surfacing Epoxy or Series FC22 Epoxoline (floors) or by welding. Epoxy filler shall be feathered smooth. No protrusions or spatter will be allowed. Pits deeper than 1/8” shall be filled by welding.

L. Specific Surface Preparation: Surface preparation for the specific system shall be as noted in Sections 2.04.

3.3 APPLICATION, GENERAL

A. Coating and paint application shall conform to the requirements of the Steel Structure Painting Council Paint Application Specification SSPC-PA1, latest revision, for "Shop, Field and Maintenance Painting".

B. Thinning shall be permitted only as recommended by the manufacturer and approved by the Engineer.

C. Each application of coating or paint shall be applied evenly, free of brush marks, sags, runs, with no evidence of poor workmanship. Care shall be exercised to avoid lapping on glass or hardware. Coatings and paints shall be sharply cut to lines. Finished surfaces shall be free from defects or blemishes.

D. Protective coverings or drop cloths shall be used to protect floors, fixtures and equipment. Care shall be exercised to prevent coatings or paints from being spattered onto surfaces which are not to be coated or painted. Report to the Engineer surfaces from which materials cannot be satisfactorily removed.

E. When two coats of coating or paint are specified, where possible, the first coat shall contain sufficient approved color additive to act as an indicator of coverage or the two coats must be of contrasting color.

F. Film thickness per coat as specified in Sections 2.04 are the minimum required. For roller/brush application (any non-spray application), the Contractor shall apply additional coats as to achieve the specified thickness.

G. All material shall be as specified.

3.4 COATING SYSTEMS APPLICATION

A. After completion of surface preparation as specified for the specific system, materials shall be applied as noted in Sections 2.04.

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B. Spray application shall not be allowed on this project. Care shall be taken so as to eliminate overspray/splatter and dry spray. Where such conditions are encountered, the surface shall be cleaned of all over spray and dry spray prior to the application of the succeeding coat.

C. Areas rendered inaccessible after erection shall receive the full coating system prior to erection and/or assembly.

D. Structures Within One-Half Mile of Coast: Exterior surfaces that have been coated on a previous day shall be rinsed with clean potable water and allowed to dry before applying subsequent coat(s). Cleaned surfaces, which are not coated the day of cleaning shall be recleaned prior to applying coatings.

3.5 COLOR SCHEME

A. The Engineer shall select colors for the project. The Contractor shall submit current charts of the manufacturer's available colors to the Engineer fourteen (14) days minimum prior to the start of coating and painting.

3.6 SOLVENT VAPOR REMOVAL (for interior application only)

A. All solvent vapors shall be completely removed by suction-type exhaust fans and blowers before placing closed structures in operating service.

B. All solvent vapors will be exhausted both during and after coating application as per AWWA D 102 to allow the proper curing of the coating material.

C. Ventilation shall be continued until such time as the coating has reached “full cure” as specified by the coating manufacturer.

3.7 REPAIRS

A. After the interior coating system has been installed and holiday tested, repair pinholes and voids as follows: 1. Abrasive blasting shall be in accordance with SSPC-SP10/NACE No.2 Near White Blast

Cleaning obtaining a minimal surface profile as specified herein. 2. Power tool cleaning shall be in accordance with SSPC-SP11 Power Tool Cleaning to Bare

Metal. Surface profile shall be angular and not less than the surface profile as specified herein.

3. All edges of remaining sound, tightly adhering coating shall be feathered back (beveled) to create a smooth transition from the substrate to the coatings surface. The coating may be considered tightly adhering if an edge cannot be lifted with a dull putty knife.

4. Install the coating system as specified herein to provide a complete and monolithic system, free of voids and pinholes.

B. For exterior surfaces, repair as follows: 1. Hand or Power Tool Sand as per SSPC-SP2 or SP3 to remove the defect. In cases where

the defect extends to the substrate, prepare the surface as per SSPC-SP11 Power Tool Cleaning to Bare Metal, obtaining a minimum anchor profile as specified herein.

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2. All edges of remaining sound, tightly adhering coating shall be feathered back (beveled) to create a smooth transition from the substrate to the coatings surface. The coating may be considered tightly adhering if an edge cannot be lifted with a dull putty knife.

3. Install the coating system as specified herein to provide a complete and monolithic system, free of voids and pinholes.

3.8 CLEAN UP

A. Upon completion of the work, all staging, scaffolding and containers shall be removed from the site or destroyed in a manner approved by the Engineer. Coating or paint spots or oil stains upon adjacent surfaces shall be removed and the jobsite cleaned. All damage to surfaces resulting from the work of this section shall be cleaned, repaired or refinished to the satisfaction of the Engineer at no cost to the Owner.

END OF SECTION

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August 2019 Addendum 1 Project CWAC1900467 Steel Pipe For Water Transmission 33 05 25 - 1

SECTION 33 05 25

STEEL PIPE FOR WATER TRANSMISSION

PART 1 GENERAL

1.01 SCOPE OF WORK

A. Provide all labor, materials, equipment, steel pipe, mortar-lined, polyurethane-coated with welded joints as designed, manufactured, incidentals required to install mortar lined and polyurethane coated steel pipe and fittings in accordance with the Contract Documents, and installed per ANSI/AWWA C200, C205, C206, C207, C208, C214, C222, C602, C604 (Installation of Steel Pipe), and AWWA Manual M11 as modified by the Contract Documents, the manufacturer’s recommendations, and these specifications. It also includes supervision necessary to make the installation compete.

B. A single Manufacturer shall be responsible for furnishing all the mortar-lined and polyurethane-coated steel pipe and smaller diameter appurtenant steel pipe. Manufacture of steel pipe and specials shall be under the direction and management of one steel Manufacturer only. This does not prevent a separate supplier from manufacturing specials or fittings; however, all Work shall be the responsibility of one manufacturer of the water piping. No ocean going shipment of pipe will be allowed. Shipment by rail will be allowed only if manufacturer can satisfactorily demonstrate via a submittal that shipped items will not be damaged during rail shipment and transport to the job site. The responsibility of the Manufacturer shall include, at a minimum:

1. Certify all pipe, fittings and specials are being manufactured in full accordance with the Contract Documents.

2. Manage the design and fabrication of the pipe and specials.

3. Prepare and submit all submittal information and shop drawings.

4. Make any corrections that may be required to the submittal information and shop drawings.

C. As part of the Contractor’s Bid Documents, submit the following manufacturer information. Verification of items below will be conducted as part of the Bid Document review process for steel pipe and the Contractor’s preliminary schedule.

1. Years of Experience. Submit written verification that the pipe manufacturer has been manufacturing ANSI/AWWA C200 pipe with cement mortar-lining and polyurethane coating and similar design pressure as this Project for a minimum of 5 years.

2. Project Experience. Submit written verification that the pipe manufacturer has produced a minimum of 20,000 linear feet of 48-inch or larger pipe, with wall thickness of 0.25-inch or greater. Submit reference names, telephone numbers, and descriptions of projects for pipe conforming to ANSI/AWWA C200 and this requirement. Descriptions for applicable projects shall include, but not be limited to, length, diameter, wall thickness, lining and coating materials, steel metallurgy, location of facility where pipe was manufactured and names and titles of key plant personnel involved with the Work.

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1.02 RELATED WORK

A. Section 01 33 00 Submittal Procedures

B. Section 01 40 00 Quality Requirements

C. Section 01 60 00 Product Requirements

D. Section 09 96 00 High Performance Coatings

E. Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main

F. Section 31 23 33 Trenching and Backfilling

G. Section 33 11 13.10 Public Water Utility Piping,

H. Section 33 13 00 Disinfecting of Water Utility Distribution

1.03 SUBMITTALS

A. Certified Affidavits of Compliance. Contractor shall submit all certified affidavits of compliance for each portion of Work for which Contractor is requesting payment before acceptance of such payment will be made. Performing and paying for sampling and testing as necessary for the certified affidavits of compliance are the Contractor’s responsibility. The following certified affidavits of compliance are required for all pipe and other products or materials furnished under this Section of the Contract Documents, as specified in ANSI/AWWA C200 and in accordance to specification Section 01 33 00 Submittals:

1. Mill Certificates. Material lists and steel reinforcement schedules which describe all materials to be utilized. Metallurgical test reports for steel proposed for use on the Project. Chemical and physical test reports from each heat of steel that indicate the steel conforms to the Contract Documents. Records shall indicate heat of steel for each pipe joint listed in the paragraph Line Layout Information. Within thirty (30) days of manufacture, the Contractor shall submit the Manufacturer’s example of how the heat of steel will be tracked to each installed section of pipe and fitting.

2. List cross-referencing pipe mark numbers with pipe sequence numbers

3. Hydrostatic test reports.

4. Results of production weld tests.

5. Sand, cement and mortar tests.

6. Rubber gasket tests and gaskets certification by Manufacturer, including a written statement from the gasket material manufacturer, certifying that the gasket materials are compatible with the joints specified field test pressure and service condition.

7. A Certified Test Report from the polyurethane coating manufacturer indicating that the coatings were applied in accordance with the manufacturer's requirements and in accordance with this Section and Section 09 96 00, High Performance Coatings and Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main on all pipe, fittings and joints made in the factory and in the field. Full time factory quality control tests for tape or polyurethane coating are required.

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8. Coating applicator shall submit a typical QA/QC inspection form during the submittal process.

9. The coating applicator shall submit daily inspection reports within one week of the inspection date to the Owner’s Representative.

10. All welds were performed in conformance with these Contract Documents.

11. Provide certification stating that the instructions and requirements of the lining and coating materials manufacturer will be followed and that the lining and coating materials manufacturer is acceptable to the Manufacturer.

B. Shop Drawings. The Contractor shall submit Shop Drawings of pipe in accordance with the requirements in Section 01 33 00 – Submittal Procedures, the requirements of ANSI/AWWA C200 and the following supplemental requirements:

1. Certified dimensional drawings of all pipe, fittings and appurtenances.

2. Base stationing and elevation convention as shown on drawings.

3. Maximum Laying Lengths: Select lengths to accommodate installation operation.

4. Specific number, location, and direction of each pipe, joint, and fitting or special. Number each pipe in installation sequence.

5. Station and invert elevation at changes in grade or horizontal alignment.

6. Station and invert elevation to which bell end of each pipe will be laid.

7. Elements of curves and bends, both in horizontal and vertical alignment.

8. Location of mitered pipe sections, beveled ends for alignment conformance, butt straps, and deep bell lap joints for temperature stress control.

9. Location of closures, cutoff sections for length adjustment, temporary access manways, vents, and welds lead outlets for construction convenience.

a. Provide for adjustment in pipe laying headings and to conform to indicate stationing.

b. Changes in pipe section location will require Owner’s Representative’s written approval.

10. Location of bulkheads, both those shown and/or required for hydrostatic testing of pipeline.

11. Locations of valves, manholes, and other mechanical equipment.

12. Location and design of all thermal control joints.

13. Production schedule for manufacturing/fabricating pipe for the Work as part of Contractor’s schedule. Steel pipe production schedule shall be included in all versions of the Contractor’s schedule beginning with the first schedule submittal.

14. Joint and pipe wall construction details which indicate the type and thickness of cylinder; the position, type, all size and area of wire or other reinforcement; coating and lining holdbacks; manufacturing tolerances; maximum angular joint deflection limitations; and all other pertinent information required for the manufacture and installation of the product. Joint details and design calculations shall be submitted for all welded joint types, including beveled ends for alignment conformance and deep butt strap joints required for control of temperature stresses as applicable. The Manufacturer shall submit performance data indicating that the proposed joint has performed satisfactorily under similar conditions. In the absence of a history of field performance, the results of a test program shall be submitted.

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15. Pipe design criteria including a complete stress analysis of each section of pipe wall, girth joints, restrained joints, lap joints, specials, all sufficient to ascertain conformance of pipe and fittings with the Contract Documents.

16. Closure sections and cutoffs for field length adjustment. Test bulkheads, including details for removal of test bulkheads and repair of lining. Temporary bulkheads shall be watertight.

17. Ground Profile and Utility Locations.

a. Prior to preparation of line layouts, Contractor shall verify the existing ground profile and the location and depth of all underground utilities using centerline stakes set by the Contractor at no more than 100 feet intervals. Contractor shall carefully locate and excavate utility, survey, document and submit this information to the Owner.

b. Ground profile and utility locate information shall be provided to Owner through the submittal process. Any Drawings that are modified by Owner due to adjustments in pipeline profile will be reissued to the Contractor.

18. Pipe Laying Schedule Information.

a. Pipe laying schedule and marking diagrams compatible with the requirements of AWWA Manual M11 which indicate the specific number of each pipe and fitting and the location of each pipe and the direction of each fitting in the completed line. In addition, the line layouts shall include the station and centerline or invert elevation to which the end of each pipe will be laid; all elements of curves and bends, both in horizontal and vertical alignment; and the limits within each reach of restrained and/or welded joints or of concrete encasement. The location of all mitered pipe sections, beveled ends for alignment conformance, and deep butt strap joints for temperature stress control shall be clearly indicated on the diagrams.

b. The pipe laying schedule shall have a sequence of laying and an explanation of all abbreviations used in the schedule. For long, straight pipe runs, the pipe laying schedule shall list the pipeline station and either the pipe centerline or invert elevation coordinated with the Drawings at least every 100 feet.

c. Drawings showing the location and details of bulkheads for hydrostatic testing of the pipeline and details for removal of test bulkheads and repair of the lining.

d. Details and locations of closures for length adjustment, temporary access manways, vents and weld lead pass holes as indicated and as required for construction convenience.

e. The method that the Contractor proposes to use for measuring angular deflection of pipe joints.

19. Welding Information. Submit the following prior to performing any Work:

a. Full and complete information regarding location, type, size and extent of all welds with reference called out for Welding Procedure Specifications (WPS) numbers shall be shown. The Shop Drawings shall distinguish between shop and field welds. Shop Drawings shall indicate by welding symbols or sketches the details of the welded joints and the preparation of parent metal required to make them.

b. Written welding procedures for shop and field welds including Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR). All WPS used to fabricate and install pipe shall be qualified under the provisions of ANSI/AWS D1.1 - Structural Welding Code - Steel or the ASME Boiler and Pressure Vessel Code (BPVC) for shop welds and ANSI/AWS D1.1 for field welds. Written WPS shall be required

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for all welds, both shop and field, regardless of whether they are prequalified or qualified by testing. WPS qualified per the ASME BPVC shall include Supplementary Essential Variables for notch-tough welding. All provisions of ANSI/AWS D1.1 pertaining to notch-tough welding shall apply.

Each fabricator or erector is responsible for the development of welding procedures. At a minimum, the welding procedures shall consist of the following:

(i) Electrode Specification (ANSI/AWS A5.0, A5.20, etc.)

(ii) Electrode Classification (E7018, E71T-1, etc.)

(iii) Electrode Diameter (1/8 in., 5/32 in., etc.)

(iv) Electrical Characteristics (AC, DC+, DC-)

(v) Minimum Pre-heat and Interpass Temperature

(vi) Welding Current (amperage) / Wire Feed Speed

(vii) Arc Voltage

(viii) Travel Speed

(ix) Position of Welding

(x) Number and Thickness of Weld Passes

(xi) Post Weld Heat Treatment

(xii) Shielding Gas Type Flow Rate

(xiii) Joint Design Details

(xiv) Length of Leads (Maximum length, and length used to perform test)

c. Written nondestructive testing (NDT) procedure specifications and NDT personnel qualifications.

d. Current welder performance qualifications (WPQ) shall be submitted for each welder prior to performing any Work either in the shop or field. Submit Welding Procedure Specification(s) (WPS) used for welder certifications.

e. Credentials of the Contractor’s certified welding inspectors (CWI) and quality control specialists for review prior to starting any welding in the shop or field. The credentials shall include, but not be limited to, American Welding Society QC-1 Certification. Other NDT quality control personnel shall be certified as required by ANSI/AWS D1.1.

f. Certified Test Reports for NDT data for each shop-welded and field-welded joint. This data shall include all testing on each weld joint, including re-examination of repaired welds, using visual, radiographic, magnetic particle, dye penetrant examination, ultrasonic or air test examination methods specified. Test data shall be reviewed and signed by the welding inspector(s).

g. Certified Test Reports for daily welder logs for field and shop welding. Logs shall list all welders to be used for the Work, the welding process, position, welder stamp number, certification date, certification status for each welder, test documentation, and Welder Procedure Specification.

h. Welding map showing the sequence of welds for all field welds.

i. Written weld repair procedure for each type of shop and field weld proposed for use on the Project.

j. Written rod control procedure for shop and field operations demonstrating how the Contractor intends to maintain rods in good condition throughout the Work. The rod

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control procedure shall also demonstrate how the Contractor intends to ensure that the proper rods are used for each weld.

k. Shop drawings and welding information together as a complete package. Welding Procedure shall be accepted by the Owner before welding of joints begins.

20. Control of Temperature Stresses.

a. Proposed sequencing of events to control temperature stresses in the pipe wall during installation prior to starting of any field welding.

b. Proposed sequencing of events or special techniques to minimize distortion of the steel as may result from shop welding procedures.

c. Plan for monitoring pipeline temperatures.

21. Detail drawings indicating the type, number and other pertinent details of the slings, stulling, and other methods proposed for pipe support and handling during manufacturing, transport, and installation. Documentation confirming that the handling and support system has been designed and sealed by a registered professional engineer, licensed in the State of Texas. The recommended methods of handling and placement of the pipe shall be submitted to the Owner as a record copy prior to transporting of any pipe to the Site. All pipe handling equipment and methods shall be acceptable to the Owner.

22. For record copy, detailed drawings indicating loading and shipping procedures that are designed to minimize damage to coating.

23. Manufacturer's Written Quality Assurance/Control Program.

24. Sample of pipeline marking tape.

25. Submit detail for water tight plugs per this specification, Section 2.02. Watertight plugs shall be provided to seal the pipe ends when pipe laying has stopped.

C. Contractor shall submit affidavits of compliance, shop drawings and manufacturer information for pipe coating system, as described in Section 09 96 00, High Performance Coatings and Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main.

D. Certifications

1. Mill test certificates for steel plate, steel coil and cement.

2. The Manufacturer shall perform the tests described in AWWA C200, for all pipe, fittings, and specials. The certificates shall include chemical and physical test results for each heat of steel.

3. Prior to shipment of the pipe, fittings, and specials, the Contractor/Pipe Manufacturer shall submit an affidavit certifying that the pipe, fittings, specials, and other products and materials furnished, comply this Specification, Drawings, and the applicable requirements of AWWA C200, C205, C215, and C222.

4. Lining Materials: Certificate that lining system used for all pipes and fittings is currently approved for potable water contact in accordance with NSF 61 and satisfies current applicable governmental health and safety requirements for use in potable water.

5. Gasket manufacturer shall submit written certificate that gasket material is suitable for the joints provided and service conditions specified herein and suitable for the field test pressure.

E. Reports

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1. Factory Quality Control Test Reports

a. Hydrostatic testing.

b. Chemical and physical test reports showing data consistent with specified requirements for each heat of steel proposed for use.

c. Certified test reports for welder certification for factory and field welders.

d. Certified test reports for factory welds of fittings from an Independent Certified Welding Inspector paid by the Manufacturer.

e. A certified test report from the Polyurethane coating manufacturer indicating that the coatings were applied in accordance with manufacturer’s requirements and in accordance with this Specification.

f. Letter from independent testing agency certifying that pipe furnished meets requirements of this specification.

2. Field Quality Control Test Reports

a. Weld tests, including re-examination of repaired welds, on each welded joint.

b. Field site visit letter by a qualified technical representative for the condition of lining and coating prior to installation of the pipe.

c. Cement mortar lining compressive strength tests in accordance with AWWA C205.

d. Test Report of Polyurethane Coating.

F. Field Hydrostatic Testing Plan: Submit at least 15 days prior to testing and include at least the following information:

1.04 REFERENCE STANDARDS

A. American Water Works Association (AWWA)

1. C200- Steel Water Pipe – 6 Inches and Larger

2. C205- Cement-Mortar Protective Lining and Coating for Steel Water Pipe - 4 In. and Larger - Shop Applied

3. C206- Field Welding of Steel Water Pipe

4. C207- Steel Pipe Flanges for Waterworks Service- Sizes 4 In. thru 144 In.

5. C208- Dimensions for Fabricated Steel Water Pipe Fittings

6. C210- Liquid-Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines

7. C215- Extruded Polyolefin Coatings for the Exterior of Steel Water Pipelines

8. C216- Heat-Shrinkable Cross-Linked Polyolefin Coatings for the Exterior of Special Sections, Connections, and Fittings for Steel Water Pipelines

9. C222- Polyurethane Coatings for the Interior and Exterior of Steel Water Pipe and Fittings

10. C602- Cement-Mortar Lining of Water Pipelines in Place – 4 in. and Larger

11. C604- Installation of Steel Water Pipe – 4 In. and Larger

12. M11 (Manual)- Steel Pipe - A Guide for Design and Installation

B. American Welding Society (AWS)

1. A2.4- Standard Symbols for Welding, Brazing, and Nondestructive Examination

2. A3.0- Standard Welding Terms and Definitions

3. B2.1, Specification for Welding Procedure and Performance Qualification

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4. D1.1, Structural Welding Code – Steel

5. QC 1, Standard for AWS Certification of Welding Inspectors

C. American Society for Testing and Materials (ASTM)

1. A20- Specification for General Requirements for Steel Plates for Pressure Vessels

2. A370- Test Methods and Definitions for Mechanical Testing of Steel Products

3. A435- Specification for Straight-Beam Ultrasonic Examination of Steel Plates

4. A516- Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service

5. A1018- Specification for Steel, Sheet and Strip, Heavy Thickness Coils, Hot- Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength

6. C33- Specification for Concrete Aggregates

7. C35- Specification for Inorganic Aggregates for Use in Gypsum Plaster

8. C150- Specification for Portland Cement

9. D16- Terminology for Paint, Related Coatings, Materials and Applications

10. D522- Test Methods for Mandrel Bend Test of Attached Organic Coatings

11. D2240- Test Method for Rubber Property 8212; Durometer Hardness

12. D4541- Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers

13. E165- Standard Practice for Liquid Penetrant Inspection Method

14. E329- Specification for Agencies Engaged in Construction Inspection, Testing or Special Inspection

15. E709- Standard Guide for Magnetic Particle Testing

16. E1255- Standard Practice for Radioscopy

17. E1444- Standard Practice for Magnetic Particle Testing

D. Steel Structures Painting Council (SSPC)

1. SP-1- Solvent Cleaning

2. SP-10- Near-White Blast Cleaning

3. PA/Guide 3- A Guide to Safety in Paint Application

4. PA/Guide 17- A Guide for Selecting Urethane Painting Systems

E. International Institute of Welding (IIW)

F. International Organization for Standardization (ISO)

G. NSF 61- Drinking Water System Components - Health Effects.


A. Years of Experience. Submit written verification that the pipe manufacturer has been manufacturing ASNI/AWWA C200 pipe with cement mortar-lining and polyurethane coating and similar design pressure as this Project for a minimum of 5 years.

B. Project Experience. Submit written verification that the pipe manufacturer has produced a minimum of 20,000 linear feet of 48-inch or larger pipe, with wall thickness of 0.25-inch or

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greater. Submit reference names, telephone numbers, and description of projects for pipe conforming to ANSI/AWWA C200 and this requirement. Descriptions for applicable projects shall include, but not be limited to length, diameter, wall thickness, lining and coating materials, steel metallurgy, location of facility where pipe was manufactured, and names and titles of key plant personnel involved with the work.

C. Certifications. Submit written verification that the pipe manufacturer is certified by either the Steel Plate Fabricator’s Association (SPFA) Quality Assurance Program or International Organization for Standardization (ISO) 9001 or Lloyd’s Register Quality Assurance Limited (LRQA).

D. Personnel Qualifications. Submit names, titles and qualifications of current plant personnel to be used to manufacture/fabricate pipe for the Work and the experienced pipe manufacturer’s representative proposed for onsite observation. Experience shall be applicable to the fabrication plant facilities and personnel and is not required to be specifically related to the company or corporation that currently owns the fabrication facility or employs the personnel.

E. Production and Delivery Capability. Submit written verification from the pipe manufacturer/fabricator demonstrating compliance with the production and delivery schedule of the pipe as indicated in the Contractor’s proposed schedule.

F. Inspection. All pipe, linings, coatings, welds and related work shall be subject to inspection at the place of manufacture and/or the place the Work is performed in accordance with the provisions of ANSI/AWWA C200 as supplemented by the requirements herein. The Contractor shall notify the Owner in writing not less than 14 calendar days prior to the start of any phase of the pipe manufacturing, welding, lining, coating, testing or field operations. The Contractor shall provide manufacturers’ site visits in accordance with Section 01 40 00 Quality Requirements. A pre-manufacturing inspection by the Owner is optional The Manufacturer will be required to present and demonstrate compliance with all manufacturer specifications required in this project. Personnel at the plant involved in this Project shall be in attendance. All aspects of pipe manufacture will be reviewed: welding, cement mortar lining, polyurethane coating, testing, handling, and loading and shipping.

1. Certified Welding Inspector. The Contractor shall provide a certified welding inspector(s) (CWI) for all field welding as specified in ANSI/AWWA C206, and the Manufacturer shall provide a certified welding inspector(s) (CWI) for all shop welding as specified in ANSI/AWWA C200. The CWI shall visually inspect 100 percent of all welds, verify proper procedures are being followed using qualified welders, supervise Contractor’s NDT and witness Owner’s NDT. The welding inspector(s) shall submit written certification that all welds were performed in conformance with these Contract Documents. All shop weld tests shall be reviewed and signed by the inspector(s).

2. All pipe and fittings will be inspected by Owner prior to unloading and upon delivery to the site. Any pipe not fully meeting these Contract Documents will not be paid for as Material on Site until it is repaired to within these Contract Documents.

G. Onsite Observation.

1. Manufacturer. The Manufacturer shall provide the services of an experienced, competent, and authorized field service representative who is acceptable to the Owner to be onsite for the initial installation of pipe and fittings. The field service representative

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minimum experience shall include 5 years of practical knowledge and experience installing similar-sized steel pipe with the same type of joints, linings, and coatings as the pipe to be furnished under this contract. The resume of the proposed field service representative which meets the specified minimum required experience qualifications shall be submitted for review in accordance with specification Section 01 33 00-Submittal Procedures.

For budgeting purposes, assume up to 24 hours on Site will be required for the pre-installation and initial installation of pipe and fittings. Additional periodic Site visits will be at the request and discretion of the Owner. Assume each additional Site visit will require 8 hours on Site. The field service representative duties shall include, but not be limited to, the following:

a. Observe the installation and welding of the pipe and fittings.

b. Report any concerns to the Owner. Owner may have Contractor expose buried joints in order to verify that the polyurethane coating has not been damaged due to the weld.

c. Answer questions and provide assistance to the Owner and the contractor.

d. Submit copies of all field reports and test results in accordance with Section 01 33 00 Submittal Procedures.

H. Welder Qualifications. All welding shall be done by skilled welders, welding operators, and tackers who have had adequate experience in the Welding Procedure Specification submitted and materials to be used. Welders shall be qualified by the Contractor under the provisions of ANSI/AWS D1.1 or ASME BPVC for shop welds and ANSI/AWS D1.1 for field welds. All welders shall have been certified within the last six months or shall provide a welding continuity log.

I. Shop Tests. Except as modified herein, all materials used in the manufacture of the pipe shall be tested in accordance with the requirements of ANSI/AWWA C200, as applicable. The Contractor shall be responsible for performing and paying for said material tests. The Owner shall have the right to witness all testing conducted by the Contractor; provided that the Contractor's schedule is not delayed for the convenience of the Owner. In addition to those tests specifically required, the Owner may request additional samples of any material including mixed concrete and lining and coating samples for testing by the Owner. The additional samples shall be furnished as part of the Work.

1. Weld Tests. Shop Nondestructive Testing (NDT) shall be performed for various weld categories in accordance with the requirements of ANSI/AWWA C200 and as Specified. Testing shall include submitting written documentation of procedures per Section V ASME BPVC, and acceptable criteria shall be in accordance with Section VIII of the ASME BPVC.

a. Fillet Welds. Examine 100 percent of fillet welds using the magnetic particle inspection method.

b. In all hand welding, the metal shall be deposited in successive layers. The WPS shall describe the maximum weld to be placed in each pass. Each pass except the final one, whether in butt or fillet welds, shall be thoroughly cleaned to remove dirt, slag, or flux before the succeeding bead is applied. Each pass shall be thoroughly fused into the plates at each side of the welding groove or fillet and shall not be permitted

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to pile up in the center of the weld. Undercutting along the side shall not be permitted.

Welds shall be free from pin holes, non-metallic inclusions, air pockets, undercutting and/or any other defects.

c. Welds. Manufacturer’s certified welding inspector shall visually examine 100 percent of all welds.

2. Hydrostatic Tests. After the joint configuration is completed and prior to lining with cement-mortar, each steel cylinder shall be shop tested and certified to a pressure of at least 75 percent of the minimum yield strength of the pipe steel cylinder. Test pressure shall be maintained for a minimum of 2 minutes. Factory hydrostatic tests shall be submitted as Certified Test Reports.

3. Shop Fit Test. To ensure that gasketed joints may be fully assembled and that the pipe meets the requirements of ANSI/AWWA C200, the Manufacturer shall perform a shop fit test on a minimum of five joints of each pipe size and joint type used. The joints to be tested shall be selected by the Owner based on pipe measurements. The shop fit test shall join the pipe ends in the shop with the proposed adjacent pipe end. The pipe ends shall be match marked after shop assembly. Record the actual annular space, with the data to include as a minimum:

a. Maximum space at any point.

b. Minimum space at any point.

c. Space at 90-degree intervals - top, bottom and spring line on both sides.

J. Field Tests. The following field tests shall be required. Field testing shall not damage factory applied coating system.

1. Welded Joint Tests. Contractor’s certified welding inspector shall perform a magnetic particle test and visually inspect all welds. All field-welded joints shall be tested by the Contractor using the magnetic particle inspection procedure conforming to the requirements of ANSI/ASTM E 709 “Standard Guide for Magnetic Particle Testing” and ASTM E 1444 “Standard Practice for Magnetic Particle Testing” unless otherwise specified. Additionally, butt straps shall be air tested with low pressure from a threaded fitting between the welds.

2. Holiday Tests. Holiday tests shall be required as specified in Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

3. Polyurethane Coating tests: Provide field coating tests as described in Section 09 96 00 High Performance Coatings.

4. Pipe Vertical Deflection Tests. Pipe shall be measured for deflection and shall meet the requirements in this section, unless otherwise required by Owner.

5. Hydrostatic Pressure and Leakage Tests. Hydrostatic pressure and leakage testing shall be as specified in Section 33 11 13.10 Public Water Utility Piping.

1.06 SYSTEM DESCRIPTION/DESIGN REQUIREMENTS

A. Pipe Diameter. The pipe shall be of the diameter as shown on Drawings. Unless indicated otherwise, the inside diameter shall be considered the finished diameter after lining.

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B. Pipe Wall Thickness. The pipe wall thickness shall be in accordance with ANSI/AWWA M11 with zero minus tolerances. Pipe wall thickness shall be constant for the entire length of pipe section. In restrained lengths, the steel cylinder area shall not be progressively reduced from the point of maximum thrust to the end of the restrained length. The cement mortar lining shall not be used in the pipe wall stiffness calculations.

C. Design (Working) Pressure. Unless otherwise indicated, the working (maximum steady state) and field hydrostatic test pressures shall be as indicated on the Drawings. The transient pressure (maximum total unsteady state) shall be 1.5 times the working pressure. Design in accordance with ANSI/AWWA C200 except that the design stress (using a safety factor of 2.0 to yield strength) shall not be greater than 21,000 psi at design working pressure nor shall the design stress (using a safety factor of 1.5 to yield strength) be greater than 75 percent of 42,000 psi or 31,500 psi for 42,000 psi steel pipe at design transient pressure. In restrained lengths, design hoop stresses shall not exceed 21,000 psi.

D. External Loads. External loads are defined as all live and dead loads applied to the outside of the pipe after the installation. External loads on the pipeline shall be calculated as per AWWA M11. The following parameters are to be used for the final design of the pipeline:

1. Weight of fill above the pipeline = 130 pcf.

2. In all locations except railroad crossings, the live load shall be the maximum effect of an AASHTO HS-20 load acting on the pipe.

3. The pipe shall be designed for the greater of the following load conditions:

a. DL+ HS-20 Live Load

b. DL+ Future 8 feet of additional soil load

c. DL+ Maintenance load from a Backhoe

E. Modulus of Soil Reaction (E’). For compacted granular backfill material in pipe zone use an E’ of 1500 psi. For flowable backfill material in the pipe zone, use 3,000 psi.

F. Bedding Constant. The bedding constant, K shall be 0.10.

G. Pipe Deflection. The requirements of Section 31 23 33 Trenching and Backfilling govern for the excavation and backfilling of trenches for laying steel pipe, fittings, and specials. Conformance with pipe deflection requirements shall be as set forth below.

1. Average allowable pipe deflection is limited to 3% for polyurethane and tape coated steel pipe. In no case shall a single measurement in any direction exceed 1.5 times the average allowable deflection. These measurements include the allowable tolerance for lining thickness.

2. Deflection measurements shall be made by the Contractor in the presence of the Owner’s representative. Method for taking measurements shall be agreed to by the Owner and Contractor in writing prior to installing the first joint of pipe.

3. Average deflection shall be determined by averaging the pipe’s measured vertical deflection as indicated below. Locations where measurements are taken shall be clearly marked on the interior of the pipe.

a. For pipe joints 36 feet in length or less, measurements shall be taken at two locations, 1/4-distance from each pipe end.

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b. For pipe joints longer than 36 feet, measurements shall be taken at three locations including 1/4-distance from each pipe end and at the pipe midpoint.

4. If the average measured deflection at any joint or any single measurement fails to meet specifications, the entire joint shall be reworked in accordance with the manufacturer’s recommendations and as directed by the Owner’s Representative at no additional cost to the Owner. This may include uncovering the pipe and re-compaction of the pipe bedding, and repair of coating.

5. Installed pipe joints will also be examined for flat spots and internal lining stress cracks by the Owner’s representative. A flat spot is anything flat enough to cause lining damage. Lining damage shall be repaired in accordance with the manufacturer’s recommendations and as directed by the Owner at no additional cost to the Owner. Repair of flat spots may include uncovering the pipe and re-compaction of the pipe bedding, and repair of the coating.

6. Where pipe has been reworked to comply with the deflection requirements, Contractor shall re-measure for deflection no earlier than seven days after the repaired pipe is backfilled. Owner’s representative will re-inspect for flat spots at this time.

7. No pipe installation shall be accepted until the entire installation is in compliance with the above deflection requirements.

8. All costs associated with measuring for pipe deflection and any repairs or rework associated with meeting these requirements shall be borne by the Contractor.

H. Internal Vacuum. The pipe and joints shall be designed to withstand full internal vacuum (-14.7psia).

I. Closures and Correction Pieces. Closures and correction pieces shall be provided as required so that closures may be made due to different headings in the pipe laying operation and so that correction may be made to adjust the pipe laying to conform to pipe stationing indicated. The locations of correction pieces and closure assemblies shall be shown on the line layout drawings and shall be subject to the Owner’s Representative’s review. Any change in location or number of said items shall require prior acceptance by the Owner’s Representative.

J. Joint Design Criteria

1. Deflection at Joints. The design horizontal and vertical deflection of the pipe shall not exceed 100 percent of the Manufacturer’s recommendation, or the amount that results in more than a 1/8-inch gap at the weld location, whichever is less.

2. Restrained Joint Design. The joints furnished shall have the same or higher pressure rating as the adjoining pipe. The clearance between faying surfaces shall be less than 1/8 inch at any point around the periphery. The Manufacturer shall determine joint depth requirement based on anticipated temperature change. The joint shall have a rust inhibitive primer. The pipe shall be homed to mid-way of the joint to allow either expansion or contraction to occur. Where indicated on the Drawings, for the inside and outside of the joint, the joint shall have a full circumference double pass minimum field-weld. Designs shall include stresses created by the greater of:

a. Temperature differential of 30 degrees F plus Poisson's effect in combination with hoop stress, or;

b. Thrust due to bulkheads, bends, reducers and line valves resulting from transient pressure times area in combination with hoop stress.

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3. Field welding of joint rings shall not be allowed for thrust restraint. Any fittings used for vertical bends shall be restrained.

4. Temperature Control Joint Design. Where restrained joints are required, a special longer butt strap joint (temperature control joint) shall be provided at a maximum spacing of 250 feet to account for movement of the installed pipe due to temperature changes. The Manufacturer shall determine the length required for the longer butt strap as defined by the Contractor’s pipe laying procedures and the location of the special joint.

1.07 DELIVERY, HANDLING AND STORAGE

1. Coated pipe shall not be shipped or installed until coating has developed full adhesion and cure.

2. All pipe, fittings and specials shall be carefully handled as recommended by the Manufacturer. During coating application, storage, loading, transportation, unloading, laying and installation, every precaution shall be taken to protect and prevent damage to pipe, lining, and coating including impact shocks, and free fall. Pipe shall be handled at all times with a minimum of two wide non-abrasive slings, belts or other equipment designed to prevent damage to the coating or lining. The equipment shall be kept in such repair that its continued use is not injurious to the coating or lining. Forklift equipment shall have all bearing surfaces padded with suitable padding material. Lift pipe with web slings a minimum of 12-inch wide and of a type that will not damage the coating. Metal chains, cable, tongs, forklifts or other equipment likely to damage the coating will not be permitted. Dragging or skidding of pipe on grade or in the trench will not be permitted. The spacing of pipe supports required to handle the pipe shall be adequate to prevent cracking or damage to the lining or coating. All pipe handling equipment shall be acceptable to the Owner.

3. Provide transportation vehicles with padded bolsters between each layer of pipe and heavy padding under load ties. Bolsters shall be curved to fit the outside of the pipe and 12 inches wide, minimum. All pipe contact locations shall be heavily padded with carpet and strips of the outer tape wrap material (adhesive side against the carpet) during shipment to the project site and from the storage yard to the point of installation.

4. Pipe shall not be stored on rocks, gravel, or other hard materials that might damage the coating. Provide padded 12-inch wide skids and chucks, sand bags, select loamy or sand berms, suspended from cutback ends, or suitable means so that the coating shall not be damaged and in a manner which shall protect the pipe against damage whenever stored at the Site or elsewhere. Pipe shall not be laid on asphalt without suitable padding at all contact points.

5. Stockpiled pipe shall be secured to prevent accidental rolling and to avoid contact with mud, water, or other deleterious materials. The pipe and specials shall not be rolled, and shall be secured to prevent accidental rolling. It shall be the responsibility of the Contractor and the pipe and specials manufacturer to prevent damage of the pipe and specials coating and lining which might be caused by handling, transporting, storage or installation of the completed pipe; including at low temperatures or exposure to UV radiation. Any pipe and specials damaged during handling, transporting, storage or installation shall be repaired or replaced. Repairs must meet the approval of the Manufacturer, Owner’s Representative, and Owner.

6. Pipe shall be inspected by the Contractor at the project site for damage. Any damage to the pipe, lining, or coating shall be repaired as directed if, in the opinion of the Owner or

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Owner’s Representative, a satisfactory repair can be made; otherwise, the damaged section shall be replaced at the sole expense to the Contractor.

7. No metal tools or heavy objects shall be permitted to come into contact unnecessarily with the finished coating. Workmen shall not be permitted to walk on the coating except when absolutely necessary and approved by the Owner’s Representative. When permitted, shoes with rubber or composition soles and heels or other suitable footwear that will not damage coating shall be used.

8. Pipe shall be hauled direct from pipe plant to the Site and strung along pipeline route, thus avoiding re-handling of pipe and the possibility of damage thereto. Where fully loaded truck and trailer cannot operate along the pipeline route, pipe may be unloaded at access points along the route and brought to the trench side by approved methods; however, the Contractor shall be responsible to ensure that pipe is undamaged at the time of laying. If the pipe cannot be hauled directly from the pipe plant to the laying site, a maximum of two (2) handlings is allowed. Shipment by rail will be unacceptable unless it can be demonstrated that it will not damage the pipe. No more than two (2) repairs on either lining or coating per joint will be allowed for delivery by rail.

PART 2 PRODUCTS

2.01 GENERAL

A. Markings. The Manufacturer shall legibly mark (stencil) all pipes and specials in accordance with the laying schedule and marking diagram. Each pipe and special shall be numbered in sequence and said number shall appear on the laying schedule and marking diagram in its proper location for installation. All pipe sections and specials shall be marked at each end with top field centerline. The word “top” shall be stenciled on the outside top spigot of each pipe section and special. In addition, pipes and specials shall be stenciled with the outside diameter, wall thickness and pressure class. Identical markings shall be provided on the interior of the pipe and special and shall be a minimum of one foot away from test plug or pipe joint. Any markings that are obscured before, during or after pipe and special installation shall be reestablished at the nearest appropriate location on the pipe and special. All pipe and special markings shall be stenciled. No piping shall be shipped to the project without proper markings.

B. Laying Lengths. Maximum joint length shall not exceed 50 feet (buried installation). Maximum joint length for pipe in casing shall not exceed 25 feet.

C. Repair of Defects. Patching inserts, overlays or pounding out of dents will not be permitted. Repair of notches or laminations on ends shall not be permitted. Damaged ends shall be removed as a cylinder, and the end properly prepared. Distorted or flattened lengths shall be rejected. A buckled section shall be replaced as a cylinder.

2.02 MATERIALS

A. Steel for Cylinder and Specials. Provide steel coils for spiral welded steel pipe or steel plate for straight seam welded steel pipe per ANSI/AWWA C200 and as follows. Pipe sections shall be fabricated by either of the two following methods:

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Pipe sections may be spirally welded or fabricated from cylindrical courses joined circumferentially by complete penetration butt joint welds with no more than three longitudinal seams per course. Longitudinal seams shall be staggered by at least 15 degrees of pipe circumference across circumferential joints.

1. Minimum yield strength of 42,000 psi.

2. Minimum elongation in 2-inch gauge length of 22 percent.

3. Weld-Ability. Maximum carbon equivalent of 0.45, as measured using AWS D1.1, Annex XI, Guideline on Alternative Methods for Determining Preheat formula:

CE=C+((Mn+Si)/6))+(Cr+Mo+V)/5+(Ni+Cu)/15.

4. Pressure Vessel Quality as follows:

a. Coils. Coils shall be of the continuous cast process, fully-killed, fine-grained practice conforming to physical, manufacturing and testing requirements of ASTM A1018.

b. Plate. Plate shall be fully-killed, conforming to ASTM A20, fine-grained practice conforming to physical, manufacturing and testing requirements of ASTM A516, Grade 70. Steel plate chemistry shall conform to ASTM A516, Grade 70. Steel plates that are 3/4 inch thick or greater shall be normalized.

B. Cement Mortar. Cement for mortar shall conform to the requirements of ANSI/AWWA C205; provided, that cement for mortar lining shall be Type I or II per ASTM C150. Cement shall not originate from kilns which burn metal-rich hazardous waste fuel, nor shall a fly ash, bottom ash or pozzolan be used as a cement replacement. Sand shall be silica base and shall not leach in water. Sand shall be in accordance with ANSI/AWWA C205. Cement mortar linings shall be dense and smooth without bumps, blisters, ridges, or spalling, to the satisfaction of the Owner. All rough spots shall be smoothed over with a rubbing stone, or other method, to the satisfaction of the Owner. Epoxy bonding agent shall be in accordance with ASTM C881, Type II, moisture insensitive and suitable for service conditions. Latex admixture shall be Euclid “Euco Flex-Con” or Sika “SikaLatex”. Admixture shall contain no calcium chloride. All cement and cement components shall be ANSI/NSF 61 approved. The minimum lining thickness shall be in accordance with ANSI/AWWA C205. The pipe shall have smooth dense interior surfaces and shall be free from fractures, excessive interior surface crazing, roughness and mortar spatter. Cracks shall be subject to repair within the guidelines of ANSI/AWWA C205. Cement mortar for patching shall be the same materials as the mortar for machine lining, except that a finer grading of sand and mortar richer in cement shall be used when field inspection indicates that such mix will improve the finished lining of the pipe. The nominal inside diameter after lining shall not be less than the diameter shown on the Drawings, allowing for tolerances according to ANSI/AWWA C200 and C205.

C. Liquid Applied Epoxy Coating:

1. Provide liquid epoxy primer and lining in all cement mortar lined metallic pipe at insulating joints for a minimum of two feet on each side of the insulated joint.

2. Epoxy coatings shall be NSF approved coatings suitable for potable water contact in accordance with ANSI/NSF Standards 60 and 61.

3. Epoxy shall be applied over the cement mortar lining for the pipeline lining material.

4. Prepare the cement mortar lining by abrasive blasting to remove all laitance and provide a surface profile.

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5. Cement mortar shall be allowed to cure for a minimum of 15 days prior to surface preparation and coating application or 7 days with steam curing.

6. Mortar lining shall be dry when epoxy lining is applied.

D. Polyurethane Coating: The coating system for straight line pipe and fittings shall be in accordance with ANSI/AWWA C222, field joints shall be in accordance with ANSI/AWWA C216 as modified by Section 09 96 00 High-Performance Coatings.

E. Field Welded Joints. Field welded joints shall be in accordance with ANSI/AWWA C206 - Field Welding of Steel Water Pipe. Single internal or external lap-welded slip joints shall be used for all pipe. Field welded lap joints shall have the bell expanded by pressing (not rolling) to obtain the required shape and welding tolerances. Welded joints shall be provided as needed and where indicated on the Drawings. Butt-strap joints shall be used where required for closures.

1. Lap-welded slip joints shall be used for all pipe. Lap-welded slip joints shall be welded on the inside or outside with full fillet weld. Ends of pipe, fittings, and specials for field welded joints shall be prepared with one end expanded in order to receive a plain end making a bell and plain end type of joint. Clearance between the surfaces of lap joints shall not exceed 1/8 inch at any point around the periphery

2. Where necessary to make closure to pipe previously laid, closure joints shall be installed using butt strap joints in accordance with ANSI/AWWA C206 and applicable provisions of this Section of the Contract Documents. Butt straps shall be welded on the interior and exterior of the pipe.

F. Flanged Joints. Flanges shall be in accordance with ANSI/AWWA C207, slip-on, Class E for operating pressures over 150 psi to 275 psi or shall be class F for pressures to 300 psi. Flange dimensions and drilling, blind flanges and gaskets shall be in accordance with ANSI/AWWA C207. Gaskets shall be furnished by the Manufacturer. Flanges shall match all valves and fittings, and it shall be the responsibility of the Manufacturer to verify flanges match.

G. Flange Bolting. Flange bolting material shall be TYPE 316 stainless steel conforming to ASTM A193, Grade B8M, Class 1 for class B and D Flanges with ASTM 194, Grade 8M nuts. For Class E and F flanges the bolts shall be ASTM A194 grade 2H nuts with bolt and nuts to be zinc plated in accordance with ASTM B633 where buried, in accordance with ANSI/AWWA C207, and of the bolt and nut type or bolt-stud and two nuts permitted for 1 inch and larger. Bolt and bolt-stud lengths shall be such that ends project 1/4 to 1/2 inch beyond surface of nuts. Ends shall be chamfered or rounded. Threading shall be in accordance with ANSI/ASME B1.1, coarse thread series, Class 2A fit. Bolt-studs may be threaded full length. Bolt head dimensions shall be in accordance with ANSI/ASME B18.2.1, regular pattern for square and heavy pattern for hexagonal. Nuts shall be hexagonal and nut dimensions shall be in accordance with ANSI/ASME B18.2.2, heavy, semi-finished pattern. Nut threading shall be in accordance with ANSI/ASME B1.1, coarse thread series, Class 2B fit. Bolts and nuts shall be provided by the Contractor.

H. Dismantling Joints. Dismantling joints shall be Romac “DJ400”, Dresser “Style 131 Dismantling Joint”, or Viking Johnson. For use in potable water systems, coating to be in accordance with ANSI/NSF 61.

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I. Flanged Coupling Adapters. Flanged coupling adapters shall be Dresser “Style 128” or Smith-Blair “913” with anchor studs of sufficient size and number to withstand test pressure.

J. Pipe Appurtenances and Specials. Unless otherwise indicated, pipe appurtenances and specials shall be in accordance with the requirements of AWWA M11 and AWWA C208.

K. Small Branch Connections. Small branch connection pipe nipples (twelve (12) inches or less) shall be seamless black steel pipe in accordance with ASTM A53, standard weight (Schedule 40). Fittings required for interior pipe welding shall be threaded outlets or welded outlets. Threaded outlets shall be Bonney “Thredolets”, Porter “W-S Teelets”, or Flowserve/Vogt “Weld Couplets”. Welded outlets shall be Bonney “Weldolets”, Porter “W-S Teelets”, or Flowserve/Vogt “Weld Couplets”.

L. Pipe End Covers. For all pipe and specials with shop applied cement mortar linings, provide a 12 mil polyethylene or other suitable cover on the ends of the pipe and specials. The covers shall be so designed to prevent drying out of the interior of the pipe. Covers shall be substantial enough to remain intact during shipping and storage until the pipe is installed.

M. Stulling. Adequate stulling shall be designed and provided by the Manufacturer on all specials, fittings and straight pipe so as to avoid damage to the pipe and fittings during handling, storage, hauling and installation. The stulling shall be tight fitting to prevent pipe deflection. The following requirements shall apply:

1. The stulling shall be placed as soon as practicable after the mortar lining has been applied and shall remain in place while the pipe is loaded, transported, unloaded, installed, and backfilled at the Site.

2. The stulling materials, size and spacing shall be the responsibility of the Contractor and pipe manufacturer, with the following exceptions:

a. One stull shall be placed vertical when pipe is oriented with top up.

b. For pipe joints up to 36 feet long, stulls shall be placed at a maximum spacing 12 feet apart. For pipe joints 36 to 50 feet long, a minimum of 4 stulls shall be placed at a maximum spacing of 15 feet apart.

c. Stulling is for handling and transportation, as well as preventing egging before backfilling. Proper placement of embedment material controls deflection. Stulls are not structural members as they are eventually removed.

d. Stulling on shop-lined pipe shall consist of stulls and wood wedges. Stulling shall be installed in a manner that shall not harm the lining.

N. Pipeline Marking Tape. Pipeline marking tape shall be minimum 4 mil thick polyethylene which is impervious to alkalis, acids, and chemicals and solvents which are likely in the soil. Tape shall be 12 inches wide. Imprinted lettering shall be one-inch tall, permanent black on a blue background, and shall read “Water Line Buried Below.” Tape shall be as manufactured by Reef Industries (Terra Tape), Allen (Markline) or equal.

O. Joint Grout. The grout for joint lining shall be cement grout in accordance with Section 03 60 00 Grouting, except that composition shall be one part cement to two parts sand and sufficient water for dry-pack consistency. Sand shall conform to ASTM C-33 and shall be clean, fine, sharp, silica sand. Water shall be treated and suitable for drinking water.

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P. Epoxy Coating. Epoxy shall conform to the requirements of ANSI/AWWA C210.

Q. Shop Prime Coat. Shop prime coat shall be rust-inhibitive primer as recommended by the Manufacturer.

R. Joint Lubricant. Lubricant shall be a non-toxic vegetable-based compound listed as in compliance with ANSI/NSF 61.

S. Watertight Plugs. Watertight plugs shall be provided to seal the pipe ends when pipe laying has stopped.

T. Bituminous Filler for Wall Fittings. Bituminous filler for wall fittings shall be asbestos-free plastic asphalt roof cement in accordance with ASTM D4586, Type II.

U. Watertight Pipe Sleeves. Watertight pipe sleeves shall be Thunderline Corporation “Link-Seal”, insulating type with modular rubber sealing elements, nonmetallic pressure plates, and galvanized bolts and nuts.

V. Anchor Bolts. Anchor bolts shall be in accordance with ASTM A307.

PART 3 EXECUTION

3.01 GENERAL

A. Shop Cement Mortar Lining. Unless indicated otherwise, interior surfaces of all steel pipe, fittings, and specials shall be cleaned and lined in the shop with cement mortar lining applied centrifugally in conformity with ANSI/AWWA C205. During the lining operation and thereafter, the pipe shall be maintained in a round condition by suitable bracing or stulling as specified. The lining machines shall be of a type that has been used successfully for similar Work and shall be accepted by the Owner. Every precaution shall be taken to prevent damage to the lining. The pipe shall be left bare where field joints occur as indicated. Ends of the linings shall be left square and uniform. Feathered or uneven edges shall not be permitted.

1. Centrifugally line straight sections of pipe. Lining of special pieces or fittings shall be by mechanical, pneumatic, or hand placement. Provide cement mortar lining of uniform thickness. Finish to a smooth dense surface.

2. Steel plate specials larger than 16 inches in diameter shall have lining reinforced with 2-inch by 4-inch No. 13 gage welded steel wire mesh.

3. Brace and support pipe during lining application to minimize pipe distortion or vibration. Bracing and supports shall not damage the pipe, coating, or lining.

4. Tightly close ends of pipe and fittings with plastic sheet caps. Plastic end caps shall be of sufficient thickness and strength to resist shipping, handling, and storage stresses.

5. Damage to the cement mortar lining, including disbondment, cracking, or blistering, caused by improper curing, shipping, handling, or installation shall be repaired in accordance with AWWA specifications and to the satisfaction of the Owner’s Representative.

6. Other requirements of mortar lining materials and processes: As specified in AWWA C205.

B. Liquid Epoxy Lining:

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1. Clean and coat the interior of cement mortar lined pipe at insulating joints or where specified with two coats of epoxy coating.

2. Epoxy coating applied at insulating joints shall be applied to two feet on each side of the insulating joint. If only one side of the joint can be coated the coating shall be applied for a minimum of four feet.

3. Mortar lining shall be allowed to cure 15 days or steam cured not less than 7 days prior to surface preparation of the mortar and epoxy coating application. Hand applied mortar lining shall be allowed to cure a minimum of 15 days or as required to meet the coating manufacturer’s requirements for application on cement or concrete, whichever is greater.

4. Prepared mortar lining by abrasive blasting to remove all laitance and create a suitable anchor profile.

5. Epoxy coating shall be applied in two coats minimum, at a total coating thickness of 16 mils dry film thickness. Coating applied over cement mortar lining shall be applied in a manner that will minimize gassing and pinholes in the completed lining.

6. Mortar lining shall be dry during epoxy lining application

C. Lining and Coating Holdback. Shop applied interior linings shall be held back from the ends of the pipe as acceptable to the Owner. Shop applied exterior coatings shall be held back from the ends of the pipe as specified in Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main as otherwise acceptable to the Owner. The surface preparation and primer shall be compatible with the intended finish coating as specified in Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main and Section 09 96 00 High Performance Coatings as applicable.

D. Shop Welded Surfaces. All weld seams on pipe surfaces that will have a flexible coating or polyurethane coating in accordance with Section 09 96 00 High Performance Coatings shall be ground such that the maximum weld bead height shall not exceed 1/32-inch. All ground weld seams shall be smooth and free of burrs. Grinding into or gouging of adjacent pipe wall shall not be permitted.

E. Pipe End Covers. The ends of all pipe and specials shall be securely covered or otherwise sealed during transport to the Site. The ends of the pipe shall remain sealed until pipe installation.

F. Long-term Exposure: Pipe that is exposed to UV rays for a period of over 180 days after application shall either be provided with a UV resistant topcoat, covered to prevent UV degradation, or be certified in writing by the coating manufacturer that UV exposure will not affect the thickness of the coating if exposed up to 1 year of sunlight. Exposure greater than 1 year shall not impact the dry film thickness of the coating. Areas of coating that display UV degradation and more than 2 mils per year of coating loss in accordance with SSPC PA2-2012 shall be removed and repaired at sole cost of the Contractor. For exposures greater than 1 year with UV degradation, the required application of UV resistant topcoat will depend on the project location, laying schedule, anticipated length of exposure, and type of outer wrap. The manufacturer shall be consulted for 3,000 psi water blasting minimum and a compatible UV resistant topocoat or pipe shall be stored under a protective cover. Protective covering can be colored plastic, plastic sheeting, canvas or other UV blocking material. Clear plastic sheets are not acceptable.

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G. End Caps: Pipe ends of mortar lined pipe and fittings shall be tightly closed with a plastic wrap to aid in curing and to minimize drying out of and contamination of the lining. Plastic end cap shall consist of a minimum of one 10-mil sheet of polyethylene or other suitable material. End caps shall be substantial enough to resist shipment, handling, and storage loads and firmly attached in place. The plastic end cap shall remain intact and in place until pipe installation. Damaged or missing plastic end caps shall be repaired or replaced.

H. Bracing

1. The Manufacturer shall furnish and install adequate bracing or stulling to keep the pipe from becoming deformed or damage from occurring to the coating or linings. Stull bracing shall be installed as soon as possible after application of lining. Stulls shall remain in place during handling, storage, transportation, and installation of pipe and fittings until after the pipe zone material is compacted.

2. The stulls shall be installed with pads and wedges in such a manner that the pipe lining will not be damaged and the stulls will not be dislodged during shipping and handling of the pipe. If stulls are welded, they shall be installed and removed in such a manner to prevent damage to the steel cylinder, lining, or coatings. All damage shall be repaired to the satisfaction of the Owner’s Representative.

I. Holiday Testing. Just prior to installation, pipe, fittings and specials shall be tested by the Contractor and witnessed by the Owner with specified electrical flaw detectors. Holidays shall be repaired by the Contractor at no expense to the Owner, as specified in Section 09 96 00 High Performance Coatings and Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main.

J. Pipe and Specials Protection.

1. At all times, all pipe at the fabrication plant or stored at the Site, which has been cement-mortar lined in the shop shall be protected with suitable pipe end covers, as specified, to maintain a moist atmosphere and to prevent unauthorized access by persons, animals, water, or any undesirable substance. The Contractor shall introduce water into the pipe to keep the cement-mortar moist where moisture has been lost due to damaged covers.

2. At the end of the each work day, the ends of open pipe and specials in the trench shall be sealed with a watertight plug. All water in the trench shall be removed prior to removing the plug. If the pipe is not properly sealed resulting in exposure to water, mud, debris, etc., the Contractor, at their expense shall clean the exposed pipe section to the satisfaction of the Owner prior to proceeding with pipelaying.

3. At all times, means shall be provided to prevent the pipe from floating due to water in the trench from any source. Pipe which has floated shall be removed, cleaned, the trench repaired and restored, and the pipe re-installed in accordance with these specifications to the required line and grade at no additional cost to the Owner. Pipe damaged for any reason shall be repaired or replaced in accordance with these specifications at no expense to the Owner.

4. At locations where the Contractor proposes to cross the installed pipeline with heavy equipment, precautions as accepted by the Owner shall be taken to protect the pipe from damage. Acceptable precautions include, but are not limited to, backfilling the pipe trench as necessary to protect the pipe or concrete encasing the pipe and placing steel

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plating over the pipe. Any damage to the pipe caused by the Contractor’s operation or his equipment shall be repaired to the Owner’s satisfaction at no cost to the Owner.

3.02 PIPE CLEANUP

A. As pipe laying progresses, the Contractor shall keep the pipe interior free of all debris. The Contractor shall completely clean the interior of the pipe of all sand, dirt, mortar splatter and any other debris following completion of pipe laying, pointing of joints and any necessary interior repairs prior to testing the completed pipeline. Noncompliance with this item will result in non-payment for affected portions of pipeline. All pipe shall be broom swept.

3.03 INSTALLATION OF PIPE

A. General. No pipe and specials shall be installed where the lining or coating/interior or exterior surfaces show cracks or damage that may jeopardize the integrity of the pipe as determined by the Owner. Such damaged lining and coating/interior and exterior surfaces, shall be repaired or a new undamaged pipe shall be provided. All pipe damaged prior to Substantial Completion shall be repaired or replaced.

B. Inspection. The Contractor shall inspect each pipe and fitting to insure that there are no damaged portions of the pipe. The Contractor shall remove or smooth out any burrs, gouges, weld splatter or other small defects prior to laying the pipe.

C. Cleaning. Before placement of pipe in the trench, each pipe or fitting shall be thoroughly cleaned of any foreign substance which may have collected thereon and shall be kept clean at all times thereafter. For this purpose, the openings of all pipes and fittings in the trench shall be closed during any interruption to the Work, using watertight plugs as specified.

D. Placement. Pipe shall be laid directly on the imported bedding material. No blocking shall be permitted, and the bedding shall be such that it forms a continuous, solid bearing for the full length of the pipe. Allow gaps in the bedding to allow installation of the external joint protection. Excavations shall be made as needed to facilitate removal of handling devices after the pipe is laid. Initial backfill shall be “mechanically consolidated” to a point 6 inches above installed pipeline. In addition, the compaction and other requirements shall be as specified in Section 31 23 33 Trenching and Backfilling.

E. Installation Tolerances and Change in Alignment. Each section of pipe shall be laid in the order and position shown on the line layout and marking diagrams and in accordance with the following:

1. Each section of pipe shall be laid to line and grade, within plus or minus 0.28 foot horizontal deviation and plus or minus 0.14 foot vertical deviation. Pipe shall be in the center of the trench to allow proper compaction.

2. The position of the pipe shall be verified by instrument control at every joint.

3. In addition to the horizontal and vertical tolerances above, lay the pipe so that no high or low points other than those on the line layout and marking diagram are introduced. To prevent high points or low points along the pipeline, the general slope of the pipeline shall not be changed between vertical angle points.

4. When pipe is to be connected to existing pipe, the terminus of the existing pipe shall be field located prior to fabricating new pipe.

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5. The Contractor shall submit any required alignment adjustments to the Owner for acceptance. The Contractor shall make any required field alignment adjustments to allow proper fitup of pipe in conformance with tolerances specified.

6. Where necessary to raise or lower the pipe due to unforeseen obstructions or other causes, the Owner may change the alignment and/or the grades. Such change shall be made by the deflection of joints, by the use of bevel adapters or by the use of additional fittings. However, in no case shall the deflection in the joint exceed the specified maximum allowable deflection No joint shall be misfit any amount which will be detrimental to the strength and water tightness of the finished joint. In all cases the joint opening, before finishing with the protective cement-mortar or epoxy lining inside the pipe, shall be the controlling factor.

F. Laying on Grade. Except for short runs which may be permitted by the Owner, pipes shall be laid uphill on grades exceeding 10 percent. Pipe which is laid on a downhill grade shall be blocked and held in place until sufficient support is furnished by the following pipe to prevent movement. Bends shall be properly installed as indicated.

G. Cold Weather Protection. No pipe shall be installed upon a foundation into which frost has penetrated or at any time that there is a danger of the formation of ice or penetration of frost at the bottom of the excavation. No pipe shall be laid unless it can be established that the trench will be backfilled before the formation of ice and frost occurs.

H. Marking Tape. Continuously install marking tape along the pipe at a depth two feet above the top of pipe, unless otherwise shown on the Drawings, in accordance with the recommendations and instructions of the marking tape manufacturer.

3.04 INSTALLATION OF WELDED JOINTS

A. Fitting Up. When fitting up the ends of pipe to be welded or fitting butt strap pieces, minor jacking or clamping will be allowed. Cold working the metal with sledges or localized application of heat and working the metal with sledges will not be allowed. If field displacement of joints, where butt strap joints are indicated, does not allow proper fit up with the tolerances indicated, special closure butt straps or mitered pieces shall be shop fabricated and installed, subject to Owner’s Representative’s acceptance.

B. Backfilling. After the pipe and pipe joint are properly positioned in the trench, the length of pipe between joints shall be backfilled in lifts to at least six inches above the top of the pipe. Care shall be exercised during the initial backfilling to prevent movement of the pipe and to prevent any backfill material from being deposited on the joint.

C. Adequate Space. Adequate space shall be provided for exterior joint welding and inspection of the joints. Exterior joint welding shall be completed before application of field applied joint coating for pipe and prior to backfilling.

D. Protection of Coating. A heat resistant shield shall be draped over at least 24 inches of coating beyond the holdback on both sides of the weld during welding to avoid damage to the coating by hot weld splatter. Welding grounds shall not be attached to the coated part of the pipe.

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E. Welding. Prior to the beginning of the welding procedure, clean primer off of the steel prior to welding any tack welds or joint stops used to position the pipe during laying shall be removed. The weld shall then be made in accordance with ANSI/AWWA C206. Where more than one pass is required, each pass shall be thoroughly cleaned so all dirt, slag and flux shall be removed before the succeeding bead is applied.

1. All welding shall be wire-fed or with stick electrodes, and two or more weld passes as required to meet the approved AWS qualified welding procedures and maximum coating temperature limitations.

2. Welding speed, amperage, and voltage shall be as required to maintain a maximum heat input of 23,000 joules or a maximum surface temperature at the coating/steel interface of 800 degrees F, whichever is least.

3. Maximum weld temperature and duration shall not result in full carbonization of the joint coating adhesive. Full carbonization is defined as the loss of volatile organic compounds that result in complete loss of tackiness, adhesion to the steel, and corrosion protection properties.

4. Finished joint coating shall not have any visual creases or folds in the joint coating backing material that extends through both the inner protective layer and outer joint sleeve.

5. One test joint shall be provided for each welder. After welding, the test joint shall be excavated to verify no unacceptable damage to the exterior heat shrink sleeve. Discoloration, minor orange peel, and crevices less than 50% of the heat shrink sleeve backing thickness will be acceptable. Deeper crevices, cracks, and holes are not acceptable.

6. After the pipe has been joined and properly aligned and prior to the start of the welding procedure, the spigot and bell shall be made essentially concentric by tacking to obtain a 1/8” maximum clearance tolerance around the periphery of the joint. In no case shall the clearance tolerance be permitted to accumulate. Before welding, thoroughly clean pipe ends to bare metal. All welding shall be hand welding to avoid damage to the heat shrink sleeve. Welding shall be performed so as not to damage lining or coating. Cover the lining and/or coating as necessary to protect from welding splatter.

F. For pipe 48” and larger, if the Contractor chooses to use Weld after Backfill (WAB), special techniques shall be used to limit damage to the exterior heat shrink sleeve. ‘Weld after Backfill’ is not permitted on wall thicknesses of ≤0.3750 inch or less. Procedures for ‘Weld after Backfill’ on wall thicknesses >0.375 inch must be approved by the Owner’s Representative based on field testing demonstrating the welding procedures can comply with the requirements of this specification.

1. Weld After Backfill Joint Requirements:

a. Post-welded or ‘Weld after Backfill’ joints are defined as welded pipe joints that have been coated and backfilled prior to completing interior welds.

2. Post welded joints shall be coated and protected as follows:

a. Joint coating shall be as indicated in Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main. Tape wrapped joints will not be acceptable.

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b. Provide a 6-inch wide Canusa Aqua Shield AQW-WAB (or Rachem Equivalent) protective layer centered over the interior weld location as recommended by the joint sleeve manufacturer. Heat resistant tape will not be acceptable.

c. Hold back primer shall be suitable for post weld conditions as specified in Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main and shall not exhibit any binder breakdown in the heat affected zone that causes loss of joint coating adhesion to the holdback primer.

d. Filler mastic materials shall be high temperature materials with 500 degree F melting point.

e. Joints shall be buried prior to welding, with not less than 6 inch cover of soil or flowable fill material above the pipe, and minimum side and bottom of trench distances as shown in the project trench details.

3. Welding of the joints shall be in conformance with this section and as indicated herein:

a. All welding shall be wire-fed or with stick electrodes, and two or more weld passes as required to meet the approved AWS qualified welding procedures and maximum coating temperature limitations. Not more than 1/8” shall be deposited per weld pass. ‘Weld after Backfill’ procedures must be approved by the Owner’s Representative based on field testing demonstrating the welding procedures can comply with the requirements of this Section.

b. Welding speed, amperage, and voltage shall be as required to maintain a maximum heat input of 23,000 joules or a maximum surface temperature at the coating/steel interface of 800 degree F, whichever is least.

c. Maximum weld temperature and duration shall not result in significant carbonization of the joint coating adhesive. Significant carbonization is defined as the loss of volatile organic compounds that result in substantial loss of tackiness, adhesion to the steel, and corrosion protection properties.

d. Finished joint coating shall not have any visual creases or folds that extend through more than 50% of the joint coating backing material.

4. If Contractor elects to weld after backfill any joints, Contractor shall demonstrate that the joint welding procedures will not significantly damage the coating by using a temporary prototype test joint of the minimum wall thickness used on the project. The test joint shall be backfilled, and each welder proposed for the project shall be tested. Each welder shall provide a complete welded joint including a minimum of two feet of weld over head and below head. The test joint will be excavated after welding and destructively tested. The heat shrink sleeve shall be tested by an adhesion test in accordance with ASTM D1000, and shall meet an adhesion value of 15 lb-inch. Test shall be performed directly over the weld (parallel) and perpendicular to the weld. The sleeve backing shall not rip, tear, or split. The test shall be done a minimum of 24 hours after welding. Additionally, a visual inspection of the sleeve will be made to verify the sleeve is not damaged beyond the limits of this specification. Additionally, excavate the first two joints for evaluation of the joint coating condition. Owner’s Representative will randomly select up to three additional post-welded joints for excavation by Contractor for evaluation of joint coating condition. Joint coating will be destructively evaluated by the Owner’s Representative. Contractor will removed and replace joint heat shrink sleeve upon completion of the evaluation.

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5. In the event that any excavated post welded joint exhibits any heat related damage as defined herein, Contractor shall modify and test a new welding after backfill procedure prior to completing any additional welded joints. Contractor shall demonstrate that the revised joint welding procedure will not significantly damage the coating by repeating the weld after backfill evaluation requirements defined in this Section, including excavation of the three additional randomly selected joints for destructive evaluation.

6. Control of Temperature Stresses. Adequate provisions for reducing temperature stresses

a. Control temperature stresses in accordance with AWWA C206, the reviewed temperature stress control submittal, and these Specifications at the Contractors expense.

b. To control temperature stresses, the unbackfilled special temperature control joint areas of all pipe shall be shaded from the direct rays of the sun by the use of properly supported awnings, umbrellas, tarpaulins, or other suitable materials until the pipe is backfilled at least 1 foot over the top of the pipe. The Temperature Control Joint Area is defined as the entire length of pipe left exposed near a control joint after placing the pipe backfill between it and the other control joints in each direction. Shading materials at the joint area shall not rest directly on the pipe but shall be supported to allow air circulation around the pipe. Shading of the pipe joints need not be performed when the ambient air temperature is below 450 F.

c. At intervals not exceeding 300 feet along welded reaches of the pipeline, at the first regular lap-welded field joint outside concrete encasements and structures, and where shown, the pipe shall be supplied with a special temperature control lap joint and laid with an initial lap in accordance with the Drawings. Where temperature control lap joints occur in a traveled roadway or other inconvenient location, the location of the joint may be adjusted, as acceptable to the Owner’s Representative.

G. Inspection. All field-welded joints shall be 100 percent visually inspected by the Contractor’s certified welding inspector. Visual inspection acceptance criteria shall be in full conformance with ANSI/AWS D1.1, Paragraph 6.1, Visual Inspection Acceptance Criteria table for statically loaded nontubular connections.

H. Testing. Field welded joints shall be tested using the magnetic particle inspection procedure conforming to the requirements of ANSI/ASTM E 709 “Standard Guide for Magnetic Particle Testing” and ASTM E 1444 “Standard Practice for Magnetic Particle Testing”. Butt straps shall have an additional air test. Air test shall be low pressure for a threaded fitting between the welds. A 1/4 NPTF threaded air test tap hole shall be installed for testing. Test pressure shall be 15 psi and be held for 10 minutes.

I. Repair of Welds. Welds that are defective shall be repaired by the Contractor to meet the requirements of the applicable sections of the Contract Documents. Defects in welds or defective welds shall be removed, and that section of the joint shall then be re-welded. Only sufficient removal of defective material that is necessary to correct the defect is required. After the repair is made, the joint shall be checked by repeating the original test procedure. Welds deficient in size shall be repaired by adding weld metal. All defects shall be ground out, re-welded, and retested. Upon retest, the repaired area shall show no leaks or other defects. The test shall be rerun, and repairs made, as many times as required to achieve a successful test at no additional cost to the Owner.

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J. Outlets for Weld Leads: The Contractor may use outlets for access for weld leads. Outlets shall be welded after use. The minimum spacing for outlets for weld leads shall be 500 feet. Outlets through air valves, manways, etc. shall be included in the calculation for 500 feet minimum spacing.

3.05 INSTALLATION OF PIPE APPURTENANCES

A. Protection. Where the joining pipe is polyurethane coated, buried appurtenances shall be coated with heat shrink sleeve.

B. Valves. Valves shall be handled in a manner to prevent any injury or damage to any part of the valve. Joints shall be thoroughly cleaned and prepared prior to installation. The Contractor shall adjust stem packing and operate each valve prior to installation to insure proper operation. Valves (body and seat) shall not be subjected to test pressures greater than valve manufacturer’s recommendation. Valves shall be installed so that the valve stems are plumb and in the location show on Drawings. Buried valves shall be coated and protected in accordance with Section 33 12 16 Water Utility Distribution Valves.

C. Flanged Joints. Before the joint is assembled, the flange faces shall be thoroughly cleaned of all foreign material with a power wire brush. The gasket shall be centered and the connecting flanges drawn up watertight without unnecessarily stressing the flanges. Bolts shall be tightened in a progressive diametrically opposite sequence in accordance with AWWA C-207 and torqued with a suitable, acceptable and calibrated torque wrench set for the torque recommended in accordance with AWWA M11. Clamping torque shall be applied to the nuts only. Non-asbestos ring gaskets shall be applied to the inside faces of blind flanges with adhesive. All buried flanges shall be coated and protected with heat shrink sleeves in accordance with Section 09 96 00 High Performance Coatings.

D. Flexible Coupled Joints. When installing flexible couplings, care shall be taken that the connecting pipe ends, couplings and gaskets are clean and free of all dirt and foreign matter with special attention being given to the contact surfaces of the pipe, gaskets, and couplings. The couplings shall be assembled and installed in conformity with the recommendations and instructions of the coupling manufacturer. All welds shall be ground flush at the location of flexible couplings.

E. Bolted Coupling. Wrenches used in bolting couplings shall be of a type and size recommended by the coupling manufacturer. Coupling bolts shall be tightened so as to secure a uniform annular space between the follower rings and the body of the pipe with all bolts tightened approximately the same amount. Diametrically opposite bolts shall be tightened progressively and evenly. Final tightening shall be done with a suitable, approved, and calibrated torque wrench set for the torque recommended by the coupling manufacturer. Clamping torque shall be applied to the nuts only. Upon completion of the coupled joint, the coupling and bare metal of the pipe shall be cleaned, primed, and protected in accordance with the requirements of Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

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3.06 REMOVAL OF STULLS

A. Removal of Stulls. Pipe stulls shall be left in place until compacted backfill has been fully completed. The Contractor shall monitor pipe deflection by measuring pipe inside diameter before stulls are removed, and 24 hours after backfilling with approved compaction tests. Pipe deflection shall meet requirements in this specification section. After the backfill has been placed, the stulls shall be removed and shall remain the property of the Contractor. Stulls and wedges shall be removed without damage to any linings, coatings or pipe.

1. Out-of-Round Pipe: Pipe which deviates from a true circle by more than 1 percent shall be laid with its larger diameter vertical, or by using struts on continuous head and sill timbers to correct the vertical diameter where acceptable to the Owner’s Representative. Struts shall be left in place until the joints at each end have been completed and embedment and backfill for the section have been placed to the top of the trench. Final inspection, repair, and checking of interior lining shall be performed after the struts have been removed.

2. Pipe Deflection: After completion of backfilling and before acceptance of the Work, all pipes 30 inches and larger in diameter shall be tested for excessive deflection by measuring the actual inside vertical diameter. Deflection measurements will be made by the Contractor and verified by the Owner. Pipe diametric deflection shall not exceed 2.25 percent of the nominal inside diameter measured in the vertical direction at any point in the pipe. Diametric deflection greater than 2.25 percent shall be corrected by the Contractor at no additional cost to the Owner.

3.07 JOINT LINING AND COATING

A. Coatings.

1. Joint Coating of Polyurethane Coated Pipe. The exterior joint recesses shall be thoroughly wiped clean and all water, loose scale, dirt and other foreign material shall be removed from the outside surface of the pipe. The Contractor shall be responsible for his operations so that they do not damage the factory applied coating system. After the completion of joint testing and cleaning, all joints shall be coated with Heat Shrink Sleeves per AWWA C216.

2. Exterior Coating of Exposed Piping. The exterior surfaces of pipe which will be exposed to the atmosphere inside structures or above ground shall be thoroughly cleaned and then given a shop coat of primer compatible with the finish coating required by Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

3. Coating of Fittings and Specials. Fittings and specials shall be coated in accordance with ANSI/AWWA C222 as modified in Section 09 96 00 High Performance Coatings and Section 09 97 15, Coating and Painting for 48-Inch Steel Water Main.

4. After the backfill has been completed to final grade, the interior joint recess shall be filled with grout. The grout shall be tightly packed into the joint recess and troweled flush with the interior surface. Excess shall be removed.

5. At no point shall there be an indentation or projection of the mortar exceeding 1/16-inch.

3.08 REPAIR OF LINING

A. Coating repair shall be as specified in Section 09 96 00 High Performance Coatings and Section 09 97 15 Coating and Painting for 48-Inch Steel Water Main.

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3.09 HYDROSTATIC AND LEAKAGE TESTING

A. Once installed, the pipe shall be hydrostatically and leakage tested as specified in Section 33 11 13.10 Public Water Utility Piping.

3.10 WELDING

A. Conform to AWS D1.1, AWWA C206, approved welding procedures, and referenced welding codes. In case of conflict AWS D1.1 shall govern.

B. Preheat and Interpass temperature requirements for unlisted base metals shall be determined according to AWS D1.1, Annex XI Guideline on Alternative Methods for Determining Preheat.

C. Rejected weld defects shall be repaired or redone, and retested until sound weld metal has been deposited in accordance with appropriate welding codes.

D. Contractor shall field weld joints for joint restraint for connecting existing pipe as shown on the restrained length submittal.

E. Any changes in vertical or horizontal alignment from that provided in the drawings may necessitate a change in restrained joint lengths. Contractor shall contact Owner’s Representative any time a change in alignment is necessary.

3.11 RUBBER GASKET JOINT PIPE

A. Each joint shall be checked by the Contractor, as recommended by the pipe manufacturer, to determine that the pipe joint and the rubber gasket are installed properly.

3.12 EXTERIOR JOINT PROTECTION FOR POLYURETHANE COATED STEEL PIPE

A. General: Buried pipe joints shall be field coated after pipe assembly in accordance with AWWA C216, using Heat Shrink Sleeves. Width of heat shrink sleeve shall be sufficient to overlay the polyurethane coating by a minimum of 3-inches. Overlapping of two or more heat shrink sleeves to achieve the necessary width will not be permitted.

B. Installation

1. Clean pipe surface and adjacent coating of all mud, oil, grease, rust, and other foreign contaminates with a wire brush in accordance with SSPC-SP2, Hand Tool Cleaning, or SSPC-SP3, Power Tool Cleaning. Remove oil or grease contamination by solvent wiping the pipe and adjacent coating in accordance with SSPC-SP1, Solvent cleaning. Clean the full circumference of the pipe and a minimum of 6 inches onto the existing coating.

2. Remove all loose or damaged pipe coating at joint and either repair the coating as specified herein or increase the length of the joint coating, where reasonable and practical.

3. Complete joint bonding of pipe joints before application of joint coating.

4. Joint bonds shall be low profile bonds and all gaps and crevices around the Joint bonds shall be filled with mastic sealant.

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5. Store sleeves in shipping box until use is required. Keep dry and sheltered from exposure to direct sunlight. Store off the ground or concrete floors and maintain at temperature

between 60 F and 100 F as recommended by the sleeve manufacturer.

6. Metal surface shall be free of all dirt, dust, and flash rusting prior to sleeve application.

7. Preheat pipe uniformly to 140 F to 160 F or as recommended by the sleeve manufacturer. Monitor pipe temperature using a surface temperature gauge, infrared thermometer, or color changing crayons. Protect preheated pipe from rain, snow, frost, or moisture with tenting or shields and do not permit the joint to cool.

8. Prime joint with specified primer and fill all cracks, crevices, and gaps with mastic filler in accordance with the manufacturer's recommendations for the full circumference of the pipe.

9. Apply heat shrink sleeve when it is at a minimum temperature or 60 F and while maintaining the pipe temperature above the preheat temperature specified. Apply sleeve in accordance with the manufacturer's instructions and center the sleeve over the joint to provide a minimum of 3-inches overlay onto the existing pipe coating.

10. Apply heat to the sleeve using either propane fire infrared heaters or wrap around heaters. Hold flame a minimum of 6-inches from the sleeve surface. Periodically roll the coating on the pipe surface. Heat from the center of the sleeve to the outer edge until properly seated, and then begin in the opposite direction. Monitor sleeve for color change, where appropriate, or with appropriate temperature gauges.

11. Completed joint sleeve shall be fully bonded to the pipe and existing coating surface, without voids, mastic beading shall be visible along the full circumference of the sleeve, and there shall be no wrinkling or excessive burns on the sleeves. Sleeves which do not meet these requirements shall be removed and the joint recoated as directed by the Owner’s Representative. Minor repairs may be repaired using heat shrink sleeve repair kits.

12. Allow the sleeve to cool before moving, handling, or backfilling. In hot climates, provide shading from direct sunlight. Water quenching will be allowed only when permitted by the sleeve manufacturer.

3.13 REPAIR AND FIELD TOUCHUP OF POLYURETHANE COATING

A. Apply Madison CORROPIPE TX 11 Touchup Polyurethane Coating or equal for repair and field touch-up of polyurethane coating.

B. Repair Procedure - Holidays:

1. Remove all traces of oil, grease, dust, dirt, etc.

2. Roughen area to be patched by sanding with rough grade sandpaper (40 grit).

3. Apply a 30 mil coat of repair material described above. Work repair material into scratched surface by brushing or rolling in accordance with manufacturer's recommendations.

4. Retest for Holiday.

C. Repair Procedure - Field Cuts or Large Damage

1. Remove burrs from field cut ends or handling damage and smooth out edge of polyurethane coating.

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2. Remove all traces of oil, grease, dust, dirt, etc.

3. Roughen area to be patched with rough grade sandpaper (40 grit). Feather edges and include overlap of 2 inches of roughened polyurethane in area to be patched.

4. Apply a 30 mil coat of repair material described above, in accordance with manufacturer's recommendations. Work repair material into scratched surface by, brushing. Feather edges of repair material into prepared surface. Cover at least 1 inch of roughed area surrounding damage, or adjacent to field cut.

a. Test repairs for Holidays per Paragraph 3.12.B. of this Section.

3.14 FIELD-APPLIED CEMENT-MORTAR LINING

A. General

1. Except for requirements specified in this section, lining of steel pipe shall be in accordance with AWWA C602.

2. After joints are welded, air tested, and coated, and bedding and backfill have been placed, begin cleaning and lining operation with approval of Owner’s Representative.

a. Access for cleaning and lining operations shall be at pipe access manholes or pipe ends. No cutting of openings in pipe will be allowed, unless acceptable to Owner’s Representative. Upon acceptance by Owner’s Representative, openings may be cut into pipe in order to gain entry for placing lining. Repair of openings, welding, repair of coatings, and backfilling shall conform to other portions of these Specifications.

3. Internal Cleaning

a. Prior to placing lining, pipe shall be thoroughly cleaned of foreign matter, including water.

b. Cleaning may be by hand or mechanical method that is approved by Owner’s Representative.

c. Waste materials and water from cleaning operations shall not be passed through sections of existing pipe or pipe that has already been lined.

d. No pipe shall be lined until inspected and approved by Owner’s Representative.

4. Protection of Appurtenances

a. Prevent mortar from being thrown into pipe openings in accordance with AWWA C602.

b. Outlet openings shall be trimmed, smoothed, and beveled.

c. Damaged or defective areas shall be repaired to satisfaction of Owner’s Representative.

3.15 LINING APPLICATION AT JOINTS

A. Cement-Mortar Lining: For pipe with shop applied cement-mortar lining, place lining at joints in accordance with AWWA C205.

3.16 PATCH OF LINING (PLANT OR FIELD)

1. Repair cracks larger than 1/16". Pipes with disbonded linings will be rejected. Excessive patching of lining shall not be permitted. Apply bonding agent to patch area. Patching of lining shall be allowed where area to be repaired does not exceed 100 square inches and has no dimension greater than 12".

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2. Wherever necessary to patch the pipe, make the patch with the mortar recommended by the pipe manufacturer. Do not install patched pipe until the patch has been properly and adequately cured and unless acceptable to the Owner’s Representative.

3.17 CONNECTIONS WITH EXISTING PIPES

A. Connections to existing pipes shall be made using suitable joints and fittings for the conditions encountered. Each connection with an existing pipe shall be made at the time and under conditions which will least interfere with normal operation. Connections with buried existing flanges shall require removal of grout from the flanges. Remove concrete thrust block when encountered for connections to the existing pipes.

B. Facilities shall be provided for proper dewatering and for disposal of all water removed from the dewatering lines and excavations without damage to adjacent property.

C. Existing valves will leak when in closed position. Contractor shall provide whatever means and equipment is necessary to control water during construction.

3.18 FIELD QUALITY CONTROL

A. Field Welding

1. All welds (100 percent inspection) shall be VT inspected by Contractor’s CWI and marked to indicate acceptance or rejection.

2. Any damage must be repaired.

3. Contractor to perform in the presence of Owner or an independent testing laboratory dye penetrant tests in accordance with ASTM E165, or magnetic particle test in accordance with AWWA C206 and set forth in AWS D1.1.

4. Welds that are defective shall be repaired or replaced whichever is deemed necessary by the Owner’s Representative, at the Contractor’s expense.

5. If the Contractor disagrees with the Owner’s Representative’s interpretation of welding test, test sections may be cut from the joint for physical testing.

6. The procedure of repairing the joint shall be acceptable to the Owner’s Representative before proceeding.

7. Test butt-strap or double-welded lap joint welds by pressurizing connection between the two fillet welds in accordance with AWWA C206.

a. Apply air or other Owner’s Representative-accepted gas into connection between the two fillet welds.

b. Paint welds with soap solution.

c. Mark leaks indicated by escaping gas bubbles.

d. Close threaded openings with flush pipe plugs or by welding them.

8. Submit test results to Owner’s Representative.

B. Testing of Polyurethane Coating: The entire surface area of the pipe exterior shall be inspected using a full loop high voltage holiday tester. Perform testing in accordance with National Association of Corrosion Engineering (NACE) Standard RP0274-98- High Voltage Electrical Inspection of Pipeline Coatings.

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C. Field Testing: All piping systems shall be pressure tested as specified in Section 33 11 13.10 Public Water Utility Piping. Where no pressures are indicated, the pipes shall be subject to 1-1/2 times the maximum design working pressure or 200 psi, whichever is larger. The Contractor shall furnish all test equipment, labor, materials, and devices at no extra cost to the Owner.

3.19 DISINFECTION

A. Disinfection of steel piping shall be in accordance with Section 33 13 00 Disinfecting of Water Utility Distribution.

END OF SECTION

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August 2019 Addendum 1 Project CWAC1900467 Public Water Utility Piping 33 11 13.10 - 1

SECTION 33 11 13.10

PUBLIC WATER UTILITY PIPING

PART 1 GENERAL

1.1 SUMMARY

A. Section Includes: 1. Pipe and fittings for public line. 2. Tapping Sleeves and Valves. 3. Valves and Fire Hydrants. 4. Underground pipe markers. 5. Precast concrete vault. 6. Pipe Support Systems. 7. Bedding and cover materials.

B. Related Sections: 1. Section 03 20 00 – Concrete Reinforcement for Water Line 2. Section 03 30 00 – Cast-In-Place Concrete for Water Line 3. Section 31 05 13 - Soils for Earthwork 4. Section 31 05 16 - Aggregates for Earthwork 5. Section 31 23 33 – Trenching and Backfilling 6. Section 31 23 23 - Fill 7. Section 33 05 25 – Steel Pipe for Water Transmission 8. Section 33 12 16 - Water Utility Valves 9. Section 33 13 00 - Disinfecting of Water Utility Systems

1.2 REFERENCES

A. American Association of State Highway and Transportation Officials: 1. AASHTO T180 - Standard Specification for Moisture-Density Relations of Soils Using a

4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop.

B. American Society of Mechanical Engineers: 1. ASME B16.1 - Cast Iron Pipe Flanges and Flanged Fittings.

C. ASTM International: 1. ASTM A36/A36M - Standard Specification for Carbon Structural Steel. 2. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on

Iron and Steel Products. 3. ASTM A307 - Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile

Strength. 4. ASTM D698 - Standard Test Method for Laboratory Compaction Characteristics of Soil

Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3)). 5. ASTM D1557 - Standard Test Methods for Laboratory Compaction Characteristics of Soil

Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3)).

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6. ASTM D1785 - Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120.

7. ASTM D2241 - Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter.

8. ASTM D2922 - Standard Test Method for Density of Soil and Soil-Aggregate in Place by Nuclear Methods (Shallow Depth).

9. ASTM D3017 - Standard Test Method for Water Content of Soil and Rock in Place by Nuclear Methods (Shallow Depth).

10. ASTM D3139 - Standard Specification for Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals.

11. ASTM F477 - Standard Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe.

D. American Water Works Association: 1. AWWA C104 - ANSI Standard for Cement Mortar Lining for Ductile-Iron Pipe and Fittings

for Water. 2. AWWA C105 - ANSI Standard for Polyethylene Encasement for Ductile-Iron Pipe

Systems. 3. AWWA C110 - ANSI Standard for Ductile-Iron and Gray-Iron Fittings, 3 In. Through 48 In.

(76 mm Through 1,219 mm), for Water. 4. AWWA C111 - ANSI Standard for Rubber-Gasket Joints for Ductile-Iron Pressure Pipe

and Fittings. 5. AWWA C115 - ANSI Standard for Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron

Threaded Flanges. 6. AWWA C151 - ANSI Standard for Ductile-Iron Pipe, Centrifugally Cast, for Water or Other

Liquids. 7. AWWA C153 - ANSI Standard for Ductile-Iron Compact Fittings for Water Service. 8. AWWA C200 - Steel Water Pipe 6 In. (150 mm) and Larger. 9. AWWA C203 - Coal-Tar Protective Coatings and Linings for Steel Water Pipelines -

Enamel and Tape - Hot Applied. 10. AWWA C205 - Cement-Mortar Protective Lining and Coating for Steel Water Pipe - 4 In.

and Larger - Shop Applied. 11. AWWA C206 - Field Welding of Steel Water Pipe. 12. AWWA C207 - Steel Pipe Flanges for Waterworks Service - Sizes 4 In. Through 144 In.

(100 mm Through 3,600 mm). 13. AWWA C208 - Dimensions for Fabricated Steel Water Pipe Fittings. 14. AWWA C213 - Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water

Pipelines. 15. AWWA C222 – Polyurethane Coatings for the Interior and Exterior of Steel Water Pipe

and Fittings 16. AWWA C300 - Reinforced Concrete Pressure Pipe, Steel-Cylinder Type. 17. AWWA C301 - Prestressed Concrete Pressure Pipe, Steel-Cylinder Type. 18. AWWA C500 - Gate Valves for Water and Sewage Systems. 19. AWWA C600 - Installation of Ductile-Iron Water Mains and Their Appurtenances. 20. AWWA C605 - Water Treatment - Underground Installation of Polyvinyl Chloride PVC

Pressure Pipe and Fittings for Water. 21. AWWA C606 - Grooved and Shouldered Joints. 22. AWWA C700 - Cold-Water Meters - Displacement Type, Bronze Main Case.

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23. AWWA C701 - Cold-Water Meters - Turbine Type, for Customer Service. 24. AWWA C702 - Cold-Water Meters - Compound Type. 25. AWWA C706 - Direct-Reading, Remote-Registration Systems for Cold-Water Meters. 26. AWWA C900 - Polyvinyl Chloride (PVC) Pressure Pipe, and Fabricated Fittings, 4 In.

through 12 In. (100 mm Through 300 mm), for Water Distribution. 27. AWWA C905 - Polyvinyl Chloride (PVC) Pressure Pipe and Fabricated Fittings, 14 In.

Through 36 In. (350 mm Through 1,200 mm), for Water Transmission and Distribution. 28. AWWA M6 - Water Meters - Selection, Installation, Testing, and Maintenance.

E. Manufacturer’s Standardization Society of the Valve and Fittings Industry: 1. MSS SP-60 - Connecting Flange Joint between Tapping Sleeves and Tapping Valves.

F. National Fire Protection Agency: 1. NFPA 24 - Standard for the Installation of Private Fire Service Mains and Their

Appurtenances.

1.3 SUBMITTALS

A. Section 01 33 00 Submittal Procedures: Requirements for submittals.

B. Shop Drawings: Indicate piping layout, including piping specialties.

C. Product Data: Submit data on pipe materials, pipe fittings, valves and accessories.

D. Manufacturer's Certificate: Certify Products meet or exceed specified requirements.

1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of piping mains, valves, connections, thrust restraints, and invert elevations.

B. Identify and describe unexpected variations to subsoil conditions or discovery of uncharted utilities.


A. Valves: Mark valve body with manufacturer's name and pressure rating.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Section 01 60 00 Product Requirements: Requirements for transporting, handling, storing, and protecting products.

B. Deliver and store valves in shipping containers with labeling in place.

C. Block individual and stockpiled pipe lengths to prevent moving.

D. Do not place pipe or pipe materials on private property or in areas obstructing pedestrian or vehicle traffic.

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E. Store polyethylene materials out of sunlight.

1.7 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

PART 2 PRODUCTS

2.1 STEEL PIPE

A. Reference Specification Section 33 05 25, Steel Pipe for Water Transmission.

2.2 VALVES

A. Valves: Conform to Section 33 12 16.

2.3 COMBINATION AIR VALVES

A. Manufacturers: 1. Val-Matic 2. APCO 3. Crispin 4. Approved Equal

B. Substitutions: Section 01 60 00 Product Requirements, General and Supplementary Conditions.

2.4 UNDERGROUND PIPE MARKERS

A. Plastic Ribbon Tape: Bright colored, continuously printed, minimum 6 inches wide by 4 mil thick, manufactured for direct burial service.

B. Trace Wire: Magnetic detectable conductor, brightly colored plastic covering, imprinted with "Water" in large letters.

2.5 PRECAST CONCRETE VALVE VAULTS

A. Precast Concrete Valve Vaults: Conform to Section 33 05 17.

2.6 CONCRETE ENCASEMENT AND CRADLES

A. Concrete: Conforming to Section 03 30 00, 4,000 psi 28 day concrete, air entrained rough troweled finish.

B. Concrete Reinforcement: Conform to Section 03 20 00.

2.7 BEDDING AND COVER MATERIALS

A. Bedding: Fill Type A5 as specified in Section 31 05 16.

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B. Cover: Secondary Backfill, as specified in Section 31 05 16.

C. Soil Backfill from Above Pipe to Finish Grade: Soil Type S1, as specified in Section 31 05 13. Subsoil with no rocks over 6 inches in diameter, frozen earth or foreign matter.

2.8 ACCESSORIES

A. Concrete for Thrust Restraints: Conform to Section 03 30 00.

B. Steel rods, bolt, lugs and brackets: ASTM A36/A36M or ASTM A307 Grade A carbon steel.

C. Protective Coating: As indicated on Drawings and conform to Section 09 97 15.

PART 3 EXECUTION

3.1 EXAMINATION

A. Section 01 30 00 Administrative Requirements: Verification of existing conditions before starting work.

B. Verify existing utility water main size, location, and invert are as indicated on Drawings.

3.2 PREPARATION

A. Pre-Construction Site Photos: 1. Take photographs along centerline of proposed pipe trench; minimum one photograph

for each 50 feet of pipe trench. 2. Show mail boxes, curbing, lawns, driveways, signs, culverts, and other existing site

features. 3. Include project description, date taken and sequential number on back of each

photograph.

B. Cut pipe ends square, ream pipe and tube ends to full pipe diameter, remove burrs. Use only equipment specifically designed for pipe cutting. The use of chisels or hand saws will not be permitted. Grind edges smooth with beveled end for push-on connections.

C. Remove scale and dirt on inside and outside before assembly.

D. Prepare pipe connections to equipment with flanges or unions.

3.3 BEDDING

A. Excavate pipe trench in accordance with Section 31 23 33 for Work of this Section. Hand trim excavation for accurate placement of pipe to elevations indicated on Drawings.

B. Dewater excavations to maintain dry conditions and preserve final grades at bottom of excavation.

C. Provide sheeting and shoring in accordance with Section 31 23 33.

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D. Place bedding material at trench bottom, level fill materials in one continuous layer not exceeding 12 inches compacted depth; compact to 95 percent.

3.4 INSTALLATION - PIPE

A. Install pipe in accordance with AWWA M11.

B. Handle and assemble pipe in accordance with manufacturer’s instructions and as indicated on Drawings.

C. Steel Rods, Bolt, Lugs, and Brackets: Coat buried steel with one coat of coal tar coating before backfilling.

D. Maintain horizontal separation of water main from sewer piping in accordance with TCEQ Requirements.

E. Install pipe to indicated elevation to within tolerance of 1/10 (0.01) foot.

F. Weld pipe in accordance with AWWA C206. Weld joints in accordance with AWWA C205.

G. Flanged Joints: Not to be used in underground installations except within structures.

H. Route pipe in straight line. Relay pipe that is out of alignment or grade.

I. Install pipe with no high points. If unforeseen field conditions arise which necessitate high points, install air release valves as directed by Engineer.

J. Install pipe to have bearing along entire length of pipe. Excavate bell holes to permit proper joint installation. Do not lay pipe in wet or frozen trench.

K. Prevent foreign material from entering pipe during placement.

L. Install pipe to allow for expansion and contraction without stressing pipe or joints.

M. Close pipe openings with watertight plugs during work stoppages.

N. Install access fittings to permit disinfection of water system performed under Section 33 13 00.

O. Establish elevations of buried piping with not less than 3 ft of cover. Measure depth of cover from final surface grade to top of pipe barrel.

P. Install plastic ribbon tape continuous over top of bedding above pipe line; coordinate with Section 31 23 33.

3.5 INSTALLATION - VALVES

A. Install valves in accordance with Section 33 12 16.

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3.6 POLYETHYLENE ENCASEMENT

A. Encase piping in polyethylene to prevent contact with surrounding backfill material.

B. Install in accordance with AWWA C222.

C. Terminate encasement 3 to 6 inches above ground where pipe is exposed.

3.7 THRUST RESTRAINT

A. Thrust Blocking 1. Provide valves, tees, bends, caps, and plugs with concrete thrust blocks. Pour concrete

thrust blocks against undisturbed earth. Locate thrust blocks at each elbow or change of pipe direction to resist resultant force and so pipe and fitting joints will be accessible for repair.

2. Install tie rods, clamps, set screw retainer glands, or restrained joints. Protect metal restrained joint components against corrosion by applying a bituminous coating, or by concrete mortar encasement of metal area. Do not encase pipe and fitting joints to flanges.

3. Install thrust blocks, tie rods, and joint restraint at dead ends of water main.

B. Restrained Joints 1. Install restrained joint pipe, valves, fittings, and appurtenances as specified above at the

locations shown on the plans. 2. Install restrained joint pipe, valves, fittings, and appurtenances as specified above in lieu

of thrust blocking when approved by the Engineer.

3.8 BACKFILLING

A. Backfill around sides and to top of pipe in accordance with Section 31 23 33.

B. Maintain optimum moisture content of bedding material to attain required compaction density.

3.9 DISINFECTION OF POTABLE WATER PIPING SYSTEM

A. Flush and disinfect system in accordance with Section 33 13 00.

3.10 FIELD QUALITY CONTROL

A. General and Supplementary Conditions: Field inspecting, testing, adjusting, and balancing.

B. Pressure test system to 200 psi. Repair leaks and re-test. 1. After completion of pipeline installation, including backfill, but prior to final connection

to existing system, conduct, in presence of Engineer, concurrent hydrostatic pressure and leakage tests in accordance with AWWA M11.

2. Provide equipment required to perform leakage and hydrostatic pressure tests. 3. Test Pressure: Not less than 200 psi or 50 psi in excess of maximum static pressure,

whichever is greater.

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4. Conduct hydrostatic test for at least two-hour duration. 5. No pipeline installation will be approved when pressure varies by more than 5 psi at

completion of hydrostatic pressure test. 6. Before applying test pressure, completely expel air from section of piping under test.

Provide corporation cocks so air can be expelled as pipeline is filled with water. After air has been expelled, close corporation cocks and apply test pressure. At conclusion of tests, remove corporation cocks removed and plug resulting piping openings.

7. Slowly bring piping to test pressure and allow system to stabilize prior to conducting leakage test. Do not open or close valves at differential pressures above rated pressure.

8. Examine exposed piping, fittings, valves, hydrants, and joints carefully during hydrostatic pressure test. Repair or replace damage or defective pipe, fittings, valves, hydrants, or joints discovered, following pressure test.

9. No pipeline installation will be approved when leakage is greater than that determined by the following formula:

L = (SD √𝑃)/148,000

L = testing allowance, in gallons per hour (gph)

S = length of pipe tested, in feet (ft)

D = nominal diameter of pipe, in inches (in.)

P = average test pressure during leakage test, in pounds per square inch (psig)

10. When leakage exceeds specified acceptable rate, locate source and make repairs. Repeat test until specified leakage requirements are met.

C. When tests indicate Work does not meet specified requirements, remove Work, replace and retest.

END OF SECTION

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