Amendment 0008_33 16 15_revised.pdf

Civil and Fire Suppression MAY 2021

MCRC BROOKLYN, NY 2018-117-10

SECTION TABLE OF CONTENTS

DIVISION 33 - UTILITIES

SECTION 33 16 15

WATER STORAGE STEEL TANKS

04/08

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Design and Construction Standards

2.1.2 Welding

2.1.3 Design Requirements

2.1.4 Coatings Certification

2.2 MATERIALS

2.2.1 Steel

2.2.2 Shop Fabrication

2.2.3 Ductile-Iron Pipe

2.2.3.1 Bell-and-Plain End Pipe

2.2.3.2 Flanged Pipe

2.2.4 Specials and Fittings (except for overflow pipe)

2.2.4.1 Ductile-Iron with Bell-and-Plain End

2.2.4.2 Ductile-Iron with Flanged Ends

2.2.4.3 Fittings for Screw-Joint Pipe

2.2.4.4 Joints Inside Valve Chamber

2.2.5 Valves

2.2.5.1 Gate Valves

2.2.5.2 Butterfly Valves

2.2.5.3 Check Valves

2.2.5.4 Altitude Valve

2.2.6 Pressure Gauge

2.3 ASSEMBLIES

2.3.1 Tank Accessories

2.3.1.1 Manholes and Pipe Connections

2.3.1.2 Overflow

2.3.1.3 Vent

2.3.1.4 Ladders and Safety Devices

2.3.1.5 Scaffold Cable Support

2.3.1.6 Coating for Bolted Tanks

2.3.2 Anchors for Tank

2.3.3 Tank Insulation

2.4 CONCRETE WORK

2.5 CHLORINE

PART 3 EXECUTION

3.1 FOUNDATIONS

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3.2 EXCAVATING, FILLING, AND GRADING

3.3 CATHODIC PROTECTION

3.4 TANK INSTALLATION

3.4.1 Welding

3.4.2 Erection

3.4.3 Inspections and Testing

3.5 PIPING INSTALLATION (EXCEPT FOR OVERFLOW PIPING)

3.5.1 General Guidelines

3.5.2 Testing of Valves and Piping

3.5.3 Polyethylene Encasement of Underground Ductile-Iron Piping

3.5.4 Plugging Ends

3.6 PAINTING AND COATING OF TANK

3.6.1 Bolted Tanks

3.7 DISINFECTION

3.7.1 Tank

3.7.2 Piping

3.8 INSPECTION AND REPAIR

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SECTION 33 16 15

WATER STORAGE STEEL TANKS

04/08

PART 1 GENERAL

1.1 REFERENCES

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

AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)

ASCE 7 (2017) Minimum Design Loads for Buildings and Other Structures

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C104/A21.4 (2016) Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

AWWA C105/A21.5 (2010) Polyethylene Encasement for Ductile-Iron Pipe Systems

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

AWWA C111/A21.11 (2017) Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

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

AWWA C150/A21.50 (2014) Thickness Design of Ductile-Iron Pipe

AWWA C151/A21.51 (2017) Ductile-Iron Pipe, Centrifugally Cast

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

AWWA C504 (2015) Standard for Rubber-Seated Butterfly Valves

AWWA C508 (2017) Swing-Check Valves for Waterworks Service, 2 In. Through 48-In. (50-mm Through 1,200-mm) NPS

AWWA C600 (2017) Installation of Ductile-Iron Mains and Their Appurtenances

AWWA C652 (2011) Disinfection of Water-Storage Facilities

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AWWA D100 (2011) Welded Steel Tanks for Water Storage

AWWA D102 (2017) Coating Steel Water-Storage Tanks

AWWA D103 (2009; Errata 2010; Addenda 2014) Factory-Coated Bolted Steel Tanks for Water Storage

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B16.3 (201 6) Malleable Iron Threaded Fittings, Classes 150 and 300

ASME B40.100 (2013) Pressure Gauges and Gauge Attachments

ASTM INTERNATIONAL (ASTM)

ASTM A197/A197M (2000; R 2015) Standard Specification for Cupola Malleable Iron

ASTM A48/A48M (2003; R 2012) Standard Specification for Gray Iron Castings

MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS

INDUSTRY (MSS)

MSS SP-80 (2013) Bronze Gate, Globe, Angle and Check Valves

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 22 (2018) Standard for Water Tanks for Private Fire Protection

NSF INTERNATIONAL (NSF)

NSF/ANSI 61 (2017) Drinking Water System Components - Health Effects

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-600-01 (2016; with Change 3, 2019) Fire Protection Engineering for Facilities

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Tank Installation ; G

Tank design and fabrication and tank foundation design and drawings. Submit calculations sealed by a professional engineer.

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Include design loads and configurations. Seismic and wind load variables are on Drawing GI001. Refer to Geotechnical Report for soil conditions. Foundation design shall include anchor design.

Geotechnical Report can be found following Section 00 31 00

AVAILABLE PROJECT INFORMATION.

SD-03 Product Data

System Description ; G Foundations ; G

Tank Related Components: Manufacturer's cut sheets and drawings for equipment associated with the storage tank including flanges, heaters, grounding, insulation, coatings, level gauges, and other associated equipment.

Water Tank and Related Components: Manuals including manufacturer contact information, a copy of NFPA 22 , and routine service / inspection items shall be provided at least 14 days prior to field training.

SD-05 Design Data

Calculations

SD-06 Test Reports

Tank Installation Concrete Testing Results - See Section 03 30 00 - CAST-IN-PLACE

CONCRETE

Steel Welding Testing Results - See Section 05 05 23.16 STRUCTURAL

WELDING

Testing of Valves and Piping

SD-07 Certificates

System Description Foundations

1.3 DELIVERY, STORAGE, AND HANDLING

Deliver paint in unopened containers with unbroken seals and labels showing designated name, specification number, color, directions for use, manufacturer, and date of manufacture, legible and intact at time of use.

Handle and store water storage tank systems, components, and parts to prevent distortions and other damage that could affect their structural, mechanical, or electrical integrity. Replace damaged items that cannot be restored to original condition. Store items subject to deterioration by exposure to elements, in a well-drained location, protected from weather, and accessible for inspection and handling.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Submit certification by an independent third-party organization that all interior coating and materials that come in contact with the potable water

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cjgray comply with NSF/ANSI 61 . Submit a certificate signed by a registered professional engineer, providing the following information:

a. Description of the structural design loading conditions used for the design of entire tank including the foundation.

b. Description of the structural design method and codes used in establishing the allowable stresses and safety factors applied in the design.

c. A statement verifying that the structural design has been checked by experienced engineers specializing in hydraulic structures.

d. A statement verifying that the detail drawings have been checked by experienced engineers specializing in hydraulic structures to determine that they agree with the design calculations in member sizes, dimensions, and fabricating process as prescribed by applicable ACI and AWWA standards.

e. Provide all calculations associated with the water tank and foundation including but not limited to concrete mix design and design calculation.

2.1.1 Design and Construction Standards

The design, fabrication, and erection of the elevated tank shall be in accordance with the applicable requirements of AWWA D100 or AWWA D103 except as modified herein. Submit Design Analyses and Calculations. No additional thickness for corrosion allowance will be required. Design metal temperature shall be as required by manufacturer per design criteria and expected environment temperature extremes . The elevated tank shall be designed for a basic wind speed as defined in the design criteria in accordance with ASCE 7 or designed in accordance with AWWA D100 wind load design, whichever provides the greater pressure. The elevated tank shall be designed for a snow load as defined in the design criteria .

2.1.2 Welding

Qualification of welding procedures, welders, and welding operators shall be in accordance with Section 8.2 of AWWA D100.

2.1.3 Design Requirements

A. The tank shall have a storage capacity of 195,000 gallons . The tank diameter shall be not less than 31 feet . The tank shall be of the style shown.

B. Tank supports, piping offsets, fittings, and any other accessories required shall be furnished as specified to provide a complete installation and to eliminate interference with other construction.

C. Fire water storage tank shall be of welded or bolted steel construction, ground level, cone roof, divided into two compartments with an integral "S" baffle, provided with heaters, insulated from freezing, and provided with structural foundation. Tank installation shall comply with NFPA 22 , UFC 3-600-01 , UFC 3-600-10n. Tank shall be designed for appropriate seismic and snow load conditions.

D. Tank and foundation shall be sealed by a registered

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E. Tank sizing, outlet locations, pump building, fill lines, etc. are outlined on fire protection drawings. Tank shall satisfy performance criteria of fire protection drawings in addition to indicated standards and UFC's. Tank shall be constructed by a manufacturer that has designed and installed fire storage tanks for at least 5 years with at least 20 tanks installed as of contract date.

F. Tank size shall be approximately 31 feet in diameter and shall be coordinated with the adjacent fire pump house building that will use the tank as one side of the building. Coordinate final size of tank and pump building so that connections are sealed.

G. Tank and all exposed metal shall be painted to match the Reserve Training Center (RTC). Refer to Section 09 90 00 for required coatings and application.

H. Interior coating must be a minimum ICS-2 two-part epoxy for extended use per AWWA D102.

2.1.4 Coatings Certification

Coating materials for interior applications and all other materials which will be in normal contact with potable water shall conform to NSF/ANSI 61 .

Certification by an independent third-party organization that all interior coatings and materials, that come in contact with potable water, comply with NSF/ANSI 61 shall be provided.

2.2 MATERIALS

Provide materials conforming to the following requirements:

2.2.1 Steel

Section 2 of AWWA D100 or Section 2 of AWWA D103.

2.2.2 Shop Fabrication

Section 9 of AWWA D100 or Section 7 of AWWA D103.

2.2.3 Ductile-Iron Pipe

Pipe for fluid conductors, except for overflow pipe, shall be ductile-iron pipe and shall be either of the following:

2.2.3.1 Bell-and-Plain End Pipe

AWWA C150/A21.50 and AWWA C151/A21.51 , for not less than 150 psi working pressure, unless otherwise shown or specified. Joints shall be push-on or mechanical-joint conforming to AWWA C111/A21.11 . Pipe shall be cement mortar lined in accordance with AWWA C104/A21.4 . Linings shall be standard thickness.

2.2.3.2 Flanged Pipe

Flanged pipes shall conform to the applicable portions of AWWA C110/A21.10 , AWWA C115/A21.15 and AWWA C151/A21.51 , for not less than 150 psi working pressure, unless otherwise shown or specified. Pipe shall have flanged

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2.2.4 Specials and Fittings (except for overflow pipe)

2.2.4.1 Ductile-Iron with Bell-and-Plain End

AWWA C110/A21.10 and AWWA C151/A21.51 for not less than 150 psi working pressure, unless otherwise shown or specified. Specials and fittings shall be cement mortar lined in accordance with AWWA C104/A21.4 . Linings shall be standard thickness.

2.2.4.2 Ductile-Iron with Flanged Ends

AWWA C110/A21.10 and AWWA C151/A21.51 for not less than 150 psi working pressure unless otherwise shown or specified. Fittings shall have flanged ends in accordance with AWWA C110/A21.10 . Specials and fittings shall be cement mortar lined in accordance with AWWA C104/A21.4 . Linings shall be standard thickness.

2.2.4.3 Fittings for Screw-Joint Pipe

Malleable-iron, galvanized, 150 psi , ASTM A197/A197M , threaded ends, ASME B16.3 .

2.2.4.4 Joints Inside Valve Chamber

All joints inside the valve chamber shall be flanged.

2.2.5 Valves

2.2.5.1 Gate Valves

Gate valves shall be opened by turning counterclockwise. Valves 3 inches and larger shall be iron body, brass mounted, conforming to AWWA C500.

Valves smaller than 3 inches shall be all bronze and shall conform to MSS SP-80 , Type 1, class 150. Valves 3 inches or larger located in valve chambers shall be equipped with hand-operating wheels and shall be flanged.

2.2.5.2 Butterfly Valves

Butterfly valves shall be opened by turning counterclockwise. Valves shall conform to AWWA C504. Body and disc shall be cast iron, conforming to ASTM A48/A48M. Shaft shall be 18-8 stainless steel. Resilient seat shall be bonded to the valve body. Butterfly valves shall be stainless steel to rubber seated, tight closing type.

2.2.5.3 Check Valves

Check valves shall be of the horizontal swing-check type, suitable for the purpose and the operating conditions. The body shall be iron and shall have a removable gate assembly and a cover removable for inspection. The gate, gate seat, shaft, gate studs, and nuts shall be bronze or other suitable alloy. Valves shall conform to AWWA C508.

2.2.5.4 Altitude Valve

The supply to the tank shall be controlled by a 3 inch altitude valve, SECTION 33 16 15 Page 8 automatic in operation and accurately set to prevent overflow of the tank.

The valve shall have flanged ends and a heavy cast iron body, shall be bronze fitted with renewable cups and seats, and shall be designed without metal-to-metal seats. The valve shall be cushioned when opening and closing to prevent water hammer or shock. Valves shall be provided with a travel indicator.

2.2.6 Pressure Gauge

Pressure gauge of the direct-reading type, equipped with a shutoff cock, shall be provided, in the valve chamber, on the tank side and on the discharge side of the check or altitude valve. Gauges shall have 6 inch dials, shall be stem mounted, and shall conform to ASME B40.100 . Accuracy of gauges shall be Grade A or better. Gauges shall be calibrated in psi in not more than 2 psi increments from 0 to 50 psi in excess of the normal operating pressure at the tank.

2.3 ASSEMBLIES

2.3.1 Tank Accessories

Section 7 of AWWA D100 or Section 5 of AWWA D103 and as specified.

Additional requirements for accessories are as follows:

2.3.1.1 Manholes and Pipe Connections

Section 7 of AWWA D100 and Section 5 of AWWA D103 represent the minimum requirements. Number, type, location, and size of manholes and pipe connections shall be as shown on FX101 the drawings. Inlet pipe connections to extend 18 inches above tank bottom and shall be provided with deflectors as shown on the drawings. Outlet pipe connections to extend 18 inches above tank bottom and shall be provided with vortex breakers as shown on the drawings. One manhole to facilitate interior inspection and maintenance shall be provided.

2.3.1.2 Overflow

The overflow for the tank shall consist of an overflow weir and stub overflow.

2.3.1.3 Vent

Vent shall be welded to the cover plate of the center manhole on the roof. Vent will be tank manufacturer's standard type mushroom vent with aluminum bird screen. Screening for vent shall conform to Section 5.7.2 of AWWA D100 or Section 5.7.2 of AWWA D103which ensures fail-safe operation in the event that screen frosts over and the bottom of the screen shall be sufficiently elevated for snow consideration in the area.

2.3.1.4 Ladders and Safety Devices

Ladders and safety devices shall be provided in accordance with Sections

7.4 and 7.5 of AWWA D100 or Sections 5.4 and 5.5 of AWWA D103. Location of ladders shall be as shown on the drawings. Sections 7.4 and 7.5 of AWWA D100 and Sections 5.4 and 5.5 of AWWA D103 represent the minimum requirement. In addition, safety cage, rest platforms, roof ladder handrails, and other safety devices shall be provided as required by federal or local laws or regulations.

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2.3.1.5 Scaffold Cable Support

Provision shall be made for the attachment of a scaffold cable support at the top of the roof on welded tanks.

2.3.1.6 Coating for Bolted Tanks

As supplied by the manufacturer.

2.3.2 Anchors for Tank

The following requirements shall be met:

a. An adequate number of anchors designed to prevent overturning of the tank when empty shall be installed. If anchor bolts are used, the nominal diameter shall not be less than one inch , plus a corrosion allowance of at least 1/4 inch on the diameter. If anchor straps are used, they shall be pre-tensioned before welding to the tank shell.

b. The anchor bolts shall be a right angle bend, hook, or plate washer, while anchor straps shall have only a plate welded to the bottom. The anchors shall be inserted into the foundation to resist the computed uplift.

c. Attachment of anchors to the shell shall not add significant localized stresses to the shell. The method of attachment shall consider the effects of deflection and rotation of the tank shell. Anchors shall not be attached to the tank bottom. Attachment of the anchor bolts to the shell shall be through stiffened chair-type assemblies or anchor rings of adequate size and height.

d. Tank shall have a data plate on the exterior of the tank insulation and within the pump house.

2.3.3 Tank Insulation

a. Tank must be insulated.

b. Insulation shall be designed with tank heater to prevent freezing.

c. Fiberglass batts with painted steel cladding shall be the minimum required.

2.4 CONCRETE WORK

Concrete work shall conform to Section 03 30 00 CAST-IN-PLACE CONCRETE.

2.5 CHLORINE

IMPORTANT: Chlorinated water used for flushing, testing, commissioning, or any other purpose generating run-off shall be captured or de-chlorinated to protect fish in nearby streams.

IMPORTANT

CHLORINATED WATER SHALL NOT BE DISCHARGED WITHOUT PASSING THROUGH

DE-CHLORINATING TABLETS TO PROTECT FISH IN STREAMS.

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PART 3 EXECUTION

3.1 FOUNDATIONS

Foundations for the tank and for the valve chamber shall be constructed of concrete, reinforced where necessary, and designed in accordance with Section 12 of AWWA D100 or Sections 11 and 8.5 of AWWA D103 except as shown or specified herein. An AWWA D100 Type 1 or an AWWA D103 Type 1 or Type 2 foundation shall be provided for the tank . Factor of safety on overturning of tanks under design wind load shall be 1.33 minimum. When a footing is required, an inverted truncated pyramid of earth with 2 on 1 side slopes above top of footing may be used in determining overturning stability.

3.2 EXCAVATING, FILLING, AND GRADING

Excavating, filling, and grading shall conform to the applicable requirements of Section 31 00 00 EARTHWORK.

3.3 CATHODIC PROTECTION

Storage tank shall be grounded using a grounding rod per NEC and MFG.

3.4 TANK INSTALLATION

Submit detail and erection drawings, before proceeding with any fabrication. Complete drawings with details of steel, pipe, and concrete work, and of the assembling of items required for the total installation.

Use standard welding symbols as recommended by the American Welding Society. Details of welded joints referenced on the drawings shall be included. Tank installation shall be in accordance with the following requirements:

3.4.1 Welding

Section 8 of AWWA D100 or Section 6 of AWWA D103.

3.4.2 Erection

Section 10 of AWWA D100 or Section 8 of AWWA D103.

3.4.3 Inspections and Testing

Tank inspection and testing shall be in accordance with Section 11 of AWWA D100 or Section 9 of AWWA D103. Mill and shop inspections are required and shall be performed by an approved commercial inspection agency.

Perform the radiographic inspections of the welded tank shell, the hydrostatic test and the vacuum box leak test of the tank bottom. Final hydrostatic and leak tests shall be performed before painting of welded tanks.

3.5 PIPING INSTALLATION (EXCEPT FOR OVERFLOW PIPING)

3.5.1 General Guidelines

Where details of fabrication or installation are not shown on the drawings, installation shall conform to Section 1 and 3 of AWWA C600.

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3.5.2 Testing of Valves and Piping

After the tank has been erected and the valves and piping installed, and before field painting is begun, the valves and piping shall be hydrostatically tested in accordance with Section 4 of AWWA C600. Submit each coating manufacturer's technical data, application instructions, Safety Data Sheets (SDS), and certificate for compliance for VOC content.

Submit copies of the following test results:

a. Manufacturer's mill test reports for plate material.

b. Mill and shop inspections by a commercial inspection agency.

c. After acceptance of the structure, the radiographic film and test segments.

d. At the conclusion of the work, a written report covering the hydrostatic test and certifying that the work was inspected in accordance with Section 11.2.1 of AWWA D100.

Replace with sound material any defective material disclosed by the pressure test; the test shall be repeated until the test results are satisfactory.

3.5.3 Polyethylene Encasement of Underground Ductile-Iron Piping

Polyethylene encasement of underground ductile-iron piping shall be provided in addition to asphaltic coating in accordance with

AWWA C105/A21.5 .

3.5.4 Plugging Ends

Cap or plug pipe ends left for future connections as directed.

3.6 PAINTING AND COATING OF TANK

Each coating manufacturer's technical data, application instructions, SDS, and certificate for compliance for VOC content must be submitted to the Contracting Officer. Application, curing time, mixing and thinning of the coating materials must be in strict accordance with the manufacturers instructions. The use of thinners must not alter the required minimum dry thickness or adversely affect the VOC content.

3.6.1 Bolted Tanks

Not used .

3.7 DISINFECTION

The tank and connecting lines thereto shall be disinfected with chlorine before being placed in operation.

3.7.1 Tank

The tank shall be disinfected in accordance with AWWA C652. After the chlorination procedure is completed and before the storage facility is placed in service, the Contracting Officer will collect samples of water in properly sterilized containers for bacteriological testing from the full facility in accordance with Section 7 of AWWA C652. The tank will

SECTION 33 16 15 Page 12 not be accepted until satisfactory bacteriological results have been obtained.

3.7.2 Piping

The valves and piping shall be disinfected in accordance with Section

33 11 00 WATER UTILITY DISTRIBUTION PIPING.

3.8 INSPECTION AND REPAIR

Prior to tank repair job, perform a detailed inspection of the structure and submit report by a certified inspector.

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