SECTION 02668

FIRE WATER SYSTEMS

PART 1 - GENERAL

1.1	RELATED DOCUMENTS

A.	Drawings and general provisions of Contract apply to work of this Section.

1.2	DESCRIPTION OF WORK

A.	Extent of fire water systems work is indicated on drawings and schedules, and by requirements of this section.

B.	Refer to Division-2 section "EARTHWORK/UNDERGROUND UTILITIES" for excavation and backfill required for fire water systems; not work of this section.

C.	Refer to Division-3 sections for concrete work required for fire water systems; not work of this section.

D.	Refer to Division-15 section "FIRE PROTECTION" for interior building systems including sprinklers and standpipes; not work of this section.

1.3	QUALITY ASSURANCE

A.	Manufacturer's Qualifications: Firms regularly engaged in manufacture of fire water system's products of types, materials, and sizes required, whose products have been in satisfactory use in similar service for not less than 5 years.

B.	Installer's Qualifications: Firm with at least 3 years of successful installation experience on projects with fire water work similar to that required for project.

C.	Codes and Standards:

1.	NFPA Compliance: Install fire water systems in accordance with NFPA 24 "Standard for the Installation of Private Fire Service Mains and Their Appurtenances."

2.	Local Fire Department/Marshal Regulations: Comply with governing regulations pertaining to hydrants, including hose unit threading and similar matching of connections.

3.	UL Compliance: Provide fire hydrants that comply with UL 246 "hydrants for fire protection service" and are listed by UL.

1.4	SUBMITTALS

A.	Product Data: Submit manufacturer's technical product data and installation instructions for fire water system materials and products.

B.	Shop Drawings: Submit shop drawings for fire water systems, showing piping materials, size, locations, and elevations. Include details of underground structures, connections, thrust blocks, and anchors. Show interface and spatial relationship between piping and proximate structures.

C.	Record Drawings: At project closeout, submit record drawings of installed fire water system piping and products, in accordance with requirements of Division-1.

D.	Maintenance Data: Submit maintenance data and parts lists for fire water system materials and products. Include this data, product data, shop drawings, and record drawings in maintenance manual; in accordance with requirements of Division-1, if applicable.

PART 2 - PRODUCTS

2.1	IDENTIFICATION

A.	Underground-Type Plastic Line Marker: Manufacturer's standard permanent, bright-colored, continuous-printed plastic tape, intended for direct-burial service; not less than 6 inches wide x 4 mils thick. Provide blue tape with black printing reading "CAUTION WATER LINE BURIED BELOW."

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering identification markers which may be incorporated in the work include, but are not limited to, the following:

a.	Allen Systems Inc.

b.	Seton Name Plate Corp.

2.2	PIPES AND PIPE FITTINGS

A.	General: Provide piping materials and factory-fabricated piping products of sizes, types, pressure ratings, temperature ratings, and capacities as indicated. Provide materials and products complying with NFPA 24 where applicable. Provide sizes and types matching piping and equipment connections; provide fittings of materials which match pipe materials used in fire water piping systems. Where more than one type of materials or products are indicated, selection is Installer's option.

1.	Iron Pipe & Fittings: Pipe shall be ductile iron (DI) with minimum thickness of Class 51 for 3 and 4 inch diameter pipe and Class 50 for larger pipe. Fittings may be ductile iron or gray iron (GI) with pressure rating equal to that of the pipe unless otherwise specified in the Drawings. The materials shall be as follows:

a.	Pipe: - ANSI A21.51 (AWWA C151)

b.	Fittings - ANSI A21.10 (AWWA C110)

c.	Joints - Mechanical & Push-on, ANSI A21.11 (AWWA C111)

d.	Joints - Flanged ANSI A21.10 & A21.15 (AWWA C110 & C115) Class 125 and 1/8 inch full faced rubber gaskets.

e.	Restrained Joints: - Ductile iron mechanical joint retainer glands approved equal to American Cast Iron Pipe Co.

f.	Flexible Joints - Boltless with 15 joint deflection per applicable portions of ANSI A21.10 (AWWA C110) approved equal to "Flex-Lok" by American Cast Iron Pipe Co.

g.	Bolts & Nuts - Bolts, ANSI B18.21; Nuts, B18.2.1; low carbon steel per ASTM A 307, Grade B.

2.	Polyvinyl Chloride Pipe (PVC): 4 inch to 12 inch AWWA C900, Class 150, having integral wall-thickened bell ends without increase in DR and outside diameter equivalent to ductile iron pipe. Use iron fitting per above. Joints shall be elastomeric seals per ASTM D 3139 and ASTM F 477. Lubrication shall be non-toxic, NSF approved for potable water. Polyvinyl chloride pipe less than 4 inches shall be Schedule 40, unless otherwise noted on construction drawings.

3.	Coatings, Linings & Encasement (Iron Pipe): All pipe and fittings shall be cement mortar lined per ANSI A21.4 (AWWA C104) and bituminous coated per above.

Where protective interior lining is called for, use 20 mil (minimum dry thickness) virgin polyethylene per ASTM D 1248 compounded with an inert filler and with sufficient carbon black to resist ultraviolet rays during above ground storage, heat bonded to pipe and fittings, approved equal to "Polybond" by American Cast Iron Pipe Company.

Polyethylene Encasement, where required, shall be per ANSI A21.5 (AWWA C105).

4.	Pipe fittings scheduled for field painting shall not receive an exterior bituminous coating. Instead, the pipe and fitting exterior shall be cleaned thoroughly and given one (1) shop coat of rust-inhibitive primer compatible with the field paint applied in accordance with the manufacturer's recommendations.

5.	Machined surfaces shall be cleaned and coated with a suitable rust-
preventative coating at the shop immediately after machining.

2.3	VALVES

A.	Gate Valves: Provide gate valves, UL-listed, 175 psi working pressure for 12 inches and smaller, 150 psi for sizes larger than 12 inches. Provide threaded, flanged, hub, or other end configurations to suit size of valve and piping connection. Provide inside screw type for use with indicator post, iron body bronze mounted, non-rising stem, solid wedge disc.

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering gate valves which may be incorporated in the work include, but are not limited to, the following:

American Valve Mfg. Corp.

American-Darling Valve; Div. of American Cast Iron Pipe Co.

Clow Corp.; Valve Div.

Fairbanks Co.

Kennedy Valve; Div. of ITT Grinnell Valve Co., Inc.

Stockham Valves & Fittings Inc.

United Brass Works Inc.

United States Pipe and Foundry Co.

Waterous Co.

Mueller Co.

B.	Indicator Posts: Provide indicator posts, UL-listed, designed for use with underground gate valves to provide aboveground means for operating valves and indicating position of valves. Provide telescopic barrel type with indicating target, intended for use with gate valves 4 inches through 14 inches, with operating wrench.

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering indicator posts which may be incorporated in the work include, but are not limited to, the following:

American-Darling Valve; Div. of American Cast Iron Pipe Co.

Clow Corp.; Valve Div.

Eddy-Iowa; Div. Clow Corp.

Fairbanks Co.

Grinnell Fire Protection Systems Co., Inc.

Kennedy Valve; Div. of ITT Grinnell Valve Co., Inc.

Mueller Co.

Standard Fire Protection Co.

Stockham Valves & Fittings Inc.

United States Pipe and Foundry Co.

Waterous Co.

C.	Butterfly Valves: Provide butterfly valves, UL-listed, 175 psi working pressure for 2 inches through 12 inches, 150 psi for sizes larger than 12 inches. Provide gear actuator and position indicator.

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering butterfly valves which may be incorporated in the work include, but are not limited to, the following:

Demco; Div. of Cooper Industries Inc.

ITT Grinnell; Div. of ITT Industries of Canada Ltd.

Kennedy Valve; Div. of ITT Grinnell Valve Co., Inc.

Keystone Valve; Div. of Keystone International Inc.

Nibco Inc.

Powell (Wm.) Co.

Pratt (Henry) Co.

Tomoe Valve Co. Ltd.

Mueller Co.

D.	Check Valves: Provide check valves as indicated, UL-listed, 175 psi working pressure for 2 inches through 12 inches, 150 psi for sizes larger than 12 inches. Provide swing type, iron body bronze mounted with metal- to-metal or rubber-faced checks. Provide threaded, flanged, or hub end, to suit size and piping connections.

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering check valves which may be incorporated in the work include, but are not limited to, the following:

American-Darling Valve; Div. of American Cast Iron Pipe Co.

Clow Corp.; Valve Div.

Fairbanks Co.

Kennedy Valve; Div. of ITT Grinnell Valve Co., Inc.

Mueller Co.

Nibco Inc.

Stockham Valves & Fittings Inc.

Walworth Co.

Waterous Co.

E.	Detector Check Valves: Provide detector check valves as indicated, UL listed, 175 psi working pressure. Provide iron or brass bodied with weighted clapper and provisions for connection of by-pass meter around check.

1.	Available Manufacturers: Subject to compliance with requirements, manufacturers offering detector check valves which may be incorporated in the work include, but are not limited to the following:

Ames Co., Inc.

Central Sprinkler Corp.

Firematic Sprinkler Devices Inc.

Globe Fire Equipment Co.

Hersey Products Inc.

Kennedy Valve; Division of ITT Grinnel Valve Co., Inc.

Mueller Co.

Reliable Automatic Sprinkler Co., Inc.

Viking Corp.

F.	Fire Hydrant: AWWA C502, and shall be equipped with a minimum of one pumper outlet nozzle 4-1/2 inches in diameter and two hose nozzles 2-1/2 inches in diameter. Paint hydrant with one coat of red-lead and two coats of oil point using the local color code based on fire flow tests. Threads, nozzle caps, operating nuts and color shall conform to requirements of the local jurisdiction. Units shall be traffic type with breakable safety clips, or flange, and stem, with safety coupling located below barrel break line to preclude valve opening. Hydrants shall be dry top, low profile design with a maximum height of 30 inches. Outlet nozzles shall be on the same plane, with minimum distance of 18 inches from center of nozzles to ground line. Valve shall be compression type with 5-1/2 inches minimum opening and shoe inlet connection to be 6 inch minimum.

2.4	ACCESSORIES

A.	Anchorages: Provide anchorages for tees, wyes, crosses, plugs, caps, bends, valves, and hydrants. After installation, apply full coat of asphalt or other acceptable corrosion-retarding material to surfaces of ferrous anchorages.

1.	Clamps, Straps, and Washers: Steel, ASTM A 506.

2.	Rods: Steel, ASTM A 575.

3.	Rod Couplings: Malleable-iron, ASTM A 197.

4.	Bolts: Steel, ASTM A 307.

5.	Cast Iron Washers: ASTM A 126.

6.	Thrust Blocks: As Indicated on Drawings.

B.	Valve Pits: Provide valve pits as indicated, constructed of poured-in-place or precast concrete. Construct of dimensions indicated with manhole access, ladder, and drain. Provide sleeves for pipe entry and exit; provide waterproof sleeve seals. If valve pit not below water table, provide open bottom filled with 3/4 gravel.

PART 3 - EXECUTION

3.1	INSTALLATION OF IDENTIFICATION

A.	General: During back-filling/top-soiling of underground fire water piping systems, install continuous underground-type plastic line marker, located directly over buried line at 24 inches below finished grade.

3.2	INSTALLATION OF PIPE AND PIPE FITTINGS

A.	Ductile-Iron Pipe: Install in accordance with AWWA C600 "Standard for Installation of Ductile-Iron Water Mains and Their Appurtenances."

B.	Polyvinyl Chloride Pipe: Install in accordance with manufacturers's installation instructions.

C.	Steel Pipe: Install in accordance with AWWA M11 "Steel Pipe-Design and Installation."

D.	Depth of Cover: Provide minimum 36 inches depth of cover over underground piping in accordance with NFPA 24, Figure A-8-11 "Recommended Depth of Cover Above Top of Underground Yard Mains."

3.3	INSTALLATION OF VALVES

A.	General: Install valves as indicated. Provide post indicator for control valves.

B.	Control Valves: Install post indicator valve at each connection into building, locate 40 ft. from building's outside wall, or as indicated.

C.	Shutoff Valves: Install shutoff valve ahead of each hydrant.

3.4	INSTALLATION OF HYDRANTS

A.	General: Install fire hydrants in accordance with AWWA M17 "Installation, Operation, and Maintenance of Fire Hydrants."

B.	Location: Install fire hydrants minimum of 40 feet-0 inches from building's outside wall, or as indicated.

3.5	FIELD QUALITY CONTROL

A.	Piping Tests: Conduct piping tests before joints are covered, and after thrust blocks have sufficiently hardened. Fill pipeline 24-hrs prior to testing, and apply test pressure to stabilize system. Use only potable water.

B.	Hydrostatic Tests: Test at not less than 200 psi for 2 hours.

1.	This test shall be performed by the Contractor with his labor and equipment in the presence of the Engineer. No testing will proceed until all thrust blocks are cured or restraining devices installed. Cleam and flush all piping thoroughly prior to testing. During filling of water all air will be carefully permitted to escape through release cocks installed as required.

L = (N) (D) (P)1/2 = allowable leakage in gallons

3700	per 2 hour test.

L = 0.00331 ND; for 150 psi test for 2 hours.

N = Number of joints in the section tested.

D = Nominal pipe diameter in inches.

P = Average test pressure maintained during the leakage test psig (gauge).

2.	During the two (2) hour period of the test, the Contractor shall maintain a continuous pressure of 200 psi, by means of a pump taking supply from a container suitable for the measurement of water loss. Should the test fail, the leak will be located and repaired and the test performed again until it meets the above specified limits.

3.	Inspection of Work: All work is subject to inspection by the Water Purveyor, Owner and Engineer. The following phases of construction shall be inspected by the Owner and Engineer:

a.	Placing of pipe, fittings and appurtenances.Hydrostatic Test.

3.6	ADJUSTING AND CLEANING

A.	Flushing: Flush underground mains and lead-in connections to sprinkler risers before connection is made to sprinklers, standpipes, or other fire protection system piping.

1.	Flush at flow rate not less than that indicated in NFPA 24, or at hydraulically calculated water demand rate of the system, whichever is greater.

END OF SECTION