§ A182-2. Water pipe and fittings.
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All pipe shall conform to the sizes shown on the drawings
and shall be ductile iron pipe or other materials, subject to Engineer's approval.Editor's Note: The drawings are included at the end of this chapter.A.Ductile iron pipe. Ductile iron pipe shall be Class 52 and shall conform to ANSI Standard A21.51 (AWWA C-151). Each pipe shall be tested at a hydrostatic pressure of not less than 500 pounds per square inch as detailed in ANSI Standard A 21.51. Cement linings shall be in accordance with ANSI A21.4 (AWWA C-104). Joints employing a single elongated grooved gasket to effect the joint seal, such as United States Pipe and Foundry "Tyton" type or approved equal, will be acceptable. Bituminous coating inside and outside of pipe shall conform to ANSI A21.8 (AWWA C-108).
B.Cast-iron fittings. Cast-iron fittings shall conform to the ANSI Specifications 21.10 or AWWA Standard C-110. The fittings shall be cement lined in accordance with ANSI Specification A21.4 (AWWA C-104). Joints shall be mechanical joints unless specified otherwise and shall conform to the applicable requirements of ANSI A21.11 (AWWA C-111).
C.Gate valves and valve boxes. All gate valves shall meet the requirements of AWWA Standards C-509. They shall be iron body, bronze mounted, resilient seat, wedge disc, mechanical joint gate valves with nonrising stems, Oring type packing and standard two-inch operating nuts. All gates shall open to the left, shall be of Mueller or approved equal, proportioned for working pressures of 200 pounds per square inch (psi) hydrostatically tested at 400 pounds per square inch shell. Each valve shall be provided with a cast-iron telescoping valve box and cover installed by the contractor. The contractor shall provide anchor blocks and/or clamps as directed by the Engineer for the gate valves. The valve boxes shall be five-and-one-fourth-inch diameter, two- or three-piece, sliding type, Mueller figure H10364, or approved equal. The valve boxes shall be adequate for the trench depth so that when set on the valve, the cover is level with the pavement or the completed surrounding ground, whichever is applicable. The valve box cover shall have the word "WATER" cast in top.
D.Tapping sleeves and valves. Tapping sleeves shall be Mueller H-615 or approved equal and tapping valves shall be Mueller H-667 or approved equal. Joints shall be mechanical joint.
E.Hydrants.
(1)All hydrants shall conform to AWWA Specification C-502 with a working pressure of 150 pounds per square inch and shall be of a break-flange traffic construction type Mueller Centurion. The hydrant shall have the operating nut pentagon shaped, measuring 1 1/2 inches from the point to flat, opening counterclockwise. Two two-and-one-half-inch hose and one four-and-one-half-inch pumper nozzle shall have the National Standard threads and shall be covered with nut-type caps and chains. Size of nuts shall be the same as the operating nut.
(2)The hydrant shall have the bottom valve size at least 5 1/4 inch, with bronze seat ring and shall have a minimum of six-inch inlet opening with mechanical joint connection for a pipe to an auxiliary gate valve. The auxiliary gate valve shall be at least six inches in size with a valve box and cover.
(3)The depth of bury for hydrant shall be five feet unless greater depth is needed due to the ground elevation or the depth of the pipe. Graded gravel shall be placed around the lower part of the hydrant for drainage purposes. The hydrant shall be installed as specified in Section 3.7 of AWWA Standard C-600 and/or as shown in the hydrant details of other applicable specifications. The hydrant shall be painted bright red or other colors as may be specified by the owner. Hydrants shall be UL or FM approved, where required.