06-J Cox Field Water Main - Laserfiche WebLink

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2010.01 The work to be perfo ed under this section of the specifications shall consist of furnishing and installing polyvinyl chloride pipe. I 2010.02 MATERIALS Polyvinyl chloride pip , unless otherwise specifically shown on the plans, or approved in writing, shall be Class 150 psi with a imension ratio of 18 (DR 18) for sizes 10-inches and greater and shall be C1ass 200 psi with a d'unension ra io of 14 (DR 14) for sizes 8-inches and smaller. PVC pipe shall be extruded polyvinyl chloride pipe of bber gasket type, and shall be furnished in 20-foot nominal laying lengths. All such pipe shall beaz a m k denoting approval by the Underwriter's Laboratories of Chicago, Illinois, so that it will be acceptable t the Texas State Fire Insurance Commission for use in fire protection lines without penalty. Pipe shall be nianufactured in accordance with American Water Works Association Specification C900-89, or latest ed tions thereof. Pipe larger than 12-inch may be manufactured in accordance with AWWA C905-88 w th a dimension ratio of 18 (DR 18), which is pressure rated at 235 psi. All joints shall be of the type which rovides a recession in the bell for the employment of a single rubber gasket to be placed before the inserti n of the succeeding spigot. Each size of polyvinyl cliloride pipe shall have the same outside diameter as th conesponding size of cast iron pipe. 2010.03 LAYING POLYVI YL CHLUKiuh rirh Unless otherwise spec ied on the plans, or shown on the profiles, polyvinyl chloride pipe shall v be installed to clear all utility lines a d shall have the following minimum cover below the lowest propert line grade of the street: i and 10-inch pipe 5.0' cover pipe and smaller 4.0' cover The specified embed ent shall be accurately shaped and trimmed to receive the pipe barrel and each pipe section, when in place shall have a uniform bearing on the subgrade for the full length of the pipe bazrel. Pipe shall not be laid nless the subgrade is free of water and in a satisfactory condition. Adjustments of [he pipe to line and ade shall be made by scraping away or filling in with granular material, and not by wedging or blocking up e bell. The interior of the pi e shall be clean and joint surfaces shall be clean and dry when [he pipe is lowered into the trench. Each pi , fitting and valve shall be ]owered into the trench cazefully and laid true to line and grade. Polyvinyl chloride pipe shall be installed as shown on the plans with ductile iron fittings. Fittings shall be as specified in Standard Specification Item 2012 - Ductile Iron Water Pipe Fittings. Item 2010-1