06-J Cox Field Water Main - Laserfiche WebLink

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2010.04 Well fitted stoppers or ]ine when construction is stopped tempo of the Contractor to deliver to the City 2010.05 :heads shall be securely placed in all openings and in the end of the rily and at the end of each day's work. It shall be the responsibility pipeline that is clean throughout its entire ]ength. 2000 psi concrete shall placed for blocking at each change in d'uection in the pipeline, in such manner as will brace the pipe agai st undisturbed trench walls. Concrete blocking, made from Type I cement, shall have been in place four (4 days prior to testing the pipeline as hereinaf[er specified. Test may be made in two (2) days after completi n of blocking if Type III cement is used. At all points where we connections aze made to existing lines, the existing lines shall be adequately blocked and the tapping co nection fittings shall be supported by blocking up to the spring line with 2000 psi concrete. Concrete blocking will ot be measured or paid for as a sepazate item but the cost thereof shall be included in the various items lited in the Proposal and Bid Schedule. 2010.06 The Contractor shall make the alternations and [he necessary connections to existing city water mains as shown on the plans. S h connections shall be made at such tune and in a manner approved by the City Water Department; in each case, when the work is started, it shall be prosecuted expeditiously and continuously until completed. Where it is necessary o indicated in the plans, connections to existing mains under pressure shall be made with tapping connection ttings. Where it is possible to valve off the section of existing main where the connection is to be made, t e Contractor may have the option of either connecting by means of tapping connection fittings or by cutti g the main and using standard fittings. Tapping sleeves, cross s and valves shall be of standard manufacture and mechanical joint type to fit AW WA pipe specification in lasses A, B, C and D. Tapping sleeves and crosses shall be designed for minimum working pressure of 15 pounds per square inch. Connecting flanges on tapping sleeves, crosses and valves shall be ASA Class 25. Tapping valves shall be designed for minimum working pressure of 175 pounds per square inch. 2010.07 After the pipe has beeo laid for at least seven (7) days, pressure pipelines shall be tested in such sections approved by the City. The Contractor shall furnish all labor, materials, tools and equipment required to bullchead and seal off the line for testing, fil] it with water, raise the filled line to test pressure and measure both pressure and leakage oviier the test period. Item 2010-2