Agenda - Council - 06/27/2017 - Laserfiche WebLink

Home

A3 Polyethylene (PE) Pressure Pipe and Fittings Polyethylene pressure pipe and fittings shall be manufactured with compounds conforming to ASTM D3350 and shall conform to ASTM D3035 and AVWVA C-901(for 0.5" to 3" diameters) and ASTM F714 and AVWVA C906 (for 4" to 65" diameters) for the size, grade and pressure class indicated on the plans, specifications and special provisions. Polyethylene pipe and fittings shall be PE 3608 or PE 4710 for potable water transmission and pressure rating of one hundred sixty (160) psi or greater, unless otherwise provided in the special provisions. The pipe and fittings shall be manufactured from the same resin type, grade, and cell classification. Unless otherwise specified, the dimensions and tolerances of the pipe barrel should conform to Ductile Iron pipe equivalent outside diameters for pipe diameters greater than three inches (3"). The method of joining material shall be by the Thermal Butt- Fusion Method in accordance with ASTM 3261. The minimum "quick -burst" strength of the fittings shall not be less than that of the pipe with which the fitting is to be used. B Fire Hydrants Fire hydrants shall be of the type, size, and construction specified in the Plans and shall conform to the applicable requirements of AV VVA C-502. Unless otherwise specified in the Plans, Specifications, and Special Provisions, hydrants shall be furnished in conformance with the following supplementary requirements: (1) Hydrants shall have a five inch (5") (nominal diameter) main valve opening of the type that opens against water pressure. (2) Hydrant barrels shall be two (2) piece, non -jacket type, with flanged joint above finished grade line and with mechanical joint connection at the hub end for joining a six inch (6") ductile iron branch pipe. (3) Hydrant operating rod shall be equipped with a breakable joint coinciding with the flange joint above the grade line. (4) Hydrant bury length shall be measured from the bottom of the branch pipe connection to the finished ground line at the hydrant. (5) Hydrants shall have two (2) outlet nozzles for two and one half inch (2-1/2") (I.D.) hose connection and one outlet nozzle for four inch (4") (I.D.) steamer connection. All outlet nozzle threads shall be National Standard Fire -Hose Coupling Screw Threads (NFPA 1963). (6) Hydrant operating mechanisms shall be provided with "0' ring seals preventing entrance of moisture and shall be lubricated through an opening in the operating nut or bonnet. (7) Hydrants shall be provided with outlets for drainage in the base or barrel, or between the base and barrel, unless the Special Provisions require that drain outlets be omitted or plugged. Page 23