Water Distribution Level 3 Questions and Answers 100% Correct!

A factor or value used to indicate the smoothness of the interior of a pipe - ANSWER-Cfactor Major parts of water distribution - ANSWER-Pipes, storage facilities, pumping stations, valves ,fire hydrants, meters, and other appurtenances Main purpose of water storage facilities - ANSWER-To provide sufficient amount of water to average or equalize the daily demands on the water supply system Types of storage facilities - ANSWER-Clear wells, elevated tanks,standpipes,ground level storage tanks , hydro pneumatic or pressure tanks, and surge tanks 20 psi - ANSWER-Absolute minimum pressure 35 psi - ANSWER-Minimum working pressure Basic requirements of pipes - ANSWER-Adequate strength, durability,maximum corrosion, resistance and no adverse effect on water quality Four classes of working pressure are commonly encountered - ANSWER-100,150,200,250 psi Push on and mechanical joints are most often used for - ANSWER-Ductile iron pipe. Flanges, restrained, flexible, and sleeve joints are also used Flange joints - ANSWER-Not flexible Restrained joints - ANSWER-Prevent movement Flexible joints - ANSWER-Permits one joint to move PE pipe - ANSWER-Has the highest cfactors 150 Pipe protection - ANSWER-Paint Rock must be excavated - ANSWER-6inches Ladder must b located - ANSWER-25 ft and 3ft above hole