Water distribution Level 3 Exam Questions
And Answers 100% Pass
A factor or value used to indicate the smoothness of the interior of a pipe - ANS Cfactor
Major parts of water distribution - ANS Pipes, storage facilities, pumping stations, valves ,fire
hydrants, meters, and other appurtenances
Main purpose of water storage facilities - ANS To provide sufficient amount of water to
average or equalize the daily demands on the water supply system
Types of storage facilities - ANS Clear wells, elevated tanks,standpipes,ground level storage
tanks , hydro pneumatic or pressure tanks, and surge tanks
20 psi - ANS Absolute minimum pressure
35 psi - ANS Minimum working pressure
Basic requirements of pipes - ANS Adequate strength, durability,maximum corrosion,
resistance and no adverse effect on water quality
Four classes of working pressure are commonly encountered - ANS 100,150,200,250 psi
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Push on and mechanical joints are most often used for - ANS Ductile iron pipe. Flanges,
restrained, flexible, and sleeve joints are also used
Flange joints - ANS Not flexible
Restrained joints - ANS Prevent movement
Flexible joints - ANS Permits one joint to move
PE pipe - ANS Has the highest cfactors 150
Pipe protection - ANS Paint
Rock must be excavated - ANS 6inches
Ladder must b located - ANS 25 ft and 3ft above hole
Laying pipe is also called - ANS Stringing
The horizontal shoring members are generally referred to as - ANS Stringers or walers
Shield shoring - ANS Consists of a rectangular box that must b open on the top and bottom
and usually the ends are open too
Solid sheeting - ANS Used when materials will not stand in a vertical position or not practical
to slope the trench