Water Distribution System

Water distribution system of any city consists of pipes, valves, hydrants, meters, pumps and service reservoirs.
Pipes are further divided into mains, sub mains, branches and laterals.
Valves are used for controlling flow.
Hydrants are used for releasing water during fire breakouts.
Meters are used for measuring discharges.
Pumps are used for lifting water.
Service reservoirs are used to store treated water and mentening pressures.
Pressure required for single storey, two storey and three storey buildings are 7m, 12m and 17m respectively. Fire hydrant pressure should be maintained more than 1kg/sq.cm.

Size of pipe used is generally 10cm.

Distribution system involves 40 to 70% of the total cost of water supply scheme.
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