Calculate the design flow, Q from source to the first junction $($cubic meters$)$ for the given water distribution system. All pipe

segments are $400$ meters long and $750mm$ in diameter with $C=130.$ The pressure head on each pipe is $5\mathrm{.}5$ meters. The source of

water is a lake at elevation $15m.$

The two pumps will supply water at community A and community $B.$ Community $A$ is at elevation $35$ meters while community $B$ is at

clevation $80m.$

The design flow for exch community should be calculated using Arithmetic Method at year $2040.$ Listed below are the population

data for each community.