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Hardy Cross Water System Design

$1.$ Calculate the flow in each pipe. The manning's n for the pipe is $0\mathrm{.}022.$ The inflow and outflow for the water system varies according to the student's number. Outflow $4$

$2.$ Calculate the energy grade elevation at each junction and the allowable height of buildings above ground level at each junction. The pump head at the inflow junction $($a$)$ is $200$ feet.