b$.$ Calculate the pressure required at the pump $($assume that the pump is connected to the manifold

and that there is a no elevation difference along the irrigation system$)(2$ pts$)$

c$.$ Do you think the diameters of the manifold and laterals are appropriate? Would you suggest any

changes $(2$ pts$)$

a$.$ Determine the optimal size of the laterals and manifold in the system below if you use a Class $160$

PVC material. The $($simplified$)$ irrigation system consists of $3$ laterals, each having $4$ sprinklers

providing $10gpm$ at $35$ psi $.$ The manifold is $20$ ft long and the laterals are $80ft$ long. $(10$ pts