An industrial complex utilizes water at a uniform rate of 5,400 gpm (20,439 L/min) during its working hours from 8 a.m. to noon and from 4 p.m. to 8 p.m. This water demand is withdrawn from an...

An industrial complex utilizes water at a uniform rate of 5,400 gpm (20,439 L/min) during its working hours from 8 a.m. to noon and from 4 p.m. to 8 p.m. This water demand is withdrawn from an elevated water tank located at an elevation of 40 ft (12.19 m) above ground level. Water is pumped at a uniform rate continuously throughout the day to the tank using two pumps connected in series from a well whose water level is 460 ft (104.21 m) below ground level. The water pipe from the well to the tank is 3,000 ft (914.4 m) long when C = 100. Each pump has the following characteristics:

(a) Calculate the water tank volume required to equalize supply and demand.

(b) Determine the size of the pipe delivering water from the well to the water tank.