In the water supply system shown in Fig. 5.32, water flows by gravity from reservoir A to points C and D as well as to reservoir E. The elevations of known points are as follows: Water level A =...

In the water supply system shown in Fig. 5.32, water flows by gravity from reservoir A to points C and D as well as to reservoir E. The elevations of known points are as follows: Water level A = 650.00 m. Elevation B = 590.00 m. Elevation C = 550.00 m. Elevation D = 570.00 m.

The measured residual pressures are as follows:

Point B = 300 kPa.

Point C = 500 kPa.

The known flows are as follows:

Pipe BD = 30 L∕s.

Pipe BE = 75 L∕s.

C for all pipes = 100.

(a) Calculate the flow in line BC.

(b) Find the residual pressure at point D.

(c) Compute the maximum water level in reservoir E.

(d) Determine the required diameter for pipe AB.