Node 14 in Problem 4.32 is changed to a fixed-grade node with a WSEL of 76.2 m (250 ft). A...

Node 14 in Problem 4.32 is changed to a fixed-grade node with a WSEL of 76.2 m (250 ft). A valve (from Example 4.22) is placed at the downstream end of line 23 and is closed using the following scheme

Use a wall thickness of 5.1 mm (0.20 in.) for all pipes. Compute the maxim, sure at nodes 9,13,14, and 15.

Problem 4.32

The pipe network system in Problem 4.31 was expanded to a 24-pipe system shown below. The water levels in the two elevated storage tanks are 96.0 m (315 ft) and the water levels in the two ground-level storage tanks are the same 47.3 m (155.0 ft). The pump characteristics for the new pump in line 17 are the same as the existing pump in line 9 Compute the flow in each line and the pressure at each junction node.

Problem 4.31

The pipe network system in  problem  4.30 was expanded to a 14-pipe system  and includes a ground-level storage tank located near junction node 4. A pump is installed in a 457-mm (18-in) diamenter pipe extending 152m (500 ft) from the ground-level orage tank [WSEL = 47.3 m (155 ft)] to junction node 4. Three points on the pump characteristic curve are listed below. Compute the flow in each line and the pressure at each junction node.

Problem  4.30

Compute the discharge in each pipe and the pressure at each junction node for the 8-pipe system show below. The water surface elevated storage tank is 96.0m (315.0 ft).