=+10-2.

head in a vertical riser from the pump to an equipment room on the twenty-fifth floor is 30 ft

(9 m) of water, and the pump produces 250 ft (76 m) of head. What is the pressure on the suc-

tion side of the pump for a pressure of 8 psig (55 kPa gage) to exist in the riser on the twenty-

fifth floor? Assume 12 ft (3.7 m) of elevation per floor.

For the building of Problem 10-2 it is required that the domestic service water pressure be the