You are working for United Developers, Inc. (UDI). UDI just acquired a tract of land at the dead-end of Sunny Rd. which connects to Lamar Rd., a main road. The length of Sunny Rd is 650 ft. There is a 12-in water main along Lamar Rd. An existing 6-in water main connects the 12-in water main to a fire hydrant located 250 ft from the dead-end of Sunny Rd. The length of the 6-in water main section is 400 ft; a section of 4-in water line runs from the fire hydrant to the dead-end. The UDI vice-president wants to build a duplex on the newly acquired tract of land. Here comes the problem: According to the previous owner of the tract of land, the fire flow test data on the fire hydrant shows that the fire hydrant delivers an adequate fire flow of 1000 gpm at a pressure of 24.60 psi during summer peak hour. The town ordinance requires that a fire flow of 1500 gpm at 20 psi minimum must be provided if UDI wants to build a duplex on the tract of land. With a flow of 1500 gpm at the fire hydrant, the pressure is dropping below 20 psi; therefore UDI vice-president wants you to calculate the length of 6-in pipe (the section connected to 12-in pipe on Lamar Rd) which must be replaced with 8-in pipe so that fire flow will be adequate; given C=100, pipe contraction coefficient minor loss: K=0.5, no change in elevation along the route.
The length (in feet) of 8-in pipe to replace the existing 6-in pipe is most nearly:
A/ 216
B/ 230
C/ 242
D/ 253
PE_question_pipe_in_series_find_L_2_.pdf
The length (in feet) of 8-in pipe to replace the existing 6-in pipe is most nearly:
A/ 216
B/ 230
C/ 242
D/ 253
PE_question_pipe_in_series_find_L_2_.pdf