NFPA Certified Water-Based Systems Professionals CWBSP Question # 10 Topic 1 Discussion

NFPA Certified Water-Based Systems Professionals CWBSP Question # 10 Topic 1 Discussion

CWBSP Exam Topic 1 Question 10 Discussion:
Question #: 10
Topic #: 1

Using the Hazen-Williams formula, determine the friction loss in 150 ft (45.7 m) of 1 in. (25 mm) black steel schedule

40 pipe, flowing 30 gpm (115 lpm) in a wet system.


A.

27.5 psi (1.89 bar)


B.

41.3 psi (2.93 bar)


C.

52.2 psi (3.6 bar)


D.

57.9 psi (3.99 bar)


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