NFPA Water-Based Systems Professional CWBSP Question # 25 Topic 3 Discussion
CWBSP Exam Topic 3 Question 25 Discussion:
Question #: 25
Topic #: 3
How much pressure is lost to friction as 1,200 gpm (4542 L/min) travels through 200 ft (61 m) of 5 in. (130 mm) schedule 40 steel pipe with a C-factor of 120?
The pressure loss due to friction for 1,200 gpm traveling through 200 ft of 5 in. schedule 40 steel pipe with a C-factor of 120 is approximately 21 psi (1.45 bar). This calculation takes into account the flow rate, pipe length, diameter, and roughness factor.
References: Friction loss calculations in fire protection engineering are based on formulas such as the Hazen-Williams equation, which takes into account the flow rate, pipe material (C-factor), diameter, and length.
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