Using the Hazen-Williams formula, determine the friction loss in 150 ft (45.

Using the Hazen-Williams formula, the friction loss in 150 feet of 1-inch black steel schedule 40 pipe flowing 30 gpm in a wet system would be approximately 27.5 psi. This calculation considers the pipe's material, size, length, and flow rate.

References: The Hazen-Williams formula is commonly used in fire protection engineering to estimate friction loss in water pipes based on material, diameter, flow rate, and length.