A pumper is supplying multiple hose lines at a structure fire. A portable master stream device equipped with a 750 gpm fog nozzle is being supplied by two 3-inch hose lines with 2 1/2-inch couplings, each 200 feet long. A 300–foot four-inch hose is being used to supply a manifold attached to three attack handlines. Line 1 is 150 feet of 2 1/2-inch hose equipped with a 1 1/4-inch solid stream

nozzle. Line 2 is 150 feet of 1 3/4-inch hose equipped with a 125 gpm fog nozzle; it is being operated on the roof of a 30-foot-high building. Line 3 is 200 feet of 2-inch hose equipped with a 150 gpm fog stream nozzle being operated on the third floor. Determine the pump discharge pressure for this pumper.

What will be an ideal response?

Based on the manifold line; 183 psi