A fire flow test was conducted within the distribution system using three hydrants with 2-in. nozzles, as shown in Figure 8-2b. The pitot tube pressure at all hydrants was 12 psi, while the pressure drop at hydrant R went from 50 to 43 psi. Compute the discharge at 20 psi Is the discharge adequate to fight a residential fire with 1500 gpm?
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