Given a water flow test of a private fire service main, a static pressure reading of...
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Given a water flow test of a private fire service main, a static pressure reading of 85 psi was obtained. Additionally, a residual pressure of 43 psi was obtained when flowing two downstream hydrants. Both of the 2-1/2-inch hydrant outlets on the two hydrants were flowing water during the test. All hydrant outlets measure 2-1/2 inches in diameter and have a round smooth outlet. A pitot reading of 34 psi was obtained from both outlets on hydrant 1 and a pitot reading of 22 psi was obtained from both outlets on hydrant 2. Plot the water supply curve. Is the water supply adequate for a sprinkler system demand of 1400 gpm at 76 psi? Given the water supply information in problem, what flow is available at 20 psi? What residual pressure would be available at a flow of 500 gpm? Use formulas to solve for the required flow and pressures, and confirm your answers by comparing them to a water supply curve. Given a water flow test of a private fire service main, a static pressure reading of 85 psi was obtained. Additionally, a residual pressure of 43 psi was obtained when flowing two downstream hydrants. Both of the 2-1/2-inch hydrant outlets on the two hydrants were flowing water during the test. All hydrant outlets measure 2-1/2 inches in diameter and have a round smooth outlet. A pitot reading of 34 psi was obtained from both outlets on hydrant 1 and a pitot reading of 22 psi was obtained from both outlets on hydrant 2. Plot the water supply curve. Is the water supply adequate for a sprinkler system demand of 1400 gpm at 76 psi? Given the water supply information in problem, what flow is available at 20 psi? What residual pressure would be available at a flow of 500 gpm? Use formulas to solve for the required flow and pressures, and confirm your answers by comparing them to a water supply curve.
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