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- <br /> 'i�au:as.-+t�z�fwro.Ya-�:..7:�.ew.-.�a. <br /> s <br /> X <br /> i <br /> SELECTING A WATER SOURCE � <br /> .r, <br /> Table 1-4 Rates of flow for certain plumbing,household,and farm fixtures <br /> Flow Pressure" Flow Rate <br /> Location psi(kPa) gpm(L/min) ILI. <br /> Ordinary basin faucet 8 (55) 2.0 (7.5) t <br /> Self-closing basin faucet g .. <br /> Sink faucet,31e in.(10 mm) 8 ( <br /> 55) 4.5 (17.0) <br /> Sink faucet,1/2 in.(13 mm) 8 (55) 4.5 (17.0) <br /> Bathtub faucet 8 (55) 6.0 (23.0) <br /> Laundry tub faucet,1/2 in.(13 mm) 8 (55) 5.0 (19.0) <br /> Faucets per 1992 Energy Policy Act — — :!2.5 <br /> Shower 8 <br /> (55) 5.0 (19.0) <br /> Showers per 1992 Energy Policy Act — <2.5 tU <br /> Ball-cock for toilet 8 (55) 3.0 <br /> (11.0) <br /> Flush valve for toilet 15 (103) 15.0-40.0 (57.0-151.0)t <br /> Toilets gal or L per flush per 1992 Energy Policy Act — — 51.6 (56.1) <br /> Flushometer valve for urinal 15 <br /> (103) 15.0 (57.0) <br /> Garden hose,50 ft(15 m)('/4-in.113-mml sill cock) 30 (207) 5.0 (19.0) 1 <br /> Garden hose,50 ft(15 m)(1/s-in.[16-mml outlet) 15 (103) 333 <br /> (13.0) <br /> Drinking fountain 15 (103) 0.75 (3.0) . <br /> Fire hose,l''/z in.(6 mm)(1/2-in.[13-mml nozzle) 30 (207) 40.0 <br /> (151.0) <br /> "Flow pressure is the pressure in the supply near the faucet or water outlet while the faucet or water outlet is wide <br /> open and flowing.Flow pressure is measured in pounds per square inch(WoPascals). <br /> tide range due to variation in design and type of toilet flush valves. _ . <br /> Table 1-4 summarizes the rates of flow that might be <br /> expected for certain household and farm fixtures. For a very <br /> small system, serving fewer than 30 homes, the maximum flows <br /> rate the system should be capable of supplying may be calculat- <br /> ed by adding together the peak flow rates of all fixtures on the l <br /> system and multiplying the result by 80 percent. For larger sys- <br /> tems, the engineering firm designing the system calculates peak <br /> flow rate requirements using principles that reflect past experi- <br /> ence with systems of similar size.When possible, water systems <br /> serving more than 30 homes should have a minimum peak-flow <br /> capacity of 120 al 450 L ( gp ( )) <br /> p ty g ( ) per hour 2 m 0.1 L/s for each <br /> single-family residence,plus any additional capacity needed to <br /> account for lawn watering or fire protection, or both. Small ;`, <br /> domestic service pumping applications should have at least two ti <br /> pumps, each capable of providing a minimum of 50 percent .t; <br /> of the projected peak demand. Larger systems with multiple <br /> 31 - <br />