Plumbing Calculation
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Typical flow rates for various types of outlets / fixtures Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Description Sink Washbasin Common wash basin Bidet Bath Shower Stand pipe Toilet with cystern Toilet withflushing tap Urinal with automatic cystern, per position Common urinal with flushing tap Washing machine Dish washer 20mm watering outlet
Non simultaneous use Flow rate Liters/min. 12 6 3 6 30 15 10 6 90 6 30 12 6 40
No. of fixtures 1 2 3 4 5 6-8 9 - 13 14 - 18 19 - 25 26 - 36 37 - 45 46 - 55
K Factor 1 1 0.7 0.6 0.5 0.42 0.32 0.26 0.22 0.18 0.16 0.14
Note To calculate the approximate minimum water required in L/min. determine the flow rate for all fixtures in the building then correct the non simultaneous use by multiplying by the appropriate K factor for the total number of fixtures in the building.
ng the
Description Sink Washbasin Common wash basin Bidet Bath Shower Stand pipe Toilet with cystern Toilet withflushing tap Urinal with automatic cystern, per position Common urinal with flushing tap Washing machine Dish washer 20mm watering outlet
Non simultaneous use Flow rate Liters/min. 12 6 3 6 30 15 10 6 90 6 30 12 6 40
No. of fixtures 1 2 3 4 5 6-8 9 - 13 14 - 18 19 - 25 26 - 36 37 - 45 46 - 55
K Factor 1 1 0.7 0.6 0.5 0.42 0.32 0.26 0.22 0.18 0.16 0.14
Note To calculate the approximate minimum water required in L/min. determine the flow rate for all fixtures in the building then correct the non simultaneous use by multiplying by the appropriate K factor for the total number of fixtures in the building.
ng the
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