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APPROXIMATEDISCHARGE FROM PIPESHow to approximate L/s flow from pipe by measuring "X"Full Full Pipe PipeX XPartially Full Full Pipe Piped Ed E X Xdd300mm300mmFormulaeDivide "E" by "d" for factor.Multiply flow for full pipe of "d" diameter(Table 1) by % from Table 2.E - Measure of empty portion of piped - Measure of inside diameter of full pipeFlow = L/sTable 1Pipe DiameterHorizontal 50 70 100 150 200 250 300Distance (X)300 2.6 5.7 9.5 22.2 38.5 60.5 87.0350 3.0 6.6 11.5 25.8 44.9 70.7 101.0400 3.5 7.5 13.0 29.6 51.3 80.8 116.0450 3.9 8.5 14.6 33.3 57.7 90.9 128.0500 4.3 9.5 16.3 36.4 64.2 101.0 145.0550 4.7 10.4 17.9 40.1 70.6 111.0 159.0600 5.2 11.4 19.5 44.5 77.1 121.0 174.0650 5.6 12.3 21.2 48.1 83.4 131.0 188.0700 6.1 13.3 22.8 51.8 89.8 141.0 202.0750 6.4 14.2 24.4 55.5 96.4 151.0 215.0Table 2Flow from partially filled pipes% Factor % Factor10 0.95 50 0.5020 0.88 60 0.3825 0.81 65 0.3830 0.75 70 0.2535 0.69 80 0.1440 0.63 90 0.0545 0.58 100 0.00sykes-pumps.comor call us Free on 0800 211 611INFORMATION...................APPROXIMATEDISCHARGE FROM PIPES182