Calculating Friction Loss (cont.)
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•Horizontal Run (60’ X friction loss 6.88 per 100’)/100 = 4.13’ or 5’
•Drop pipe length (180’ X friction loss 6.88 per 100’)/100 = 12.38’ or 13’
•1”Fittings equivalent length in feet (29’ X friction loss 6.88 per 100’)/100 = 2’
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•Total Friction Loss = 20’
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• Note: Always round up fractions of feet when calculating friction loss.