DESIGN COEFFICIENT TABLES - CECALC.com
residential, apartments, condominiums 0.5-0.7 industrial, light 0.5-0.8 industrial, heavy 0.6-0.9 Modified Rational Method, Typical Values of Infiltration Rates, (F), inches/hour Description Soil group symbol Infiltration, F, in/hr Sand and gravel mixture GW, GP, SW, SP 0.8-1.0 Silty gravels and silty sands to inorganic silt, and well-
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