StormTrooper Sizing Tool

RATIONAL EQUATION -- STORM WATER INTERCEPTOR SIZING TOOL
Drainage Area × Runoff Coefficient × Rainfall Intensity = Flowrate (CFS) or Flowrate (GPM)
(Acres) (In/Hr)

RECTANGULAR SIZE:

CYLINDRICAL SIZE:

City of Houston: Runoff Coefficient C=0.8 & Rain Fall Intensity I=0.27

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