Step 1:

Enter the Square Feet Drained: sf

Step 2:

Choose the Coefficient of Runoff:

Step 3:

Choose the 25 Year Rainfall: (see rainfall map).in/hr

Step 4:

Slope of drain pipe:%

Step 5:

Press the Calculate button for results:

Step 6:

View results:

Liquid Flow
Gallons per Minute (GPM): 0
Cubic Feet of Water per Second (CFS): 0

Drain pipe required
Smooth Wall PVC Pipe Corrugated Pipe
0 0