Required Underdrain Lateral Spacing Calculator

Calculate the required spacing for underdrain laterals using:
\( S = \frac{A}{L} \)

* Enter the drainage area to be served \(A\) (ft²) and the lateral length \(L\) (ft).

Step 1: Enter Parameters

Drainage Area, \(A\) (ft²):

Example: 5000 ft²

Lateral Length, \(L\) (ft):

Example: 100 ft

This calculator lets you enter the drainage area AAA and the underdrain lateral length LLL to compute the required lateral spacing SSS.

Calculated Lateral Spacing