By NORMA Group

By NORMA Group

Rational Method

Q=CiA

Q=Runoff Flow Rate
C=Runoff Coefficient
i=Rainfall Intensity
A=Area 

 

Gravel Specifications

Gravel depth beneath Flo-Well (Dimension A) in feet.
Gravel thickness around Flo-Well (Dimension B) in feet.

Illustration of gravel needed around and below an NDS Flo-Well Dry Well