Does anyone know what is the minimum height above the permanent pool in a wet pond that a pvc liner should be installed at?
I was thinking of specifying 1 ft. Any suggestions?
Can detention of 2.8" of rain be detained on top of a warehouse roof without adding any additional cost?
We are trying to obtain city approval for development but there isn't a structural engineer on the team yet.
As part of standard structural calculations, the typical rain/snow loads (40psf...
