kmmgeotech
Geotechnical
I am asked to review a stormwater infiltration system which will be within 20 ft of a 10 ft retaining wall. The concern is potential water mounding behind the wall. I believe somewhere in the past, I saw a Table showing approximate drawdown curves for varying permeability soils without getting involved with a detailed analysis. In the past, I have used a 3H:1V downward slope for such conditions in silty sand soils.
