I'm looking for typical flow rates through a french drain with perforated pipe in it. Say 1' x 1' cross section. Does anyone have data or knows where I can get such data?
Also, does anyone know of any alternates to gather flow sub surface?
My customer wants to use a geogrid or geotextile to help with a soft wet silty clay around a underground gas pipe over which his parking lot is being built. There is 200mm of this soil over which 200mm of granular fill with a 50mm asphalt pavement will be placed. I know the calculations for...
