45+ Drainage For Retaining Wall Background. An unlevel base layer allows areas for water to wash away certain sections more than others, which having an experienced landscape company build your retaining wall will take all the headaches and worries out of your wall. Retaining wall drainage technology has improved over the years.
Soil pressures on a retaining wall increase drastically when the soil is saturated (see soil types for more on soil types and pressures).
Retaining walls are relatively rigid walls used for supporting soil laterally so that it can be retained at different levels on the two sides. Regrading the area can also direct water flow away from. Guidelines for drainage behind and below retaining walls (february 2015). Retaining wall drainage can make a retaining wall incredibly strong or it can reduce the wall to a useless pile of rubble quite easily, so before building or planning a retaining wall, be sure to consider the best methods of retaining wall drainage.