Also know, how do you protect retaining walls?
Following are the methods to prevent failure and distress in retaining walls:
- Redeem surface drainage problems.
- Reduce retaining wall height.
- Use tie backs.
- Extend the footing.
- Remove and replace backfill materials.
- Reinforce the front of the wall.
- Add a key.
- Use cantilevered soldier beams.
Beside above, should I put plastic behind retaining wall? I always run the thicker black plastic behind retaining walls. Preserves the timber sleepers a bit more and stops dirt and weeds coming through the inevitable gaps. +1 for geotex on the ground and up the soil you want to retain, then aggregate between fabric and wall, with drain at the bottom. No plastic for me.
Likewise, people ask, how does terracing prevent erosion?
Terraces prevent erosion by shortening the long slope into a series of shorter, more level steps. This allows heavy rains to soak into the soil rather than run off and cause erosion.
Do I need drainage behind retaining wall?
Third, since most retaining walls are impervious, which means water cannot pass through the wall itself, efficient drainage is crucial. When drainage goes unaddressed hydrostatic pressure will build up behind the wall and cause damage such as bulging or cracking.