Retaining walls are a beautiful landscaping feature, but their main purpose lies in transforming installing a drainage system.
Do I Need Drainage Behind Retaining Wall. A retaining wall is built to hold back a certain amount of soil. For short retaining walls you can often do a dry stack gravity retaining wall rather than a cast concrete or cmu block cantilevered wall.
How low can you go? - PlaceMakers from underconstruction.placemakers.co.nz
I am wondering about drainage: Timber, interlocking blocks, stacked stone, brick or block, and concrete. A retaining wall is normally needed when a slope has lost its natural integrity or is composed of inherently unstable materials such as gravel or sand.
Cover to 50mm deep with blue metal aggregate, add filter or drainage fabric, then backfill behind the wall with soil.
It is important to consider retaining wall drainage in the process of building your wall. I have the foundation of two homes (very close to each other). Do i need to drain it at the upper level or should i build something that is dug in and drain it at the base level (the grass level in the picture). Drainage was planned either way.
