If you re building a retaining wall add a french drain behind the first course of stones or blocks.
Install french drain behind retaining wall.
Drainage problems in your yard can lead to pooling mold or water damage in or around your home.
The design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning.
The pipe should rest on the same compacted gravel base or concrete footing that supports the wall.
Pour 1 to 2 inch washed drainage rock into the hole along the base of the wall about 4 to 6 inches deep.
This video shows you how to properly install a drainpipe behind your wall for prop.
Mar 19 2014 when building a retaining wall lay perforated drainage tubing at the base of the wall slightly above ground level so runoff can drain out without undermining your wall.
However retaining walls are built with a certain capacity in mind.
A french drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard.
If you re building a retaining wall on a hillside.
Why proper drainage is important for retaining wall performance.
Compact the bottom of the hole behind the retaining wall to get it flat.
Luckily you can avoid these problems by installing a french drain.