The retaining wall should have few problems holding back the soil but you need to protect your retaining wall against the pressure that can build up if that soil becomes saturated with water.
Installing weeping tile behind retaining wall.
A weeping tile system is a simple drainage system installed around your home next to the exterior side of the footing which is the base of your foundation walls.
The purpose of weeping tile also referred to as drainage tile or drain tile is to provide a drainage point for draining water that has accumulated at the base of the foundation the footing to the storm sewer beneath your street or into a sump pump liner installed beneath your basement floor.
Step 2 pour the gravel.
There will be some gravel below the concrete floor but you ll need to add enough washed.
To do this you will need some type of toe drain for the wall.
Step 2 dig vertical pits approximately 12 inches in diameter and 2 to 4 feet deep with a post hole digger.
With most retaining walls the toe drain will follow the same design as a french drain.
Using a circular saw with concrete blade and chipping hammer.