Screenings otherwise known as fa5 or limestone screenings are a great choice for backfill because it compacts well.
Best backfill material for retaining wall.
Compacted native soil can be used to backfill the rest of the space behind the wall.
Backfill refers to the dirt behind the wall.
Gravel backfill backfill simply refers to the soil directly behind the wall.
This is so that when water gets into the space it does not become bogged down in soil but instead can flow down the wall to the drains or weep holes.
It should be coarse well draining material to help keep the basement dry.
For proper drainage the first 12 inches of space behind a retaining wall should be filled with crushed stone or gravel.
Second a retaining wall must have properly compacted backfill.
Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks.
In order to provide proper drainage at least 12 inches of granular backfill gravel or a similar aggregate should be installed directly behind the wall.
When you have built your retaining wall then you will need to add some backfill to the hole in order to shore up the wall and prevent any type of collapse of the underlying structure when you are ready to add your backfill to the hole you should make sure that you have enough suitable material to install in the hole and also take care that you avoid problems such as collapse of the.
Trench back fill tbf 3.