Let the concrete cure for at least a week before backfilling 28 days is best.
Best backfill material for retaining wall uk.
Why proper drainage is important for retaining wall performance.
Compacted native soil can be used to backfill the rest of the space.
A retaining wall is built to hold back a certain amount of soil.
However some stones work better than others.
Stone is a great choice for backfill because it s durable and offers great drainage.
Backfill refers to the dirt behind the wall.
Retaining walls can range from simple raised garden beds to large walls several metres in height built to control erosion redirect water and prevent landslips.
Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks.
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.
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.
The design of a properly built retaining wall resists the force of the soil behind it and prevents caving buckling or leaning.
Do choose a material you can easily work with.
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.
However retaining walls are built with a certain capacity in mind.
This video shows how a retaining wall should be back filled to allow for maximum drainage.
The use of commercial by products such as furnace slag or fly ash as backfill material may be advantageous where such products are locally available and where suitable natural materials cannot be found.
Fly ash has been used as a lightweight backfill behind a 25 foot high wall and as an additive to highly plastic clay.
Second a retaining wall must have properly compacted backfill.
Whatever the material backfilling a basement foundation puts a momentary stress on the walls.