Retaining Wall Base Gravel

Round rocks such as pea gravel rolls and dislodge under pressure resulting in failure of the retaining wall.

Retaining wall base gravel.

Retaining wall base trench. Lay a 4 6 inch layer of the crushed base material in the trench. Below is an overview of the different types of walls and these common components. All retaining walls share some common building components in their construction.

A retaining wall must have the strength to hold back the weight of the soil plants and sometimes small structures behind it. A handheld tamping tool can really help in getting the gravel level but you re right one stray stone can throw off the entire operation. Crucial for supporting the rest of the wall a good base is made of compacted soil and at least a six inch layer of compacted sand and gravel. A level base on which the wall sits.

The wall gets its strength from a sturdy base consisting of gravel. Next compact it and level it using either a hand or mechanical compactor. Dig a base trench 24 in. Choose a paver base with landscape rocks between 1 2 inch and 3 4 inch in size.

The base of a retaining wall should be set below ground level. 25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed. The taller a wall is the further below ground level it should be set. Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks.

Also called drain tile at the base of the wall. Similar to gravel paver base is a form of construction aggregate that contains crushed rocks such as limestone. 150 mm plus an additional 1 in. To keep the blocks on your retaining wall level and structurally sound you need a base layer of several inches of well compacted sharp gravel.

More information on retaining walls where the base trench steps up a slope. Due to soil erosion your retaining wall should be built on a solid foundation made from paver base. This is standard for all.