What Size Gravel For Retaining Wall Base

Fill the trench with a 2 to 3 inch layer of paver base.

What size gravel for retaining wall base.

High and weigh 50 to 75 lbs. Dig a base trench 24 in. Long x 6 to 8 in. Retaining wall base trench.

Similar to gravel paver base is a form of construction aggregate that contains crushed rocks such as limestone. Crushed stone 67 sizes from 3 4 down to fine particles. 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. Kevin 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.

25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed. For fill road and slab base. A level base on which the wall sits. Gravel known as size 1 is relatively large.

They re 16 to 18 in. Tall go with full size blocks. The wall gets its strength from a sturdy base consisting of gravel. For heavy duty walls up to 30 ft.

Typically this gravel ranges in diameter from 2 5 inches 6 35 centimeters to 4 inches 10 16 centimeters. A retaining wall must have the strength to hold back the weight of the soil plants and sometimes small structures behind it. More information on retaining walls where the base trench steps up a slope. The largest of the crushed stone grades.

Choose a paver base with landscape rocks between 1 2 inch and 3 4 inch in size. 150 mm plus an additional 1 in. The base material should only consist of angular sharp edged particles such as minus gravel. You ll typically find them at landscape supply yards.

This prevents water from building up behind the wall. This is standard for all types of landscape walls. It can be difficult to work with as it generally cannot be shoveled and instead must be moved individually stone by stone. Due to soil erosion your retaining wall should be built on a solid foundation made from paver base.

The various sized crushed gravel with the fines helps ensures for appropriate compaction. The leading cause of wall failure. 600 mm wide the length of the wall the depth of the trench will be 6 in.