What Size Gravel For Retaining Wall Base

Choose a paver base with landscape rocks between 1 2 inch and 3 4 inch in size.

What size gravel for retaining wall base.

For heavy duty walls up to 30 ft. The base material should only consist of angular sharp edged particles such as minus gravel. Dig a base trench 24 in. They re 16 to 18 in.

The largest of the crushed stone grades. High and weigh 50 to 75 lbs. It can be difficult to work with as it generally cannot be shoveled and instead must be moved individually stone by stone. Gravel known as size 1 is relatively large.

150 mm plus an additional 1 in. More information on retaining walls where the base trench steps up a slope. The wall gets its strength from a sturdy base consisting of gravel. Similar to gravel paver base is a form of construction aggregate that contains crushed rocks such as limestone.

For fill road and slab base. A retaining wall must have the strength to hold back the weight of the soil plants and sometimes small structures behind it. Crushed stone 1 sizes are from 2 to 4. Long x 6 to 8 in.

You ll typically find them at landscape supply yards. Typically this gravel ranges in diameter from 2 5 inches 6 35 centimeters to 4 inches 10 16 centimeters. Crushed stone 67 sizes from 3 4 down to fine particles. 25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.

Due to soil erosion your retaining wall should be built on a solid foundation made from paver base. 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. Fill the trench with a 2 to 3 inch layer of paver base. The leading cause of wall failure.

Retaining wall base trench. Tall go with full size blocks. This prevents water from building up behind the wall. 600 mm wide the length of the wall the depth of the trench will be 6 in.

Placed behind the retaining wall to promote drainage of water away from the wall. Round rocks such as pea gravel rolls and dislodge under pressure resulting in failure of the retaining wall. This is standard for all types of landscape walls.