The base material should only consist of angular sharp edged particles such as minus gravel.
What size gravel for retaining wall base.
For fill road and slab base.
You ll typically find them at landscape supply yards.
Dig a base trench 24 in.
Gravel known as size 1 is relatively large.
For heavy duty walls up to 30 ft.
This is standard for all types of landscape walls.
Retaining wall base trench.
Choose a paver base with landscape rocks between 1 2 inch and 3 4 inch in size.
Long x 6 to 8 in.
Crushed stone 67 sizes from 3 4 down to fine particles.
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.
This prevents water from building up behind the wall.
They re 16 to 18 in.
Due to soil erosion your retaining wall should be built on a solid foundation made from paver base.
Similar to gravel paver base is a form of construction aggregate that contains crushed rocks such as limestone.
More information on retaining walls where the base trench steps up a slope.
The largest of the crushed stone grades.
Placed behind the retaining wall to promote drainage of water away from the wall.
The leading cause of wall failure.
Fill the trench with a 2 to 3 inch layer of paver base.
The various sized crushed gravel with the fines helps ensures for appropriate compaction.
Round rocks such as pea gravel rolls and dislodge under pressure resulting in failure of the retaining wall.
Crushed stone 1 sizes are from 2 to 4.
The wall gets its strength from a sturdy base consisting of gravel.
Tall go with full size blocks.
600 mm wide the length of the wall the depth of the trench will be 6 in.
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.
High and weigh 50 to 75 lbs.
150 mm plus an additional 1 in.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
