Tall go with full size blocks.
What size gravel for retaining wall base.
Due to soil erosion your retaining wall should be built on a solid foundation made from paver base.
Crushed stone 1 sizes are from 2 to 4.
A level base on which the wall sits.
This prevents water from building up behind the wall.
Choose a paver base with landscape rocks between 1 2 inch and 3 4 inch in size.
600 mm wide the length of the wall the depth of the trench will be 6 in.
Fill the trench with a 2 to 3 inch layer of paver base.
Typically this gravel ranges in diameter from 2 5 inches 6 35 centimeters to 4 inches 10 16 centimeters.
More information on retaining walls where the base trench steps up a slope.
Retaining wall base trench.
Similar to gravel paver base is a form of construction aggregate that contains crushed rocks such as limestone.
Placed behind the retaining wall to promote drainage of water away from the wall.
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.
You ll typically find them at landscape supply yards.
Gravel known as size 1 is relatively large.
150 mm plus an additional 1 in.
Long x 6 to 8 in.
The base material should only consist of angular sharp edged particles such as minus gravel.
The leading cause of wall failure.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
Crushed stone 67 sizes from 3 4 down to fine particles.
They re 16 to 18 in.
It can be difficult to work with as it generally cannot be shoveled and instead must be moved individually stone by stone.
The wall gets its strength from a sturdy base consisting of gravel.
The largest of the crushed stone grades.
High and weigh 50 to 75 lbs.
A retaining wall must have the strength to hold back the weight of the soil plants and sometimes small structures behind it.
Round rocks such as pea gravel rolls and dislodge under pressure resulting in failure of the retaining wall.
For fill road and slab base.
For heavy duty walls up to 30 ft.
The various sized crushed gravel with the fines helps ensures for appropriate compaction.
