Design and build your retaining wall to slope at a minimum rate of.
Retaining wall gravel board.
A wall that leans into the soil it retains is less likely to be pushed outward by soil pressure than a plain old vertical wall.
Then dig the holes for the posts fill them with wet cement and insert the posts immediately.
Instead of using stone or timbers make an attractive long lasting retaining wall from pressure treated 2x4s plywood and trim boards.
The block caps should overhang the retaining blocks by 1 to 1 1 2 inches.
The technique of using gravel boards spanning between post to retain soil is call a berlin wall in the construction industry.
You ll need to find a guy like my friend brad to help.
The most important aspect of any retaining wall is how you get rid of the water that will pool behind it.
The principle is that the active earth pressure on the boards and the wind loading on the fence above is resisted by the passive earth pressure in front of the buried section of the posts.
You need a french drain type system with a fine gravel behind the wall.
One cubic foot of sand for each post footing.
Long 1x2 stake for every stanchion.
Three cubic feet of gravel any type for backfilling.
Hi all im in the process of sorting out the garden and looking at potentially using concrete posts and concrete gravel boards as sleepers won t last long unless they re railway or oak the highest point the wall will retain is 3ft high.
I m replacing a fence.
The neighbour s garden is about a foot lower and the retaining wall has subsided.
Construction is fast and simple and the materials are much lighter to work with.
If i took out the old wall and put in 9ft concrete posts could i use 12 inch concrete gravel boards to make a small retaining wall.
Next mark the ground with chalk every 3 feet to indicate where to drive the posts.
How to build a retaining wall.
One gallon of wood preservative for all cut ends.
He doesn t need tons of.
Or am i asking for the fence to subside over time.
Using construction adhesive secure your block caps and create the top layer of your retaining wall.