Stack wood planks to create a frame for the wall.
How to build a large concrete retaining wall.
Design build manufacturer of interlocking large concrete blocks for gravity retaining walls security walls railroad flood control and containment bins.
Tie a string to a stake at the wall s desired height and stretch across to opposite stake or stakes.
Using a shovel mark the ground where the retaining wall will be built.
A level wall provides modular blocks stone and timbers with more surface contact with the courses above and below them.
Of leveling sand and half the height of the first course of blocks.
Most concrete retaining wall block systems have some kind of built in lip or pin system that automatically creates the step back as you build.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Step succeeding courses back 3 4 in overlap vertical joints at least 4 in.
We wedge the pieces and tip the walls so it is not just straight up and down.
We break the pieces into square foot blocks.
A poured wall is much stronger and generally last many more years than a block wall.
When building a tiered set of retaining walls position the higher wall behind the lower wall at twice the distance as the height of the lower wall.
Keep the boards less than 8 ft 2 4 m long so they aren t too difficult to handle.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
If the distance is greater than 8 drive additional stakes so that the gaps do not exceed 8.
Pouring a concrete retaining wall is not that difficult and this easy to follow how to guide will show you just what to do.
We do a lot of broken concrete retaining walls and they work very well.
These wood barriers hold the concrete in place as it dries so you will need to create 2 of them.
Follow the block manufacturer s instructions for wall height limits.
For example if the lower wall is three feet.
Of compacted base 1 in.
Many variables affect that cost including the design the wall s location on your property and how much concrete contractors in your area charge.
To mark a free form layout use a rope or hose to outline the shape.
The cheapest and easiest material to use is 2 in 4 in 5 1 cm 10 2 cm boards cut from a softwood like pine.
In most cases square footage is the most significant factor in determining your final cost to build a retaining wall.
Drive long wooden stakes into the ground at each end.
And secure one row to the next with pins.
Nationally the cost to install a concrete retaining wall ranges from 2 000 to 15 000 but the average cost is 3 500.