Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
How to build a retaining wall with concrete blocks.
Of leveling sand and half the height of the first course of blocks.
Of compacted base 1 in.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
How to build a concrete wall figure a.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.
Using a tape measure decide the length and the width of your retaining wall then mark off the area with the garden stakes and string.
To create a solid foundation dig a trench for the first course of your interlocking retaining wall blocks to sit in and make sure the ground remains even throughout.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
Follow the block manufacturer s instructions for wall height limits.
A retaining wall will normally have a high newton block reinforced concrete wall often with piers sitting on a reinforced foundation even a low one with if required a fair face wall sitting in front.
But for diyers retaining wall blocks made of concrete are the best solution.
Staring at one end place the first course of concrete blocks top side up on the crushed rock with the front lip facing up and towards the front of the wall.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Concrete blocks are ideal for building walls to hold back the soil after you dig into a slope for a pathway patio or another landscaping project block retaining walls are generally the same as freestanding block walls but with a few important differences.
Retaining walls can be build of many different materials including wood timbers bricks or natural boulders.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
The wall will also have weep holes to prevent the build up of water behind the wall.