Things You'll Need:
- Shovel
- Crushed rock
- Concrete blocks
- Landscape fabric (filter cloth)
- Measuring tape
- Level
- Spray paint
- Clean rock
- Hand chisel
- Circular saw
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Step 1
Use a measuring tape to come up with dimensions and determine where you will build the retaining wall.
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Step 2
Determine the linear feet of the project, so you know how many concrete blocks to purchase.
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Step 3
Make sure the area where the retaining wall will be built is clearly marked. Using spray paint will help.
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Step 4
Use a shovel to dig a trench. Make sure the trench is wide enough to fit a block plus a couple inches for rock. It needs to be deep enough to partially bury the first row of concrete blocks. Usually this will be 8 to 12 inches below ground level.
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Step 5
Add at least one inch of crushed rock to the trench. This will help make the base firm.
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Step 6
Make sure the trench is level by shifting the amount of crushed rock, so the blocks will be straight. Make sure the crushed rock is compact.
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Step 7
Place blocks side by side along the trench, leveling each one as you go.
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Step 8
If your rock wall includes multiple layers, stack the blocks in an alternating pattern. You can choose to recess the blocks or stack them straight on top of each other.
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Step 9
Place landscaping fabric between the concrete blocks and the dirt. When it rains, the dirt will be filtered and will not get the blocks muddy.
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Step 10
Fill the extra space between the concrete blocks and the landscape fabric with clean rock.
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Step 11
For end pieces and odd shapes, cut the blocks using a hand chisel or circular saw.
