How To Install Allan Block Retaining Wall

How to Install an Allan Block Retaining Wall

Allan Block retaining walls are a popular choice for landscaping projects because they are durable, easy to install, and can be customized to fit any design. If you're planning to install an Allan Block retaining wall, here are the essential steps you need to follow:

1. Plan Your Wall

The first step is to plan your wall. This includes determining the length, height, and shape of the wall, as well as the type of Allan Block you will be using. You will also need to decide where the wall will be located and how it will be tied into the existing landscape.

2. Excavate the Area

Once you have planned your wall, you need to excavate the area where it will be installed. The excavation should be deep enough to accommodate the height of the wall plus a 6-inch gravel base. The width of the excavation should be at least twice the width of the wall.

3. Install the Gravel Base

The next step is to install a 6-inch gravel base. The gravel will help to level the ground and provide drainage for the wall. Compact the gravel using a hand tamper or plate compactor.

4. Lay the First Course of Blocks

The first course of blocks is the most important, as it will set the level and alignment for the rest of the wall. Start by laying the blocks in a straight line along the bottom of the excavation. Use a level to make sure that the blocks are level and use a rubber mallet to tap them into place.

5. Continue Adding Courses

Once the first course is in place, you can continue adding courses of blocks. Offset the joints between the blocks in each course to create a stronger wall. Use a level to make sure that each course is level and use a rubber mallet to tap the blocks into place.

6. Backfill the Wall

Once the wall is complete, you need to backfill it with soil. The soil should be compacted in 6-inch lifts using a hand tamper or plate compactor. This will help to support the wall and prevent it from moving.

7. Cap the Wall

The final step is to cap the wall with coping stones. Coping stones are designed to protect the wall from the elements and add a finished look. Use a level to make sure that the coping stones are level and use a rubber mallet to tap them into place.