Put Retaining Wall On Concrete Or Gravel

Second a retaining wall must have properly compacted backfill.

Put retaining wall on concrete or gravel.

Use crushed stone behind the wall loose gravel and stones don t hold water like soil does. In its most basic form it s a structure that holds soil 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 diyers have come up with an interesting trick.

For diy purposes opt for manufactured blocks that are. Tall wall excavate a trench deep enough to accommodate 4 to 6 in. Of leveling sand and half the height of the first course of blocks. Basic retaining wall installation step 1.

Of compacted base 1 in. The leveling pad is the first piece in constructing a stable wall that will last for. Follow the block manufacturer s instructions for wall height limits. After you finish the first course fill the space between your retaining wall and.

The first course of block that you lay is known as the base course. The base of a retaining wall should be set below ground level. Crucial for supporting the rest of the wall a good base is made of compacted soil and at least a six inch layer of compacted sand and gravel. If needed reposition it using additional.

Retaining walls can be constructed using a variety of materials from poured concrete and large timbers to natural stones even bricks. That s right the idea is that. Base course drainage pipe. Rather than messing around with mortar they lay the walls down like lego pieces using concrete while it s still in the bag.

Walls over 4 foot should use geo grid fabric different block designs limit allowable height use filter fabric over wet or dry soil then cover with gravel. We go about 6 8 deep behind the wall with loose rock usually crushed granite and up to the second row from the top. Your retaining wall design will determine how you mark the area. Continue laying your first course of blocks making sure to check that every block is level.

Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding. The following points need to be considered when planning your retaining wall installation. Excavation leveling pad. Soil holds water so the dirt will expand and contract during winter thus pushing on the wall and eventually toppling it over.

How to build a concrete wall figure a. Building a retaining wall in the conventional ways is not a trivial matter. Position your first block and use a standard level to make sure it s even.