How Many Inches Of Concrete For A Retaining Wall

How many retaining wall blocks do you need.

How many inches of concrete for a retaining wall.

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. Poured concrete is typically the most expensive followed by wood timber and then stones and pavers. Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding. Mark each piece at 36.

Tall wall excavate a trench deep enough to accommodate 4 to 6 in. Of compacted base 1 in. Finding how many concrete blocks you need for your project can seem like a confusing and challenging task but it can be simplified using the calculator above. For example if you want the finished height of your retaining wall to be three feet 36 inches tall you d need to dig the trench eight inches deep to accommodate three inches of crushed rock.

Cut as many pieces as necessary for vertical reinforcement every 32 inches. Before building a retaining wall plan it out. The pieces are the height of the wall plus 36 inches for an overlapping bend in the footer. Planning a retaining wall.

How to build a concrete wall figure a. Follow the block manufacturer s instructions for wall height limits. Avoid placing the retaining wall where downspouts are pointed to keep standing water from forming inside the wall. Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.

For example you can estimate a 10 wide by 2 high retaining wall and observe the materials required. If concrete is not being used to build the footing as is common for drystacked stone walls and very short walls the footing can simply consist of about 6 inches of compacted base material like angular sharp edged gravel. For example if you are pouring a retaining wall that will be 12 inches thick and will use wooden planks that are 1 1 2 inches thick for your forms you ll need to space the stakes about 15 inches apart 12 inches for the retaining wall plus two pieces of 1 1 2 inch thick wooden board. Retaining wall cost varies by material.

Block walls usually cost 20 30 per square foot which can vary depending on the type of block used concrete block walls can last a lifetime when installed correctly and add beauty to almost any landscape. If you re building a concrete block wall then check out our concrete block calculator. Of leveling sand and half the height of the first course of blocks. Concrete blocks are concrete masonry units or cmus but we often refer to them as concrete blocks or cinder blocks learn more about concrete masonry units a wall typically requires 1 1 8 blocks per square foot.