How Much Concrete Do I Need For A Retaining Wall
Make sure to account for the first row being half buried.
How much concrete do i need for a retaining wall. The depth of the concrete is always something you need to interpret based on the height and width of the wall. To estimate how many blocks you ll need per row divide the total length of the wall by the length of the block. The spacing between the stakes will depend on how thick your retaining wall will be and the thickness of the wooden planks used as the forms. The footing dimensions will largely be determined by the size of the wall.
Our concrete wall calculator or estimator helps you determine how much material you need and takes the guesswork out of buying concrete mix. For example if the desired wall height is 6 feet the wall should be embedded below grade by 7 8 inches. So volume of retaining wall volume of base slab volume of stem. Consider getting several professional estimates to get the best labor cost and find the right company for your project.
Start by measuring the wall width and height. For a stacked block retaining wall that s no higher than four feet a trench filled with three inches of crushed rock will help keep the wall from shifting and settling. To figure out how many rows you ll need divide the ideal wall height by the height of the block. Most experts suggest embedding the first course of blocks below grade about 10 of the wall height to support the wall correctly.
Determine the planned wall s height and width. A poured concrete footing for concrete block or brick walls should be at least twice as wide as the planned wall. If you re building a retaining wall then check out our retaining wall calculator. To calculate the volume of retaining wall we need to calculate the volume of retaining wall.
The exact depth of the. For example a 10 x 10 wall using a 16 x 8 x 8 block will require an estimated 120 blocks and cost about 185 for material. Here i have divided the retaining wall into two parts part a is the base slab and part b is the stem of retaining wall. For a recycled concrete retaining wall 4sons concrete typically charges 12 to 20 per square foot compared to their typical fee of 23 to 28 per square foot.
The footing should be at least as thick vertically as the wall s planned width. As an example one 4sons concrete customer wanted 20 yards of driveway demolished and 8 yards of retaining wall built in their garden. Volume of base slab l x b x h 10 x 3 x 0 2 6 m.