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Ledgestone retaining wall building provider in Colorado: If the block Retaining wall is more substantial as in a metre high or more then the fence would have to be behind the wall instead of through or on top. Most Segmental Retaining Wall blocks do not have a big enough cavity or void for the fence post to be directly concreted inside them and would lack the strength to hold the weight of a fence. Generally, most walls are built using an aggregate (Gravel) backfill or in some circumstances No Fines Concrete (NFC). Because of this, an allowance has to be made for the fence post at the early construction stage such as installing PVC Piping as a sleave for the fence post to fit into, this would require some forethought and good planning.

How wide should a retaining wall trench be? The trench you are going to build your retaining wall in should be wide, deep, and level. Size the trench so there’s enough room for the block and at least 8 inches of space behind it. Excavate deep enough to completely bury at least one full course, including space for 6 to 8 inches of base material. Establish a level trench to ensure an even layer of base material. That will help prevent the wall from tipping after freeze/thaw cycles. Our experts use a laser level and a story pole to determine the depth of the trench.

DO start with a good foundation. Your retaining wall will only be as strong its support system. 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. The exact depth of the trench depends on the proposed height of the wall, but follow this rule of thumb: Dig a trench to be an eighth of the wall plus three inches. 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 and about five inches (or an eighth of the visible retaining wall) to start the wall below grade.

After mixing your concrete, pour the wall in horizontal layers of not more than 20 inches, beginning at the ends and moving toward the center. Use a ramp to wheel the concrete into position and a splashboard to direct the pour and control spillage. Remove the spacers as you go, and work the concrete against the sides of the form and around the reinforcement as each layer is poured. Pour layers as soon after the previous one as possible to avoid cold (non-bonded) joints, which cause leaks. Strike off the concrete flush with the top of the form, and then trowel it to the desired finish. Insert anchor bolts for mud sills and wooden caps once the concrete has set sufficiently to hold them. Because of the pressure created by the slope of the lawn, cure the concrete for at least seven days before removing the forms. See more info on Best Retaining Walls Colorado.

We serve all of Colorado out of our home office in Colorado Springs. Please feel free to reach out to us with any questions you may have. Estimates are always free and everything we touch comes with a warranty. Colorado Retaining Wall specializes in the building and repair of retaining walls. Whether the wall is for a backyard or driveway of a residence or a commercial Shopping Center, we design and build large block walls for all Earth retention requirements. We have the ability to fortify the wall with shotcrete or soil nails which would include helical tie-backs or micropiles. Nearly every wall we build requires engineering and we have deep relationships with engineers that work hand-in-hand with our foremen regardless of the size of project. Please read our reviews and look and our photo gallery.