The drainage and compaction of soil at the base and behind the wall are key to its stability. ![]() The design needs to take into consideration the height of the wall, natural soil and water conditions, the materials to construct the wall, and other factors. This friction, the friction at the base of the wall block, and the soil within the embedment depth at the toe of the base block work to resist the soil pressure tending to push the wall over. The purpose of the geosynthetic is to engage friction with soil behind the wall. ![]() So, when the soil below it moves due to frost, the wall moves with it, and back again when the frost is out of the ground. The blocks are typically filled with crushed stone. One block rests on top of the next and on top of a compacted gravel leveling pad. Click here for more technical information on retaining wall blocks. All our blocks comply with the South African National Standard and in addition, our blocks have been tested for block-on-block friction and nib shear strength. 2 x 2 x 6 V-Groove Block Unfaced 3600 lbs. Bosun manufactures 3 different Retaining Wall Blocks of which two are patented. Regardless, it is typically less costly to install than a cast-in-place concrete wall because it does not need to extend to frost depth and the total amount of concrete is less. Return concrete blocks are all V-groove blocks (except V Block Caps) 222, 224, 332 and 334 blocks. Over 4 feet tall, it needs to be designed with geosynthetics by an Engineer. ![]() Up to 4 feet tall (base to top of wall), it can be designed and installed by a qualified landscaper. Nicolock retaining wall blocks are designed and engineered for optimal performance, featuring a unique interlocking design that improves stability and. segmental concrete block) retaining wall may be your best option. Whether you are looking for a lower cost retaining wall to enhance your yard or to support your driveway, the Interlocking Concrete Block (ICB) (a.k.a.
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