A segmental retaining wall is cutting edge technology made of concrete. Wall blocks are manufactured, often in the same facilities as pavers, ensuring that all the blocks are a uniform size and strength. Whether you select a purely functional appearance or a block that mimics natural stone, segmental retaining walls are designed to work as a system.
How a segmental retaining wall is built
The construction of a segmental retaining wall is quite different from that of a traditional masonry wall. For a segmental wall, we dig a wide, shallow footer and fill it with compacted aggregate. This base is leveled and we can immediately begin laying the block. No mortar is used to hold the blocks in place. Instead, the blocks are aligned using pins, or via tabs or notches formed right into the block. At certain intervals, a product called geogrid is placed between courses of block and extended out behind the wall. Clean gravel is backfilled immediately behind the wall, and the wall is often finished with a cap.
The advantages of segmental retaining walls
Segmental retaining walls are designed to move with the slight expansion and contraction of the soil due to freeze and thaw. This almost imperceptible flexibility results in an extremely durable wall system. Segmental walls can also be built quickly, and in a variety of conditions.
As mentioned above, segmental walls come in a variety of styles. To determine which is right for your project, and to get the design process started, contact us today.