Segmental Retaining Walls (SRWs) have evolved from being used in garden and landscape applications in the 80’s and 90’s, to now having found their way into commercial projects, roadway sites, and major industrial applications. With estimates of hundreds of millions of SRWs installed worldwide, mortarless segmental retaining walls have proven their value and durability in the construction marketplace. Projects range from walls up to 50 ft (15.2 m) in height to miles of walls used in roadway, water and other applications. The flexible nature of the system has proven to eliminate the need for frost footings in northern climates, provide additional drainage in tropical areas, and allow for additional flexibility in earthquake plagued sections of the world. In short, there are very few site problems that cannot find a cost effective solution using SRWs. Segmental Retaining Walls offer several benefits and can be designed to conform to any shape while increasing the site's outdoor space, particularly on high sloped terrains. Single tiered concrete retaining walls create an impressive structure and convey grandeur while multi-tiered walls can include landscaped terraces, adding a visually stunning element to a very functional architectural solution. Where high grade changes exist, the segmental retaining wall incorporates geogrid to utilize the weight of the reinforced soil as part of the overall structure.
In most jurisdictions, retaining walls over 4 feet need engineering design and permitting.
Segmental retaining walls offer many advantages: