Retaining walls are a big deal; they perform a very important task. They hold back an immense amount of earth, and as such, they need to be structurally sound and able to withstand the test of time. One of the most important factors in the building of a retaining wall is soil reinforcement using Geogrid. Geogrids are used in retaining walls that exceed a predetermined height and/or are affected by other forces that may have an impact on how the retaining wall performs.
Geogrid is a synthetic material that has an open, thin sheet, grid-like structure that is used to reinforce soil. A lot of people will compare the appearance of Geogrid to orange snow fencing – but never get the two confused!
Typically, retaining walls are reinforced every two courses – or every 12-24” depending upon the retaining wall block you are using. The process of laying Geogrid should be started just after the first row of blocks are installed, filled and compacted (if the block requires it), and adjusted for level.
One of the best resources for the installation of Geogrid is Allan Block. You can find lots of information on their website here.
If you have any questions about retaining walls and Geogrid, please Contact Us today or stop by either of our locations to speak with our staff.