Retaining Wall Corners Using Geogrid Reinforcement
Video: How to build an inside corner in a retaining wall.
Video: How to build an outside corner in a retaining wall.
Installing Geogrid on Inside 90° Corners
On inside corners additional geogrid is required to extend past the end of the retaining wall 25% of the completed wall height.
- Roll out the AB Reinforcement Grid behind the blocks, keeping the edge of the geogrid tight against the front lip of the blocks. Extend the geogrid past the inside corner by at least 25% of the wall height in one direction.
- Place an alternating corner block on the second course and set the entire second course of block in both directions. Level, backfill and compact again.
- On the next course of block where geogrid is required extend the geogrid past the inside corner in the opposite direction. Never place geogrid directly on top of another layer of geogrid.
Tip
EXAMPLE: Finished wall height is 6 ft. (1.8 m), divide by 4 which equals 1.5 ft. (0.45 m). The length the geogrid will need to extend past the corner is 1.5 ft. (0.45 m). How to build an inside corner in a retaining wall Video: How to build an inside corner in a
Installing Geogrid on Outside 90° Corners
Each side of the corner must be reinforced independently from each other.
- Roll out the AB Reinforcement Grid to the outside corner in one direction. Never place geogrid directly on top of another layer of geogrid.
- On the next course of block where geogrid is required, lay the next layer of geogrid perpendicular to the previous layer. Using AB Reinforcement Grid you will not need a layer of geogrid on every course due to its biaxial strength.
