Installation Instructions
39
RETAINING WALLS
Step 1 - Grid Placement
Cut geogrid to required lengths and place the grid as close to the face of the wall without exposing
it when following the contour of the curve. Place the next course of SRW block, taking care that the
grid sits at and is secured between the units. Each geogrid length should be laid perpendicular to
the wall face and pulled tight to remove any slack. The geogrid should never overlap on top of the
Clifton or Denver Units.
Step 2 - Successive Grid Layers
After the next course of block is placed, lay the grid to cover the area of non-reinforced soil below.
This will ensure 100% coverage. Place the next layer of inll soil on top of the geogrid by beginning
near the wall fascia and spreading it back across the grid. Backll in 3"-6" lifts, using only vibratory
plate compactors within a 3' area from the back of the wall. Place soil in the rest of the inll area in
maximum lifts of 6" based on the rating of your compaction equipment and compact to obtain a
95% Standard Proctor density. Repeat these steps for successive specied grid layers.
BASIC GEOGRID REINFORCEMENT - CONCAVE CURVE