Installation Instructions

All installation instructions are the same as for gravity retaining walls except for the addition of geogrid.

Geosynthetic reinforcement is an engineered product that is typically comprised of polypropylene, polyes-

ter or other high tensile material. Used in conjunction with segmental retaining wall blocks, it helps stabi-

lize the soil mass behind a wall. Depending on the wall design, the length and the number of grid layers

will vary. Please remember, plasticized snow fencing is not a high tensile material and should not be used

in place of geogrid.

Generally, stronger geogrids must be rolled out perpendicular to the retaining wall. As it is unrolled, it

is in the same direction that it should be installed. Bidirectional grids are the same strength in both di-

rections and can be rolled out parallel to the retaining wall or perpendicular to the retaining wall. If the

geogrid depths are the same as the roll width, it may be more efficient to roll out the geogrid parallel to

the retaining wall. If the geogrid depths called for are different than the roll width or if the wall curves, it is

best to roll out the geogrid perpendicular to the retaining wall.

GEOGRID REINFORCED WALLS

24”

Cap Block

Clifton Block

Geosynthetic

Reinforcement

4" Ø Drain Tile (Elev. Varies)

Other Layers

Layer

12" of Free Draining Aggregate

Finished Grade

6º

6" Min. Compacted Granular Base Leveling Pad

CLIFTON STRAIGHT