Reinforcement Placement on Curved Walls
Most accepted design methodologies stipulate that the reinforcement shall be continuous along the
length of the wall at both the front and rear of the reinforced soil zone. Geogrid layers should not
overlap unless there is compacted soil separating the individual layers. In addition, the natural
rectangular sections of geogrid should
be cut to form a wedge shape.
Rectangular reinforcement sections will naturally overlap in a pie-shaped fashion at either the front or the back of the reinforced zone depending on whether the curve is “inside” or “outside”. The figures show how reinforcement is laid out in this situation. All of the pie-shaped overlap areas should be separated by at least 3” of backfill.
Overlay additional sections of
geogrid so that the back of all pie-shaped gaps are covered.
Place 3” fill between
Place 3" of fill between overlapping geogrid layers.