
Most Allan Block retaining wall units have an average depth (front to
back) of at least 10 in. (25 cm). The 10 in. (25 cm) minimum depth of
facing unit is recommended because segmental retaining wall units of this depth or greater have a
proven performance record while in service over many decades. This recommendation
also recognizes that as the unit depth decreases, so does the stability of the
facing, particularly overturning resistance during construction or while in
service.
Smaller srw's, including smaller Allan Block products have a depth of
less than 10 in. (25 cm). These blocks should
be limited to walls not exceeding 10 ft (3 m) in total height, unless used in
conjunction with larger blocks in a patterned wall. (ref. BP, Chapter 2.12)

No comments:
Post a Comment