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fall46
06-10-2005, 03:11 PM
When constructing retaining walls. One aspect has left me somewhat confused. Which is how deep (wide) does one backfill with clean minus behind the wall relative to its actual height... I have heard minimum 12'' wide by 12'' tall and other times always within 6'' of the top of the wall. My neighbor and I are constructing a wall using Anchor Diamond Straight that is roughly 30 '' in height . Grass will be on top of the drainage stone and butted up to the caps..... Also in terms of the pipe should it be laid flat on your base or should it be slightly pitched say 1'' every 10ft'?.......The soil is somewhat clay in nature and the grade of my property slopes toward the wall.

Any insight into these issues would be most appreciated