Embed to a depth that provides 4-feet horizontal bench to daylight (i.e. For a 4H:1V slope, embed the toe of wall 1-foot minimum)
AASHTO requires 24” minimum for slopes steeper than a 4H:1V
AASHTO requires 24” minimum when the wall is in a water application with no permanent erosion prevention measures such as rip-rap or a hardened liner above grade.
Embed toe of wall below curbing or other site components to be installed after wall construction.