How To Engineer A Retaining Wall. The failure plane is the angle at which the soil can retain itself before collapsing. They try to circumvent the need for engineering by cheating on their designs when.
The failure plane is the angle at which the soil can retain itself before collapsing.
How to build a retaining wall. If you decide to do this yourself, we suggest finding someone to help along, preferably someone with some sort of larger walls need the help of an engineer. Retaining walls that exceed a certain height must be designed by an engineer and approved by the local council. We have an old retaining wall that is about four feet tall on the edge of our property.