8.3.2 Soil Nailing Although the analysis is somewhat similar to other reinforced walls there are some differences. The slope stability program must be specifically modified to allow locating the rods. It may also require modification to use a logarithmic spiral as the failure surface rather than part of a circle. A rod stability analysis for both tension(or pullout )and bending (on the potential slip plane)is also required-but often just for pullout. The design procedure:①④ 8.3.2 Soil Nailing ❖ Although the analysis is somewhat similar to other reinforced walls there are some differences. ❖ The slope stability program must be specifically modified to allow locating the rods. ❖ It may also require modification to use a logarithmic spiral as the failure surface rather than part of a circle. ❖ A rod stability analysis for both tension (or pullout ) and bending (on the potential slip plane) is also required-but often just for pullout. ❖ The design procedure:①～④