GGU-RETAIN: Analysis of sum H

When analysing the stability of soldier pile walls, the active earth pressure beneath the excavation base may be neglected (see EAB, R 15). However, it must be demonstrated that this neglected active pressure can be taken up with a sufficient margin of safety (generally 1.5) by the passive earth pressure. GGU-RETAIN performs the necessary investigation. It is possible that to comply with the EAB, R 15 an increase in embedment depth is necessary, which GGU-RETAIN will carry out automatically. If it is not possible to demonstrate wall stability, you are given advice on how to proceed according to the EAB.

The option given in EAB, R 15, para. 6 c) and 7 c), to include the entire earth pressure down to the soldier pile base or to the theoretical toe in the earth pressure redistribution, is not implemented in GGU-RETAIN. The other options listed there (increasing the embedment depth, reducing the fixity or dispensing with the embedment in the analysis, analysing the wall as a continuous wall) are available in the program.