Verification According to EN 1997
When running the verification analysis according to EN 1997 the choice of a given "Design approach" and "Partial factors" is important. Forces and loads are reduced in all design approaches.
The value of capacity utilization Vu is calculated and then it is compared to 100%. The value of capacity utilization is given by:
where: | Ma | - | sliding moment |
Mp | - | resisting moment |
In the case of design approach 2 the resisting moment Mp is determined from non-reduced soil parameters but considering the reduction of resistance on the slip surface using the coefficient γRs.
In the case of design approach 1 and design approach 3 the program reduces for the determination of the overall resisting moment Mp the strength parameters of soil (angle of internal friction and cohesion).