Verification - Theory of Limit States
The analysis checks whether the passive (resisting) forces Fp acting on a slip surface are greater than the active (shear) forces Fa:
where: | G | - | gravity force |
Sa,vert | - | vertical component of active pressure | |
Sa,hor | - | horizontal component of active pressure | |
di | - | length of ith section slip surface | |
d | - | length of slip surface | |
Fh,n | - | bearing capacity of nth nail behind slip surface per 1 running meter | |
ci | - | cohesion of ith soil layer | |
φi | - | angle of internal friction of ith layer | |
υ | - | inclination of slip surface | |
α | - | inclination of nails from horizontal direction |