The l [m] and R [MPa]."Rock" allows to input the length of the pile fixed into rock
The rock is only modelled as elastic material and no limit passive pressure is considered - contact stress can reach any values. In the frame "" the program checks, if maximum stress does not exceed design rock bearing capacity. Active pressure of the rock is not considered as null.
Note: In many cases, the slip surface follows the rock subsoil, hence this case should be always investigated.