Solution According to CSN 73 1001
The bearing capacity of foundation soil composed of rocks or weak rocks follows from articles 97 - 99 of standard CSN 73 1001 "Foundation soil below spread footing" approved 8.6. 1987.
As input parameters the analysis requires the unit weight of soil γ, uniaxial compression strength σc, Poisson's ratio ν and deformation modulus Edef.