As a final check, the factor of safety (F) must be calculated for the static bearing capacity condition
(i.e., non-earthquake analysis, Sec. 6.2). The reason is because the factor of safety for the static condition
could be the governing
criteria. This
often occurs when the liquefied
soil layer is at a significant
depth below the bottom of the footing, or in other words, at high values of T/B. In any event, the factor
of safety for the non-earthquake bearing capacity condition (Sec. 6.2) should be at least 3 and the factor of
safety for the earthquake punching shear analysis (Eqs. 6.30 and 6.31) should be at least 5