Hopefully this question hasn’t been asked before.
Section 12.13.4 of ASCE 7-05 is titled “Reduction of foundation Overturning” and basically allows for a 25% reduction of the overturning effects at the soil-foundation interface as long as the ELFA was used and the structure is not an inverted pendulum. Does this section mean we are allowed to reduce the seismic loads by 25% when applying the loads to the 0.6D + 0.7E load combinations in the calculation for overturning? Basically ending up with an effective 0.6D + .525E load combination (0.6D + 0.75*0.7E) for overturning?
Section 12.13.4 of ASCE 7-05 is titled “Reduction of foundation Overturning” and basically allows for a 25% reduction of the overturning effects at the soil-foundation interface as long as the ELFA was used and the structure is not an inverted pendulum. Does this section mean we are allowed to reduce the seismic loads by 25% when applying the loads to the 0.6D + 0.7E load combinations in the calculation for overturning? Basically ending up with an effective 0.6D + .525E load combination (0.6D + 0.75*0.7E) for overturning?