Re: FLOOR EARTH LOAD URGENT 1-if all underground TDY 2007 1.1.5 "...the structures that are completely underground and other structures designed according to calculation and security principles different from the buildings are out of the scope of this Regulation." 2- If it is the basement of any building, two types of effects of the soil can be taken into account. a-soil thrust in shears. Picture no. 1 b-if the slab is also underground, g addition of earth load to slab load. Also, if it is used above the ground, the appropriate q load arrangement. Picture no.2