Re: load security Hello Respectively, 1-DY 6.3.2.1. According to the article, you can increase the soil safety stress by maximum 50% for seismic situations on Class A, B and C soils. 2- For foundations other than raft foundations, the average of the soil stresses consisting of all combinations is taken and the soil stress is checked. (It should not be chosen to stay on the safe side.) 3- For foundations other than raft foundations, combinations of seismic conditions are also taken into account in soil stress control, and ground stress control is performed only under vertical loads for marking. (It must be selected.) 4-For foundations other than raft foundations, negative (-) soil stress control can be made on the foundations. 5- For raft foundations, the average of the soil stresses consisting of all combinations is taken and the soil tension control is performed. (It should not be chosen to stay on the safe side.) 6- For raft foundations, combinations of seismic conditions are also taken into account in the control of ground stress, and the ground stress control is carried out only under vertical loads for marking. (It must be selected.) 7- For raft foundations, negative (-) soil stress control can be done on the foundation.