Mr. Sanju
Actually I have suggested to decrease the facotor of safety to 3/4 (0.75) so that one is not required to assign different ratio for different load case and that ratio of 1.0 would be valid for all the load cases. As Shaymore proposes to increase the allowable stresses for seismic load case, it means that he would be adopting working stress method of design and that load factor of 0.75 would meet his purpose.