On Safety in the Ultimate Limit State of Singly Reinforced Rectangular Section, designed with Allowable Stress Design Method

It would be predicted and has been practically planned that the design method of concrete structures in our country, Japan, would transfer from allowable stress design method to limit state design method, in the near future. We deem that for establishing the new design method, it would be necessarily needed that we should compare it with the allowable stress design method currently enforced, and we should widely checck its merits and demerits, on many various points of view as possible as. Here, in this paper we have practiced to investigate the safety in the ultimate limit state of singly reinforced rectangular section, which is designed with allowable stress design method enforced currently, considering the relationships between both of the two that, 1) the ultimate resistance moment of singly reinforced rectangular section, and 2) the resisting moment of the section by the allowable stress design method