BUILDING STRUCTURE

PROBLEM TO BE SOLVED: To enhance economical efficiency by achieving rational stress sharing, in a frame including a plurality of span parts with different column spans.SOLUTION: In a building structure, adjacent columns 1 are joined together via a beam 2 by arranging a plurality of types of span parts S with different column spans L. Span arrangement is adjusted on the basis of each total bending moment value Mc that is the sum of a designed bending moment value Ma in the case of a sustained load acting on each beam 2 and a designed bending moment value Mb in the case of a seismic load. Thus, the total bending moment value Mc acting on the beam 2 for the plurality of types of span parts S is equalized.