| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor beam capable of securing an underfloor space for performing work.SOLUTION: A floor beam includes a web 11, an upper flange 12 that is joined to an upper edge of the web 11, and a lower flange 13 that is joined to a lower edge of the web 11. In regard to a height from the upper flange 12 to the lower flange 13, beam ends 1A positioned on both longitudinal sides of a beam center part 1B is set lower than the beam center part 1B. Thus, since the beam ends 1A are higher than the beam center part 1B under a floor, an underfloor space under the beam ends 1A is set wide to facilitate underfloor work. |
