the improved steel beam and girder structure for lowering story-height

摘要

In the present invention, a deck plate (not shown) or a slab formwork (not shown) A vertically installed web 100; A lower flange (110) horizontally installed at a lower end of the web (100); A vertical plate 130 vertically installed at both ends of the lower flange 110; A deck rest 150 for holding the deck plate (not shown) or the slab form (not shown) horizontally installed on the upper end of the vertical plate 130; , / RTI A plurality of reinforcing plates 200 are installed in the concrete pouring portion 170 which is a space surrounded by the web 100, the lower flange 110 and the vertical plate 130, Wherein the reinforcing plate (200) is combined with the concrete to increase the lateral force resistance after the concrete is placed in the concrete casting part (170).