SHEET METAL UNIT USED FOR COMPOSITE FLOOR OR COMPOSITE WALL STRUCTURE, ETC.

摘要

PURPOSE:To increase jointed force with concrete, by providing X-shaped protrusions at the sides of a sheet metal unit formed by a sheet of folded sheet metal and used for a composite floor or the like convered with a concrete layer. CONSTITUTION:A sheet of metal is folded to form a sheet metal unit 7 composed of upper bodies 1, lower bodies 2, sides 3, etc. And a plurality of X-shaped protrusions 4 having symmetry, which can effectively resists against stress from various directions, are provided on the sides 3. The sheet metal unit 7 is convered with concrete layer to form a composite floor or a composite wall. So a composite plate having a large jointing force of the sheet metal unit 7 and the concrete layer can be obtained thereby.