초록 ▼

This invention relates to a sheet metal structural shape for use in building construction having a generally box shape with outwardly extending flanges at one end of the substantially parallel sides and inwardly extending flanges at the other end of the parallel sides forming turned inward ends of t

This invention relates to a sheet metal structural shape for use in building construction having a generally box shape with outwardly extending flanges at one end of the substantially parallel sides and inwardly extending flanges at the other end of the parallel sides forming turned inward ends of the inwardly extending flanges and a closure between the ends of the outwardly extending flanges closing the space between the sides at that end. The sheet metal structural shape may be advantageously used as a structural shape in deck structures and in wall structures according to this invention. One deck structure of this invention uses the sheet metal structural shape as a sub-purlin, or purlin on short spans, supporting insulation on the bottom outwardly extending flanges and having roofing material fastened to the inwardly extending flanges at the top end of the structural shape. Thus, a deck is provided with at least a major portion of the insulation beneath the roof decking. The wall structure of this invention provides a wall which may be entirely erected from one side, providing especially suitable shaft and exterior wall construction.

대표청구항 ▼

A sheet metal structural shape for use in building construction which is symmetrical about a bisecting plane having: opposing generally parallel equal length sides, a flange extending outwardly at substantially 90°from one end of each of said sides, a base closure extending from the outermost end of

A sheet metal structural shape for use in building construction which is symmetrical about a bisecting plane having: opposing generally parallel equal length sides, a flange extending outwardly at substantially 90°from one end of each of said sides, a base closure extending from the outermost end of one of said outwardly extending flanges to the outward end of the other of said outwardly extending flanges forming a closure between said parallel sides at said one end, and flanges projecting inwardly from the other end of each of said parallel sides, the terminal ends of said inwardly projecting flanges turned inwardly in continuous longitudinal abutment with each other.