Abstract: 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.

Abstract: A poured concrete insulated deck structure comprising a series of parallel sub-purlins having horizontal flanges extending outwardly at the lower portion of the sub-purlin, a temperature resistant, moisture permeable formboard resting on flanges between adjacent sub-purlins, the formboard having secured to its upper surface rigid synthetic polymer foam having spaces vertically therethrough providing communication from the upper side of the formboard to the upper side of the foam, spaces having an area of more than about 5 percent of the area of the formboard, and poured concrete adjacent the upper side of the foam and extending through the spaces contacting the upper side of the formboard, the concrete completing drying by escape of moisture through the formboard. The structure of this invention results in a unitized structure affording high strength, high insulation properties, fire resistance, design versatility and economy.

Abstract: 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 a slot between the 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 structure shape as a sub-purlin, or purlin on short spans, supporting insulation on the bottom outwardly extending flanges and having sheet metal 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 steel roof decking.

Abstract: A sheet metal structural shape for use as a stud or mullion in wall construction or a purlin or sub-purlin in deck construction which is symmetrical about a vertical bisecting plane having a central vertical web, two diagonal legs projecting downwardly from one end of the web forming an included angle of about 30.degree. to about 90.degree., each of the diagonal legs having a leg projecting downwardly at its extremity in a plane substantially parallel to the web, each of the parallel legs having flanges extending outwardly at their extremity, a closure side extending between the extremities of the flanges enclosing the area formed by the diagonal sides, parallel sides and closure side, and a stiffening member at the other end of the web. A wall structure utilizing a spaced series of the metal structural shapes with a wall material attached to the flanges of adjacent structural shapes.

Abstract: A poured concrete insulated roofing structure installed over roof support members and having gypsum formboard with its underside adjacent the roof support members and secured to with its upper side adjacent rigid synthetic polymer foam, the polymer foam having spaces vertically therethrough over more than about 5 percent of the area of the gypsum formboard, and poured concrete over the foam and extending through the spaces into contact with more than about 5 percent of the formboard.

Abstract: A sheet metal structural shape for use as a stud or mullion in wall construction or a purlin or sub-purlin in deck construction which is symmetrical about a vertical bisecting plane having a central vertical web, two diagonal legs projecting downwardly from one end of the web forming an included angle of about 30.degree. to about 90.degree., each of the diagonal legs having a leg projecting downwardly at its extremity in a plane substantially parallel to the web, each of the parallel legs having flanges extending outwardly at their extremity, a closure side extending between the extremities of the flanges enclosing the area formed by the diagonal sides, parallel sides and closure side, and a stiffening member at the other end of the web. A wall structure utilizing a spaced series of the metal structural shapes with a wall material attached to the flanges of adjacent structural shapes.