Sheet metal structural shape and use in building structures

In an insulated deck structure the components comprising:

• a spaced series of parallel sheet metal structural shapes having a central web, said shapes being symmetrical about a bisecting plane parallel to and through said central web, two diagonal legs projecting downwardly from one end of said web forming an included angle of about 30.degree. to about 90.degree. between said legs and having its vertex at the bottom of the web, said diagonal legs having a vertical height of about 11/8 to about 10 inches, each diagonal leg having a leg projecting downward at its extremity in a plane substantially parallel to said web, said legs being substantially parallel, each of said parallel legs having flanges extending outwardly at their extremity, a closure side extending between the extremities of said flanges enclosing the area formed by said diagonal sides, said parallel sides and said closure side, and a stiffening member at the other end of said web, said stiffening member being narrower than said flanges and substantially less height than the height of said diagonal legs;
• insulating resting on said flanges and extending between adjacent structural shapes;
• wood decking above and fastened to the stiffening member of said structural shape;
• and
• a weatherproof roofing surface above said wood decking.

In an insulated deck structure the components comprising:

• a spaced series of parallel sheet metal structural shapes having a central web, said shapes being symmetrical about a bisecting plane parallel to and through said central web, two diagonal legs projecting downwardly from one end of said web forming an included angle of about 30.degree. to about 90.degree. between said legs and having its vertex at the bottom of the web, said diagonal legs having a vertical height of about 11/8 to about 10 inches, each diagonal leg having a leg projecting downward at its extremity in a plane substantially parallel to said web, said legs being substantially parallel, each of said parallel legs having flanges extending outwardly at their extremity, a closure side extending between the extremities of said flanges enclosing the area formed by said diagonal sides, said parallel sides and said closure side, and a stiffening member at the other end of said web, said stiffening member being narrower than said flanges and substantially less height than the height of said diagonal legs;
• insulation resting on said flanges and extending between adjacent structural shapes;
• precast decking above and fastened to the stiffening member of said structural shape;
• and
• a weatherproof roofing surface above said precast decking.