Aluminum building

Claim 1

The combinaTion of a building structure formed of a plurality of extruded members, comprising: a U-shaped base channel adapted for attachment to a foundation; a plurality of wall stud members having a generally rectangular hollow cross-section positioned vertically within said U-shaped base channel; a three-sided elongated cap member positioned over the uppermost ends of said vertical wall stud members, said three-sided elongated member having two parallel sides and a third side joining said two parallel sides, one of said parallel sides having a width greater than the width of said opposite parallel side, the width of said parallel sides being determined to position said third side at a selected angle corresponding to the roof angle of said building; a horizontal longitudinal ridge beam, said ridge beam including a vertical central support flange, top and bottom side flanges extending from each edge of said vertical central support flange on both sides of said central support flange, said top and bottom side flanges extending from the same side of said vertical central support flange being positioned parallel to each other and forming an angle with said vertical central support flange corresponding to the selected angle of the roof of said building, the bottom outwardly extending side flanges of said ridge beam having first L-shaped flanges formed along their outer edges and extenting upward and inward toward said central support flange to form a U-shaped channel along the outer edges of said bottom side flanges, and second L-shaped flanges formed on the bottom surfaces of said bottom side flanges in the longitudinal direction, said second L-shaped flanges having one flange lying in planes parallel to the plane of said vertical central support flange and the other flange formed at right angles to said first flange extending inwardly, the distance between the outer vertical surfaces of said Lshaped flanges corresponding to the width of said U-shaped base channel; said longitudinal ridge beam being secured to the flat surface of a further U-shaped base channel, said further U-shaped base channel, in turn, being positioned on the top end surfaces of a plurality of upstanding vertical wall stud members to form a vertical support for the ridge beam of a building being constructed; and rafter members for supporting the roof of said building being positioned between said ridge beam and said cap members forming the top edge of an exterior wall, said rafter members being of an I-beam cross-sectional configuration, the height of said rafter members being equal to the perpendicular dimension between the two parallel edges extending from one side of said ridge beam, said U-shaped channel of said ridge beam being notched to accommodate the end of said rafters positioned adjacent said ridge beam, said rafters being rigidly attached to said ridge beam and to said cap to form a stable building structure.