Self-sustaining collapsible building structure

Claim 1

IN A BUILDING CONSTRUCTION COMPRISING A PAIR OF OPPOSED SIDE PANELS AND A PAIR OF OPPOSED ROOF PANELS, WHEREIN THE PANELS ARE COMPOSED OF A PLURALITY OF METALLIC EXTRUSIONS ARRANGED SIDE BY SIDE AND HAVING SNAP-IN INTERLOCK CONNECTIONS WITH ONE ANOTHER, THE EXTRUSIONS HAVING WEBS ON ONE SIDE FORMING A CONTINUOUS OUTER SURFACE FOR THE PANELS, THE OTHER SIDE HAVING STRENGTHENING FLANGES INTEGRAL THEREWITH EXTENDING INWARDLY FROM THE WEB, A CONNECTION BETWEEN THE ROOF PANELS DISPOSING THEM AT A PITCH OPPOSITELY INCLINED TO THE HORIZONTAL AND PIVOTAL CONNECTING MEANS ATTACHED BETWEEN A STRENGTHENING FLANGE OF THE SIDE PANELS AND A STRENGTHENING FLANGE OF AN ADJOINING ROOF PANEL DISPOSING THE SIDE WALLS GENERALLY VERTICALLY, SAID PIVOTED CONNECTING MEANS ALLOWING THE WALL PANEL TO SWING INTO A POSITION GENERALLY CONFORMING TO THE ROOF PANELS SO AS TO FORM A COMPACT SELF-CONTAINED SHIPPING UNIT WHICH CAN BE READILY ERECTED AT A BUILDING SITE TO FORM A SELF-SUSTAINING BUILDING STRUCTURE.