Patent ID: 7980184

Claim:
A foldably constructed force-resisting structure comprising: a top member formed from a top member base panel having a perimeter comprising a plurality of side edges and two diagonally opposed corners, a top member side portion foldably connected to one of said side edges at a side portion fold line, and a top member interior support rib comprising a pair of rib panels having inner side edges interconnected at a crest fold line and outer side edges connected to said top member base panel at respective base fold lines, the crest fold line extending between the diagonally opposed corners of said top member base panel, the rib panels being folded into overlapping relation substantially perpendicular to said top member base panel with the base fold lines adjacent one another, the top member side portion being folded to a position substantially perpendicular to said top member base panel; a bottom member formed from a bottom member base panel having a perimeter comprising a plurality of side edges and two diagonally opposed corners, a bottom member side portion foldably connected to one of said side edges of said bottom member base panel at a side portion fold line, and a bottom member interior support rib comprising a pair of rib panels having inner side edges interconnected at a crest fold line and outer side edges connected to said bottom member base panel at respective base fold lines, the crest fold line extending between the diagonally opposed corners of said bottom member base panel, the rib panels of said bottom member interior support rib being folded into overlapping relation and substantially perpendicular to said bottom member base panel with the base fold lines of said bottom member interior support rib adjacent one another, the bottom member side portion being folded to a position substantially perpendicular to said bottom member base panel; and said bottom member being assembled to said top member in nested relation, said support ribs in interlocking relation defining an X-shaped support structure disposed between said base panels, and said top member base panel supported on said X-shaped support structure , said top member and said bottom member defining a peripheral side of said force-resisting structure along said perimeters of said base panels and defined at least in part by the side portions, said top member and said bottom member defining an interior between said base panels, said peripheral side of said force-resisting structure having an opening therein providing access to the interior.