Patent ID: 6920721

Claim:
A combined chassis and floor system for use in off-site factory built structures comprising: a pair of parallel interior longitudinal beam members having an upper surface defining a common plane, a pair of end perimeter members joined to ends of the interior longitudinal beam members, the end perimeter members extending laterally beyond the interior longitudinal beam members, and extending above the common plane, a pair of longitudinal perimeter members joined to ends of the end perimeter members to form with the end perimeter members a rectangular perimeter assembly, ledger members fixed to an inner surface of the longitudinal perimeter members, the ledger members having an upper surface lying in said common plane, a plurality of metal floor joists extending laterally between the longitudinal perimeter members, the metal floor joists having a lower surface lying in said common plane and an upper surface lying in a plane defined by upper surfaces of the end and longitudinal perimeter members, and a plurality of metal vertical tension members extending perpendicularly to said common plane, each of the vertical tension members including an upper end projecting through a top plate of a perimeter wall, the top plate including a metal reinforcement member including a central opening receiving the vertical tension member upper end.