초록 ▼

Off-site factory built structure employs a chassis including two interior longitudinal beam members joined at their ends to a perimeter structure. A floor system is integrated within the chassis perimeter. A ledger member is fixed to the inner surface of each longitudinal perimeter member so that a

Off-site factory built structure employs a chassis including two interior longitudinal beam members joined at their ends to a perimeter structure. A floor system is integrated within the chassis perimeter. A ledger member is fixed to the inner surface of each longitudinal perimeter member so that a top surface lies in a plane coincident with top surfaces of the interior longitudinal beams. Lateral members are coupled to the tops of the interior longitudinal beams and to the top of the ledger members. The lateral members include secondary stiffening members such as C-channel members, metal Z-channel members, or other metal members of similar structural capacity, spaced apart from each other by a maximum distance S, related to the width of the floor system W, by the equation:S 12?½W.

대표청구항 ▼

1. 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 peri

1. 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. 2. The combination of claim 1 wherein each metal tension member has a lower end fixed to one of the metal floor joists adjacent to a longitudinal perimeter member.3. 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 an additional plurality of wood floor joists arranged between and parallel to the metal floor joists. 4. The combination of claim 3 wherein the maximum spacing S, between the metal floor joists is related to their lateral extent W, by the equation:S 12?½W. 5. The combination of claim 3 wherein one of the additional plurality of wood floor joists is arranged in contiguously abutting relation to each metal floor joists.6. The combination of claim 5 further comprising means coupling the contiguously abutting wood floor joists and metal floor joists.7. The combination of claim 1 further comprising means for securing the ends of the floor joists to at least one of the longitudinal perimeter members and the ledger members fixed thereto.8. The combination of claim 1 wherein said interior longitudinal beam members and said longitudinal perimeter members consist essentially of laminated veneer lumber.9. 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 U-shaped channel members enveloping the sides and lower surface of at least a portion of the interior longitudinal beam members, the channel members including laterally outwardly extending flanges. 10. An off-site factory built structure including a combined chassis and floor system 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, floor joists extending laterally between the longitudinal perimeter members having a lower surface lying in said common plane and an upper surface lying in a plane defined by upper surfaces of the perimeter members, and a plurality of secondary stiffening members arranged parallel to the floor joists, the maximum spacing S, between the secondary stiffening members being related to their lateral extent W, by the equation: S 12?½W. 11. The off-site factory built structure of claim 10 further comprising U-shaped channel members enveloping the sides and lower surface of at least a portion of the interior longitudinal beam members, the channel members including laterally outwardly extending flanges.12. The off-site factory built structure of claim 11 further comprising a running gear mechanism coupled to the U-shaped channel members enveloping the interior longitudinal beam members near one end of the chassis.13. The off-site factory built structure of claim 12 wherein the running gear mechanism comprises:a pair of longitudinal support members spanned by a plurality of lateral support members that space the longitudinal support members by a distance about equal to the separation distance between the interior longitudinal beam members, and a plurality of axels, each axel being fixed to a pair of leaf springs, the leaf springs being located under and coupled to the longitudinal support members. 14. The off-site factory built structure of claim 11 further comprising a tow hitch coupled to the U-shaped channel members enveloping the interior longitudinal beam members near one end of the chassis.15. The off-site factory built structure of claims 14 wherein the tow hitch comprises:a lateral rear member underlying one of said secondary stiffening members, and two angled forwardly extending members coupled together with the lateral rear member to form an isosceles triangle, the length of the two angled forwardly extending members being sufficient to extend from the lateral rear member to a point outside the perimeter defined by one of said end perimeter members, the angled forwardly extending members being coupled to the U-shaped channel members enveloping the interior longitudinal beam members near one end of the chassis. 16. The off-site factory built structure of claim 10 further comprising sheeting fixed to said perimeter members and to said floor joists defining a top surface of the floor system, the sheeting including a panel that is designed for easy removal to permit ready access to any utility or mechanical elements placed below the top surface of the floor system, and a vapor retarder fixed to the perimeter members and the interior longitudinal beam members to enclose the floor system below the top surface.17. The off-site factory built structure of claim 10 further comprising a perimeter wall constructed on top of the floor system including two longitudinal sidewalls having a top plate, each longitudinal sidewall including two vertical steel rods extending upward through the walls, each rod having a lower end fixed to one of said secondary stiffening members and an end emerging through the top plate of the perimeter wall.18. The off-site factory built structure of claim 17 further comprising steel plates having a central opening fixed to a top surface of the top plate so that the upper end of each vertical steel rod emerges through one of the central openings.19. The off-site factory built structure of claim 17 further comprising vertical compression members included in the perimeter wall and diagonal tension members having an upper end coupled to an upper end of one of the vertical compression members and a lower end coupled to one of said longitudinal perimeter members.