초록 ▼

Disclosed is a roof anchor system for preventing lifting of a building roof from the walls by high winds for use in building structures having a roof constructed of wood rafters and joists supported by walls and also having a cast concrete foundation footing with at least one perimetric reinforcing

Disclosed is a roof anchor system for preventing lifting of a building roof from the walls by high winds for use in building structures having a roof constructed of wood rafters and joists supported by walls and also having a cast concrete foundation footing with at least one perimetric reinforcing bar therein. The roof rafters and joists are connected to each other and anchored to the foundation for preventing lifting of the roof from the walls during high winds. The roof anchor system comprises a plurality of identical rafter connectors, a connector being attached to every rafter of the roof. A horizontal tie bar extends through all rafter connectors on a side of the building. A plurality of identical metal T-shaped reversible couplings is evenly spaced along the horizontal tie bar and a second plurality of reversible couplings is cast within the concrete foundation footings, each coupling being spaced along the reinforcing bar directly under a corresponding coupling on the horizontal tie bar. A vertical upper tie bar is connected to each of the upper plurality of reversible couplings whereas a vertical lower tie bar is connected to each of the lower plurality of reversible couplings such that the upper ends of the lower tie bars are in spaced facing relationship with the lower ends of corresponding upper tie bars. An adjusting coupling is connected between the facing ends of the upper and lower vertical tie bars whereby the connected-together roof rafters and joists are effectively anchored to the building foundation. Adjusting tension of the pair of vertical tie bars connected by each adjusting coupling may be accomplished by rotating the adjusting coupling.

대표청구항 ▼

A roof anchor system for use in building structures having a roof constructed of wood rafters and joists supported by walls and also having a cast concrete foundation footing with at least one perimetric reinforcement bar therein, whereby the roof rafters and joists are connected to each other and a

A roof anchor system for use in building structures having a roof constructed of wood rafters and joists supported by walls and also having a cast concrete foundation footing with at least one perimetric reinforcement bar therein, whereby the roof rafters and joists are connected to each other and anchored to the foundation for preventing lifting of the roof from the walls by high winds, the roof anchor system comprising: a plurality of identical rafter connectors whereby every rafter in the roof may be attached to the roof anchor system, each rafter connector comprising a downwardly opening rectangular channel formed of sheet metal, the sides of the channel having longitudinally essentially roof pitch complimentary angled ends thereon, the channel also having an essentially central lateral hole through both sides thereof, a rafter connector adapted to be placed over each rafter at the point where the rafter overlies the wall such that the channel brackets the top and sides of the rafter; a plurality of identical metal T-shaped reversible couplings, each reversible coupling comprising a tubular horizontal member having a smooth bore therethrough, the horizontal member also having an integral vertical tubular member extending therefrom centrally intermediate the ends thereof, the vertical member having a right-hand threaded bore therethrough, a lower plurality of evenly spaced apart reversible couplings adapted to be cast within the concrete foundation footings, the lower plurality of reversible couplings being disposed along the reinforcement bar within the footing such that the reinforcement bar passes through the smooth bores of the reversible couplings whereby the reversible couplings are retained on the reinforcement bar, the vertical member of the reversible couplings projecting upwardly from the reinforcement bar to extend slightly above the top surface of the footing; a plurality of identical horizontal tie bars, each horizontal tie bar comprising an elongated metal rod having right-hand external threads formed on both ends thereof, a horizontal tie bar extending through the lateral holes in the rafter connectors, the horizontal tie bar also extending through the smooth bores of an upper plurality of evenly spaced apart T-shaped reversible couplings such that the reversible couplings\vertical member depends downwardly therefrom, each of the upper plurality of reversible couplings being positioned along the horizontal tie bar spaced directly above a corresponding coupling of the lower plurality of T-shaped reversible couplings; a plurality of identical vertical upper tie bars, each upper tie bar comprising an elongated metal rod having an upper end with right-hand external threads formed thereon and a lower end with left-hand external threads formed thereon, the lower end also having LH marked thereon whereby a user may easily recognize the thread orientation of that end, the upper end of an upper tie bar being threadedly engaged with the downwardly depending threaded bore of each of the upper plurality of reversible T-shaped couplings such that the upper tie bars depend downwardly from the reversible couplings; a plurality of identical vertical lower tie bars, each lower tie bar comprising an elongated metal rod having right-hand external threads formed on both ends thereof, the lower end of a lower tie bar being threadedly engaged with the upwardly projecting threaded bore of each of the lower plurality of T-shaped reversible couplings extending from the foundation footing such that the upper ends of the lower tie bars are in spaced facing relationship with the lower ends of corresponding upper tie bars; a plurality of identical adjusting couplings, each adjusting coupling comprising an elongated metal hexagonal nut having an upper end with left-hand internal threads formed therein and a lower end with right-hand internal threads formed therein, the upper end also having UP8 marked thereon whereby the user may easily recognize the direction of thread orientation of that end, the upper end of an adjusting coupling being threadedly engaged with the lower end of each of the vertical upper tie bars, the lower end of an adjusting coupling being threadedly engaged with the upper end of each adjacent vertical lower tie bar whereby rotating the adjusting coupling in one direction relative the vertical tie bars draws the tie bar ends closer together for increasing tension on the tie bars whereas rotating the adjusting coupling in the other direction relative the vertical tie bars forces the tie bar ends farther apart for decreasing tension on the tie bars; a plurality of identical metal T-shaped splicing couplings whereby two horizontal tie bars may be joined for increased length, each splicing coupling comprising a tubular horizontal member having a right-hand threaded bore therethrough, the horizontal member also having an integral vertical tubular member extending therefrom centrally intermediate the ends thereof, the vertical member having a right-hand threaded bore therethrough, the splicing coupling horizontal member being threadedly engaged at each end with the threaded end of a horizontal tie bar; and a plurality of identical metal T-shaped corner couplings whereby a vertical upper tie bar may be connected to a horizontal tie bar in confined locations adjacent closely spaced apart rafters, each corner coupling comprising a rectangular horizontal member having a smooth bore therethrough, the horizontal member also having an integral vertical tubular member extending therefrom centrally intermediate the ends thereof, the vertical member having a right-hand threaded bore therethrough, the horizontal member of a corner coupling being engaged with a horizontal tie bar such that the tie bar extends through the smooth bore of the horizontal member.