| 摘要 |
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.
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