| 摘要 |
A strapping system includes a roof assembly including a plurality of receiving channels; each of the plurality of receiving channels is fastened to interconnected roof materials connected to a roof structure. The roof assembly also includes a plurality of roof channels that are connected by the plurality of receiving channels and fastened to the interconnected roof materials, such that a row of interconnected roof channels and receiving channels is placed over the interconnected roof materials along a length of a roof structure. The strapping assembly also includes a plurality of straps for tying down the roof assembly to a corresponding plurality of anchors, each of the plurality of anchors being secured at predetermined distances at opposite sides of a foundation of a building. The strapping assembly further includes a plurality of tensioning devices mounted, at predetermined distances, on the roof materials between rows of interconnected roof channels and receiving channels, the plurality of tensioning devices being for eliminating vertical displacement of the fastened straps. Each of the plurality of straps is placed at a predetermined distance along the length of the roof structure over rows of interconnected roof channels and receiving channels and is threaded in a corresponding tensioning device that is lined up with a corresponding anchor at the foundation of the building. On opposite sides of the building, each of the plurality of straps is fastened to a corresponding ratchet assembly attached to a corresponding anchor of the plurality of anchors, thereby transferring load from the roof assembly to the foundation of the structure during a high wind storm such as a, hurricane, typhoon, cyclone or a tornado.
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