| 摘要 |
PROBLEM TO BE SOLVED: To provide a jig used on a form timbering enabling partially early demolition on the timbering of a cantilever structure. SOLUTION: An extending column body fitted at the front end of a support is installed at a center in the lower section of a U shape, floor-joist receiving sections receiving a floor joist are formed at both upper ends of U-shaped vertical sides, and longitudinal grooves into which sleeper-receiving wedges are inserted are formed to the vertical sides. The base section of a cantilever structure can be demolished at an early stage by fixing the front end section of the cantilever structure by using the jig, and form materials can be used efficiently.
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