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Article 6.1.5 of jgj231-2010 is mandatory:


The cantilever length of adjustable bracket of formwork support extending out of the top layer or double channel steel joist shall not exceed 650mm, and the exposed length of screw rod shall not exceed 400mm, and the length of adjustable bracket inserted into upright or double channel steel joist shall not be less than 150 mm.


Article 6.1.7 of jgj231-2010 stipulates:


The cantilever length of adjustable bracket of formwork support extending out of the top layer or double channel steel joist shall not exceed 650mm, and the exposed length of screw rod shall not exceed 400mm, and the length of adjustable bracket inserted into upright or double channel steel joist shall not be less than 150 mm.
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Article 6.1.5 of jgj231-2010 is mandatory:


The cantilever length of adjustable bracket of formwork support extending out of the top layer or double channel steel joist shall not exceed 650mm, and the exposed length of screw rod shall not exceed 400mm, and the length of adjustable bracket inserted into upright or double channel steel joist shall not be less than 150 mm.


Article 6.1.7 of jgj231-2010 stipulates:


The cantilever length of adjustable bracket of formwork support extending out of the top layer or double channel steel joist shall not exceed 650mm, and the exposed length of screw rod shall not exceed 400mm, and the length of adjustable bracket inserted into upright or double channel steel joist shall not be less than 150 mm.

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