PURPOSE: A rail device of a gang form for construction is provided to stably lift a gang form since the front and rear surfaces of a rail gang-formed through a spacer is supported between a guide shoe and a bracket. CONSTITUTION: A rail device(110) of a gang form for construction comprises a guide shoe(120), a bracket(140), a rail(160), and a spacer(170). The guide shoe is detachably fixed through an anchor(201) installed on the outer wall of a building and guides the vertical movement of the rail. The bracket is hook-coupled to each guide shoe. The bracket supports the stable vertical movement of the rail. The rail is installed between the guide shoe and the bracket. The rail is installed so that the front and rear surfaces of the rail are supported on each guide shoe and the bracket.
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