MARK-EQUIPPED CYLINDRICAL PAPER FORM

PROBLEM TO BE SOLVED: To facilitate the indexing of an erecting position of a cylindrical paper form to easily and accurately position a cutout for a beam form. SOLUTION: This cylindrical paper form 1 is composed of a cylindrical paper pipe and allows concrete placing inside the paper form 1 to construct a cylindrical structure. Both peripheral face end parts of the paper pipe are previously provided with marks 7 positioned on lines parallel to the axis of the paper pipe at 90 deg. intervals in the peripheral direction of the paper pipe. Because the marks 7 are provided, the paper form 1 can be erected on a prescribed position on site by only aligning the marks 7 of the paper pipe lower end part with reference lines 5 of a foundation 4, and the cutouts 3 for the beam form can be formed in accurate positions with the marks 7 of the paper pipe upper end part as start points to align orthogonal beam centers 6 with prescribed directions.