| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing PC stairs for simply molding the PC stairs of different heights or lengths by using the same form. SOLUTION: The method for manufacturing PC stairs comprises the steps of arranging a plurality of stair molding elements 1 each having a tread face molding surface 1a and a rising face molding surface 1b so that the surface 2a and the surface 1b become substantially parallel to each other, rotating the elements 1 at substantially equal angle with respect to a rotary axis passing a predetermined point to meet the length and the height of the stair to be molded and then fixing them, disposing angle members 5 in gaps between the adjacent elements 1, arranging a width direction form 2 and an end member 3, and placing a concrete in a space surrounded by the arranged elements 1 and forms 2, 3.
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