| 摘要 |
PROBLEM TO BE SOLVED: To provide a stair installation method, by which a structure is easily simplified and a stair unit is early and easily secured as a passage for work.SOLUTION: A stair unit B made of precast concrete includes: an upper end part 2 supported by an upper end support part 4 of a structure A; and a lower end part 3 supported by a lower end support part 8 of the structure A. In a stair installation method, the upper end part 2 is rigidly joined with the upper end support part 4 and the lower end part 3 is supported by the lower end support part 8 via a slide bearing 9. Against movement of the lower end part 3 in a direction in which the upper end part 2 mounted on the upper end support part 4 falls off from the upper end support part 4, a propping tool 11 performing propping action from downstream of the movement direction is installed across the lower end part 3 and a reaction receiving part 12 of the structure A. |
