| 摘要 |
PURPOSE: To construct a high quality stairs without skillful techniques in the site works. CONSTITUTION: In a precast concrete stairs in which cantilever beam type stairs are united together between a pair of columns, the columns are made of cast-in-place concrete columns 1 in which main reinforcements are arranged. The stairs 2 is constituted of a plurality of PC stairs 3 provided with a step floor, a stair beam 5 formed as a unit along one side face of the step floor, beam main reinforcements protruded from the longitudinal both end faces of the stair beam 5, and step floor anchor reinforcements protruded from the upper and lower stages of the step floor. In respective PC stairs 3 arranged along the cast-in-place concrete columns 1, the beam main reinforcements protruded from both end faces of the stair beam 5 are anchored in the cast-in-place concrete columns 1. And also the step floor anchor reinforcements protruded from the step floor are anchored in the cast-in-place concrete columns. |
