| 摘要 |
PROBLEM TO BE SOLVED: To provide a throating structure that prevents a harmful effect such as formation of a crack by reducing thickness of cover concrete of an internal reinforcement in a ceiling section of reinforced concrete construction.SOLUTION: A throating recessed groove is formed in an area exceeding a reference dimension of thickness of cover concrete of a reinforcement of a ceiling section. Thus, the harmful effect of reducing the thickness of the cover concrete of the reinforcement to the reference dimension or below is prevented by the presence of the throating recessed groove, and the reinforcement of the ceiling section does not rust as ever. The recessed groove can be easily formed by a method for attaching a recessed groove forming body to a form area exceeding the reference dimension of the thickness of the cover concrete. Furthermore, a protruding wall for damming up a water flow can also be provided on a ceiling surface in place of the recessed groove. |
