| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling construction which can be accurately seen through with a simple construction. SOLUTION: Below webs 11 arranged longitudinally, ceiling structural members 4, 5, 6, 10 having flange 12 arranged laterally are intersected and combined, and ceiling board 7 is placed at the upper portion of the flange 1. An upper notch 15 is formed in the first structural member 5, a lower notch 16 is formed in the second structural member 6, and a pair of these ceiling structural members 5, 6 are mutually combined together at these upper notch 15 and the lower notch 16. By fitting the second structural member 6 to the upper notch 15, a horizontal compressive force is allotted to the upper notched portion 15 and also the deformation of the same portion is restricted, and a drop in strength at the first structural member 5 is prevented. Also, by restricting the deformation at the same portion, the drop in the strength in the second structural member 6 due to the installation of the lower notch 16 can be prevented at the same time. |
