| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling structure in which a plurality of ribbed ceiling finishing materials are provided side by side on the lower side of a ceiling backing material, and which achieves a good appearance by avoiding fixtures such as nails and machine screws from being exposed to the ceiling finished surface.SOLUTION: Ceiling finishing materials 10 each include a plurality of rib members 12 fixed to the lower face of a rectangular base plate 11. A first overhanging piece 14 is formed at one end of the base plate 11 and a second overhanging piece 16 is formed at the other end of the base plate 11, and so a recessed groove 18 is formed between the first overhanging piece 14 and an extension part 17 of the one-end-side rib member 12A. Into the recessed groove 18 of one of the adjacent ceiling finishing materials 10, 10, the second overhanging piece 16 of the other ceiling finishing material 10 is inserted so that the head of a nail 40 with which the first overhanging piece 14 of one ceiling finishing material 10 is anchored to a ceiling backing material 1 is covered with the second overhanging piece 16 of the other ceiling finishing material 10. |
