| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceiling backing material which is usable to various ceiling structures commonly and is excellent in versatility.SOLUTION: A ceiling backing material 1 includes: an upper side groove part 2 formed in its upper part; and flange parts 8, 9 formed on both side surface parts respectively. The ceiling backing material 1 can be mounted to a suspension bolt suspended from and held by an upper story floor slab via a metal fitting 6 engaged with the upper side groove part 2, and a ceiling panel can be arranged on the flange parts 8, 9. Thereby, various ceiling structures can be easily constructed. |
