CEILING STRUCTURE AND FIXING METAL FITTING FOR BRACE MATERIAL AND CEILING FINISH BOARD

PROBLEM TO BE SOLVED: To provide a ceiling structure and a fixing metal fitting for brace material and ceiling finish board capable of improving bearing force and rigidity against a force in the horizontal direction, with a simple structure.SOLUTION: A ceiling structure 100 is provided with a suspension bolt 1 suspended from an upper-floor floor slab S, a ceiling backing material 2 hung on the suspension bolt 1 and supported thereby, a ceiling finish board 3 which is installed in the ceiling backing material 2 and constitutes the ceiling surface, a brace material 4 laid obliquely between any one of the upper-floor floor slab S and the upper end of the suspension bolt 1 and the ceiling finish board 3, and a fixing metal fitting 5 for fixing the ceiling finish board 3 and the brace material 4. The fixing metal fitting 5 has an upper side fixing member 51 which is arranged at the upper part of the ceiling finish board 3 and which fixes the lower end of the brace material 4, a lower side fixing member 52 arranged at the lower part of the ceiling finish board 3, and a fastening member 53 for integrally fastening and fixing the ceiling finish board 3, the upper side fixing member 51, and the lower side fixing member 52 as the ceiling finish board 3 is sandwiched between the upper side fixing member 51 and the lower side fixing member 52.