| 摘要 |
PROBLEM TO BE SOLVED: To prevent a connection part of a ceiling backing material from being deformed in an earthquake.SOLUTION: A ceiling reinforcement metal fitting 1 having a main plate part 20 orthogonally crossing above a first ceiling backing material 2a, a first suspending plate part 21 suspended to the side of one second ceiling backing material 2ba from the main plate part 20, a support plate part 24 butting against a base end part 42a of a connection insertion part 42 of one second ceiling backing material 2ba by extending in the longitudinal direction of the one second ceiling backing material 2ba from the first suspending plate part 21 and a second suspending plate part 22 fixed to a side surface of another second ceiling backing material 2bb by suspending to the side of the other second ceiling backing material 2bb from the main plate part 20, in a part for connecting the ceiling backing materials 2a, 2ba and 2bb, is installed by respectively inserting a connection insertion part 42 extending in the orthogonal direction from the edge of the second ceiling backing materials 2ba and 2bb, to a fitting-insertion groove 41 formed on both side surfaces of the first ceiling backing material 2a. |
