| 摘要 |
PROBLEM TO BE SOLVED: To provide ceiling joist structure capable of sufficiently supporting a joist without transmitting the vibration of the floor part of an upper story even when the joist of a long span is set up on a construction composed by a wooden building member. SOLUTION: Ceiling joist structure is fixed on a steel-made ceiling joist bracket 3 set so that a steel-made joist 6 attaching a ceiling material on a lower part is orthogonal to another steel-made joist 6, and steel-made ceiling joist bracket 3 is supported by a steel-made hanging beam 2 horizontally erected between the wall bodies of the construction. The steel-made ceiling joist bracket 3 is attached to the steel-made hanging beam 2 through a ceiling joist bracket 4, and a fixing position of the ceiling joist bracket 4 for the steel-made hanging beam 2 and bolts 44, 45 screwed on an upper member 41 and a lower member 42 upward and downward of the steel-made hanging beam 2 having the ceiling joist bracket 4 respectively can be positioned by being adjusted in the upper and lower directions and the extension direction of the steel-made hanging beam 2. |
