| 摘要 |
PURPOSE:To increase fireproof function by holding a ceiling plenum partition panel from both sides thereof with a pair of L-shaped mounting metal fittings to fix opposite to each end of a ceiling joist wood and a ceiling joist auxiliary wood to bind and fix it with a fastening member. CONSTITUTION:A pair of opposite bending steel plate mounting metal fittings 17 having L-shaped sections are fixed to both sides of the ends opposed to each other of a ceiling joist wood 16 and a ceiling joist auxiliary wood 16a with a plurality of steel nails 18, etc. After that, spacer steel pipes 20 are respectively inserted into a plurality of mounting holes 19a bored in both sides of the ceiling plenum partition panel 6, the mounting metal fittings 17 are set opposite 50 each other from top of them, and the panel 6 is held from bah sides to fix it with each bolt/nut set 19. Then, fire resisting caulking 22 is made, and a rock wool 23 is mounted. According to the constitution, a ceiling joist penetrating notch is not required, and fireproof function can be increased. |
