| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a collective pipe preventing propagation of vibration and noise to fireproof structure supporting the collective pipe, and preventing propagation of vibration and noise to vertical piping and horizontal piping connected to the collective pipe. <P>SOLUTION: The collective pipe A is fixed to the fireproof structure 1 of a fireproof compartment area in a pierced state, and it can be connected to vertical pipes 2, 3 in parallel with a piercing direction and a plurality of horizontal pipes 4 orthogonal to the vertical pipes. It is provided with a main pipe part A1 connectable to the vertical pipes 2, 3 in upward and downward directions, and a collective pipe body A3 formed integrally with a branch pipe part A2 connectable to the plurality of horizontal pipes 4. At least a sound absorbing/fireproof layer A4 and a sound insulating layer A5 are laminated on a whole area or a substantially whole area of an outer surface of the collective pipe body A3. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
