| 摘要 |
PURPOSE:To reduce a repairing work expenditure required for a self-weight of a large-sized duct installed within a building or adjacent to the building, its earthquake load and wind load and the like. CONSTITUTION:A large-sized duct 1 is installed near columns 2 or beams 3 of a building. These building members 2, 3 and the like and the large-sized duct 1 are fixed and connected at an optional position A. At other positions than the above, they are coupled in such a manner that they can be moved in a thermal expanding direction. |
