| 摘要 |
Metal chimney and metal air duct in multi-story buildings shown in fig. 1 are made of metal ducts (1) and (2) passing openings (3) made in inter-story boards (4). Metal duct (2) of a chimney resp. duct is connected with the inter-story board (4) by means of two-part metal annular clip (5) that is tightened to a duct (2) and which arms (8) are tightened by screws (10) to the upper surface of the inter-story board (4). Gaps between the thermal panelling of a duct (2) and edges of the opening (3) in inter-story boards (4) are closed by concrete slips (11). Round insulated metal ducts, on free, visible surfaces of a chimney resp. duct there is put the exterior panelling. The exterior panelling has the form of a prism shell which basis has the form of closed or open regular or irregular polygon in which interior corners there are put vertical metal supports (12) which ends are fastened to the floor and ceiling inter-story board (4) of a room and to which there are by screws fastened one or more layers of plaster boards (13). |
