高层建筑的防火有其特殊性。在高层建筑中有很多设备竖井,加上楼梯间、电梯间和垃圾道,好像几座高耸的烟囱,拔气作用很大,一旦失火,烟雾从底层直升顶层,浓烟弥漫,不易扑灭。由于人流集中,远离地面,很难疏散。因此,在高层建筑的火灾事故中,往往被熏死者甚多,灾情严重。如美国,从1946到1966年,仅是高层旅馆就发生 The fire protection of high-rise buildings has its own particularities. There are a lot of equipment shafts in high-rise buildings, plus stairwells, elevators, and rubbish dumps, like several towering chimneys, which have a large amount of gas extraction. Once a fire breaks out, the smoke rises from the bottom to the top floor, and the smoke is filled with dust and difficult to extinguish. It is difficult to evacuate because people are concentrated and away from the ground. Therefore, in the fire accidents of high-rise buildings, many people are often smoked, and the disaster is serious. In the United States, from 1946 to 1966, it was only a high-rise hotel.