影剧院和礼堂,是供人们集会和开展娱乐活动的场所。主要由舞台、观众厅、配电室、风机室以及演员化妆室、道具布景室、美工室、贮藏室等业务附属用房所组成。它的建筑规模较大,结构复杂,加之使用时人员密集,如果火灾发生在演出、放映和集会期间,往往会由于疏散时秩序混乱、拥挤而造成重大伤亡。 Theaters and auditoriums are places for people to gather and have fun. Mainly by the stage, auditorium, power distribution room, fan room and the dressing room, props set room, art room, storage room and other business subsidiary buildings. Its large-scale construction and complex structure, combined with intensive use of personnel, often result in heavy casualties due to confusion and crowding during evacuation if the fire occurs during performances, screening and assembly.