PDF《ctbuh.org/papers》

799 As cities rebuilt and multi-story buildings were erected, architects and designers focused on the ways of incorporating more effective fire and life safety protection into buildings. For example, fire sprinkler systems date back to the early 1800'

s in London. In the United States, fire sprinklers were installed in the late 1800s to protect factories that routinely had fires. The first fire sprinkler system consisted of perforated pipes, later sprinklers heads with fusible elements were developed similar to the ones in use today. The use of fire doors also dates back to the late 1800s. The first fire doors were constructed out of wood and later wood that was tin-clad. These were used to protect openings in factory walls that formed partitions between storage and office areas. These partitions formed fire compartments........