Editor’s note: For further reference, consult Building Construction for the Fire Service, Third Edition (BCFS3). Page numbers, where applicable, are included after the caption.
▲ Since it is likely that these buildings have a common cockloft, in an actual fire, this should be considered all one building. The structures on either side of the fire building would no more be exposures than a dining room would be in relation to a fire in the living room. However, operationally, designate these structures as exposures, to place units in the proper locations. Open up the roof with trench cuts, and get lines into the exposures on either side of the fire building.
一块砖的标准宽度,wood-joisted康门cial building was 25 feet. Since modern stores require more room, the ground-floor masonry walls of both buildings were removed. The hidden walls of upper floors are supported by a beam-and-column arrangement, which is vulnerable to fire-caused collapse. If the upper floors of adjacent buildings are connected, the usual practice is to make an opening through the wall and install an automatic fire door, which should close when fire melts a fusible link. Don’t pass through a fire door-protected opening without chocking the door. Even if only light smoke is showing, a sudden flareup may activate the door and imprison firefighters. Overhead rolling fire doors sometimes have an escape door nearby; determine this during a prefire survey. Fire doors may often be found chocked open-this is a major violation! Issue a citation, and write a letter explaining the hazard to building management (See BCFS3, 195-196).
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