Air-handling systems for control of smoke movement

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ConferenceProceedings on the Symposium on Fire Hazards in Buildings: 19 January 1970, San Francisco, CA, U.S.A.
Pages1419; # of pages: 6
Subjectsmoke; stack effect; pressurization; vent outlets; building technical equipment; Smoke management
AbstractIn the event of a fire, smoke migrates from the fire floor to upper floors mainly through vertical shafts, such as stairwells and elevators. When the air-handling system is off, air ducts can also act as passageways for smoke. Exhausting air from a vertical shaft by natural or mechanical means during a fire, if adequate, eliminates the shaft as a vehicle for smoke spread but makes it untenable. If vertical shafts are pressurized, entry of smoke into them is prevented and they therefore provide a smoke-free escape route and the transfer of smoke from one floor to another is minimized. Areas designated as "refuge areas" can be kept tenable by pressurization with mechanical fans. By pressurizing the whole building and venting the fire floor to outside, smoke can be prevented from spreading into adjacent areas.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NotePresented at the 1970 ASHRAE Semiannual Meeting, San Francisco, CA, USA, Jan 19-22, 1970
Peer reviewedYes
NRC number12017
NPARC number20375367
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Record identifier79ebe398-0672-4da6-81e7-91f9e83c192c
Record created2012-07-23
Record modified2016-05-09
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