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Title: Experimental study on smoke movement leading to glass damages in double-skinned façade
Authors: Chow, WK 
Hung, WY
Gao, Y
Zou, G
Dong, H
Issue Date: 2007
Source: Construction and building materials, 2007, v. 21, no. 3, p. 556-566
Abstract: Fire hazard of the new architectural feature - double-skinned façade was examined experimentally. Full-scale burning tests on part of the design feature were carried out in a facility developed in a remote area in Northeast China. A total of eight tests were performed to demonstrate how the depth of cavity of a double-skinned façade affects the smoke movement. Surface temperature and heat flux received on the test panels are presented. Cracking patterns found on the glass panels are also observed. The measured results would give the possible smoke movement pattern inside the air cavity. By examining the results for cavity depth of 0.5, 1.0 and 1.5 m, it is found that a deeper cavity might give better safety under the scenario studied. The outer glass panel would be broken rapidly for the cavity of 0.5 m deep. Double-skinned façade with a cavity of 1.0 m deep appeared to be very risky as glass panels above broke most among the different cavity depths. The inner glass panel might be broken before the outer panel. This would give an undesirable outcome. Other separation distances of the two skins should be further examined to give optimum design of cavity depth. Other factors affecting flame and smoke movement should be further investigated.
Keywords: Cavity
Double-skinned façade
Full-scale burning test
Smoke movement
Publisher: Elsevier
Journal: Construction and building materials 
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2005.09.005
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