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experiment study on smoke movement leading to glass damages in double-skinned facade
C/locate/conbuildmat
Construction and Building Materials 21 (2007) 556–566
and Building
MATERIALSExperimental study on smoke movement leading to glass damages
in double-skinned fac?ade
W.K. Chow a,*, W.Y. Hung a, Y. Gao b, G. Zou b, H. Dong b
a Areas of Strength: Fire Safety Engineering, Research Centre for Fire Engineering, The Hong Kong Polytechnic University, Hong Kong, China
b Department of Building Engineering, Harbin Engineering University, Harbin, Heilongjiang, China
Received 5 January 2005; received in revised form 20 September 2005; accepted 22 September 2005
Available online 7 November 2005Abstract
Fire hazard of the new architectural feature – double-skinned fac?ade 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 fac?ade 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 fac?ade 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.
2005 Elsevier Ltd. All rights reserved.
Keywords: Double-skinned fac?ade; Smoke movement; Cavity; Full-scale burning tes
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