Fire resistance of loadbearing LSF assemblies

[admin]

Fire resistance of loadbearing LSF assemblies

By Farid Alfawakhiri1 and Mohamed A. Sultan2

A version of this paper was presented at the 15th International Specialty Conference on Cold-Formed Steel Structures, St. Louis, MO, U.S.A., October 2000

Institute for Research in Construction, National Research Council Cana

ABSTRACT

This paper presents an analytical thermal-structural model for loadbearing lightweight steel framed (LSF) walls exposed to fire on one side. The model reflects temperature and deformation data from six standard fire resistance tests conducted recently by the National Research Council of Canada in partnership with the North American steel industry. Some characteristic patterns in thermal transmission and structural behaviour are discussed. Temperature histories across LSF assemblies are simulated numerically by explicit integration of transient heat transfer equations. The apparent thermal properties are calibrated for gypsum board and three types of insulation. Analytical procedures are presented to simulate lateral deformation histories and predict structural failure times. The model illustrates how different heating regimes in cold formed steel studs cause different structural failure modes.

 

به نقل از کانال تلگرام 

Hidden Content

Give reaction or reply to this topic to see the hidden content.

دانلود از پیوست

 

Hidden Content

Give reaction or reply to this topic to see the hidden content.