Partition Walls and Their Restraining Effect on Warp in Built-In Wall Studs
Publication: Journal of Structural Engineering
Volume 133, Issue 5
Abstract
The focus is on understanding the behavior of walls with regard to the propensity of studs to warp at different moisture content. Experimental tests on whole wall structures were conducted. The walls were built up using studs of Norway spruce (Picea abies) and cladding made of gypsum wallboard. The tests were performed simulating in-service conditions, i.e., about 35% relative humidity and a temperature of . Tests were conducted with double- and single-sided cladding. Twist and crook were measured on the studs continuously during the tests. The warp of the studs was also measured before and after each test. The double-sided cladding reduced the twist in the studs significantly, by about 75% when compared with twist developed in the same studs when vertically suspended without restraint. The single-sided cladding only slightly reduced the twist, by about 13%, but increased the crook substantially. The value for crook for single-sided cladding was more than double and had reached more than half its final value in less than a week.
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Acknowledgments
The writers would like to thank the sponsors that made this study possible: the SSF Wood Technology Programme and Södra skogsägarnas Foundation for Research, Development, and Education.
References
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Copyright
© 2007 ASCE.
History
Received: Aug 11, 2005
Accepted: Jun 21, 2006
Published online: May 1, 2007
Published in print: May 2007
Notes
Note. Associate Editor: J. Daniel Dolan
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