TY - JOUR
T1 - Flexural Behaviour and Design of Cold-Formed Steel Wall Panels Sheathed with Particle Cement Board
AU - Selvaraj, Sivaganesh
AU - Madhavan, Mahendrakumar
N1 - Funding Information:
The investigation reported in this paper was funded by the Science Engineering and Research Board (SERB) Research Grant (SB/S3/CEE/046/2014) from the Department of Science and Technology (DST), Government of India. The first author would like to acknowledge the financial assistance received from this project. The authors would like to gratefully acknowledge Pennar Engineered Building Systems Ltd. Hyderabad for their help in fabricating the required test specimens. The authors would also like to thank Building Materials Technology and Promotion Council (BMTPC), Ministry of Housing and Urban Affairs, Government of India for providing an opportunity to observe and evaluate the construction techniques adopted in a multistoried cold-formed steel housing system.
Funding Information:
The investigation reported in this paper was funded by the Science Engineering and Research Board (SERB) Research Grant ( SB/S3/CEE/046/2014 ) from the Department of Science and Technology (DST), Government of India. The first author would like to acknowledge the financial assistance received from this project. The authors would like to gratefully acknowledge Pennar Engineered Building Systems Ltd., Hyderabad for their help in fabricating the required test specimens. The authors would also like to thank Building Materials Technology and Promotion Council (BMTPC), Ministry of Housing and Urban Affairs, Government of India for providing an opportunity to observe and evaluate the construction techniques adopted in a multistoried cold-formed steel housing system.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/11
Y1 - 2019/11
N2 - The bracing effect of Particle Cement Board (PCB) sheathing for the Cold-formed steel (CFS) wall stud is explored in this study. Owing to the higher slenderness, the CFS wall stud requires additional bracing to inhibit the instability failures such as flexural and lateral torsional buckling. Twenty sheathed CFS wall studs were tested to investigate the structural effect of PCB sheathing under out-of-plane loading. The key design factors such as sheathing arrangements (screw spacing and sheathing thickness) and slenderness of the CFS studs were examined. The experimental results indicated that the CFS studs with vulnerability to fail in both local buckling (fcrl << fy) and LTB (fcre << fy) can be effectively braced by particle cement board sheathing. The experimental results, together with the failure modes of the sheathed CFS studs were compared with the predicted strengths using the latest sheathing braced design rules. The critical elastic buckling stresses corresponding to different failure modes for the direct strength method (DSM) of CFS structural member design were determined using the latest modified rule. The latest sheathing braced design rules accurately predicted the failure modes of the PCB sheathed CFS stud. However, the design moment capacities predicted by the latest sheathing braced design rules are overly conservative compared to the experimental moment capacities. The reasons pertaining to the over conservative design predictions are discussed. A set of preliminary suggestions to effectively codify the design rules for the CFS wall panels are given.
AB - The bracing effect of Particle Cement Board (PCB) sheathing for the Cold-formed steel (CFS) wall stud is explored in this study. Owing to the higher slenderness, the CFS wall stud requires additional bracing to inhibit the instability failures such as flexural and lateral torsional buckling. Twenty sheathed CFS wall studs were tested to investigate the structural effect of PCB sheathing under out-of-plane loading. The key design factors such as sheathing arrangements (screw spacing and sheathing thickness) and slenderness of the CFS studs were examined. The experimental results indicated that the CFS studs with vulnerability to fail in both local buckling (fcrl << fy) and LTB (fcre << fy) can be effectively braced by particle cement board sheathing. The experimental results, together with the failure modes of the sheathed CFS studs were compared with the predicted strengths using the latest sheathing braced design rules. The critical elastic buckling stresses corresponding to different failure modes for the direct strength method (DSM) of CFS structural member design were determined using the latest modified rule. The latest sheathing braced design rules accurately predicted the failure modes of the PCB sheathed CFS stud. However, the design moment capacities predicted by the latest sheathing braced design rules are overly conservative compared to the experimental moment capacities. The reasons pertaining to the over conservative design predictions are discussed. A set of preliminary suggestions to effectively codify the design rules for the CFS wall panels are given.
KW - Bracing effect
KW - Cold-formed steel
KW - Direct strength method
KW - Experiments
KW - Sheathed wall panels
KW - Sheathing stiffness
UR - http://www.scopus.com/inward/record.url?scp=85071986185&partnerID=8YFLogxK
U2 - 10.1016/j.jcsr.2019.105723
DO - 10.1016/j.jcsr.2019.105723
M3 - Journal article
AN - SCOPUS:85071986185
SN - 0143-974X
VL - 162
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 105723
ER -