1. Structural Designer (EIT), Cohos Evamy Integratedesign, Calgary, AB, Canada T2G 0X5.
2. Structural Designer (EIT), Dillion Consulting Limited, London ON, Canada N6A 5R2.
3. Professor, Dept. of Civil and Environmental Engineering, Associate Director, Canadian Cold-Formed Steel Research Group, Univ. of Waterloo, 200 University Ave. W., Waterloo ON, Canada N2K 4C8 (corresponding author).