1. Associate Professor, Dept. of Civil, Surveying, and Environmental Engineering, Univ. of Newcastle, NSW 2308, Australia (corresponding author).
2. Richardson Chair in Wood Engineering and Professor of Civil Engineering, Dept. of Wood Science and Engineering, Oregon State Univ., Corvallis, OR 97331-5751.
3. Senior Engineer, Applied Research Associates, 811 Spring Forest Rd., Suite 100, Raleigh, NC 27615.