1. Graduate Research Assistant, Dept. of Civil Engineering, Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4.
2. Graduate Research Assistant, School of Engineering, Univ. of British Columbia, Kelowna, BC, Canada V1V 1V7.
3. Associate Professor, Dept. of Wood Science and Civil Engineering, Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4.
4. Associate Professor, School of Engineering, Univ. of British Columbia, Kelowna, BC, Canada V1V 1V7 (corresponding author).