1. Ph.D. Candidate, School of Civil and Construction Engineering and Dept. of Wood Science and Engineering, Oregon State Univ., Corvallis, OR 97331.
2. Professor, Dept. of Wood Science and Engineering, Oregon State Univ., Corvallis, OR 97331 (corresponding author).
3. Associate Professor, School of Civil and Construction Engineering, Oregon State Univ., Corvallis, OR 97331.