1. CIDA, Inc., 15895 SW 72nd #200, Portland, OR 97224.
2. Dept. of Wood Science and Engineering, Oregon State Univ., 119 Richardson Hall, 3100 SW Jefferson Way, Corvallis, OR 97331.
3. School of Civil and Construction Engineering, Oregon State Univ., 101 Kearney Hall, 14191 Campus Way, Corvallis, OR 97331 (corresponding author).