1. Research Fellow, Timber and Composite Construction, Bern Univ. of Applied Sciences, Solothurnstrasse 102, Biel 2504, Switzerland (corresponding author).
2. Professor, Dept. of Wood Science, Univ. of British Columbia, #4041-2424 Main Mall, Vancouver, BC, Canada V6T 1Z4.
3. Professor, Timber and Composite Construction, Architecture, Wood and Civil Engineering, Bern Univ. of Applied Sciences, Pestalozzistrasse 20, Burgdorf 3401, Switzerland.