1. Assistant Professor, Dept. of Food, Agricultural, and Biological Engineering, The Ohio State Univ., Columbus, OH 43210 (corresponding author).
2. Assistant Professor, Dept. of Building Construction, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.
3. Director, Myers-Lawson School of Construction, Virginia Polytechnic Institute and State Univ., Blacksburg, VA 24061.