1. Member, ASCE
2. Prof., Dept. of Civ. and Envir. Engrg., Univ. of Wisconsin–Madison, Madison, WI 53706.
3. Grad. Res. Asst., Dept. of Civ. and Envir. Engrg., Univ. of Wisconsin–Madison, Madison, WI.
4. Res. Engr., U.S. Dept. of Agr., Forest Service, Forest Products Lab., Madison, WI 53705.