1. Pres., JMBT Structures Research Inc., Toronto, ON, Canada M1V 3G1.
2. Sr. Engr. (Retired), Ministry of Transp. of Ontario, Downsview, ON Canada M3M 1J8.
3. Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, BC, Canada V6T 1Z4.
4. Dir. Technology, Public Works Canada, Ottawa, ON, Canada K1A 0S5.
5. Prof., Dept. of Civ. Engrg., Royal Military Coll. of Canada, Kingston, ON, Canada K7K 7B4.