John G.Everett Asst. Prof. of Civ. and Envir. Engrg., Univ. of Michigan, 2352 G. G. Brown, Ann Arbor, MI 48109-2125.
HasanHalkali Proj. Engr., Keating Building Corp., One Bala Ave., Bala Cynwyd, PA 19004; formerly, Grad. Student, Dept. of Civ. and Envir. Engrg., Univ. of Michigan, 2352 G. G. Brown, Ann Arbor, MI.
Thomas G.Schlaff Dir. of Constr. Mgmt., Univ. of Michigan, 326 E. Hoover St., Ann Arbor, MI 48109-1002.