1. Bentley Fellow, Director Applied Research, Bentley Systems, Incorporated, 27 Siemon Co Dr., Watertown, CT 06795 (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Delaware, 360G Dupont Hall, Newark, DE 19716.
3. Formerly, Intern with Bentley Systems, Incorporated, Watertown CT; presently, Software Engineer, Microsoft, 13010 NE 36th St., Redmond, WA 98052.
4. Formerly, Intern with Bentley Systems, Incorporated, Watertown CT; presently, Lecturer, Jabir Ibn Hayyan Medical Univ., Najaf 54001, Iraq.