1. P.E., Member, ASCE
2. P.E.
3. Prin. Engr., Mitretek Systems, 13526 George Rd., San Antonio, TX 78230 (corresponding author).
4. Lead Sci., Mitretek Systems, 7525 Colshire Dr., McLean, VA 22102.
5. Lead Engr., Mitretek Systems, 13526 George Rd., San Antonio, TX 78230.