Are You Properly Specifying Materials? By Charles J. Carter, PE Part one in a three-part series: structural shapes. (Appended with Technical Bulletin 3) Off The Beam By Scott Melnick Site, Time Restraints Complicate Bridge Rehabilitation By Thomas J. Westerman, P.E. A 180' double-track truss had to be replaced with only a 54-hour track closure. Steel Pays Off For Payroll ProducerBy Daniel F. Marquardt, S.E., P.E. Structural reinforcement allowed ADP to convert an old office building News Briefs Steel Quiz Steel Interchange