is Director of Technical Operations, Wiss, Janney, Elstner Associates, Inc., Northbrook, Illinois. Dr. Hill’s primary area of practice involves evaluation of existing structures and structural failures. His earthquake engineering experience includes numerous damage assessment projects, detailed seismic evaluations of proposed and existing structures, design of comprehensive repair and retrofit programs, and peer reviews. He has lectured extensively on seismic design and performance. He is a member of the Earthquake Engineering Research Institute.