After 9-11

About the Book

The tragic events of September 11, 2001, have forever changed the lives of the individuals and families that were directly affected and have changed history for everyone.

Those same events were the beginning of a 24-hour-per-day, 7-day-per-week effort by structural engineers to investigate the condition of the buildings remaining at the World Trade Center site, to work with the rescue and clean-up crews in evaluating the safety of the towering piles of rubble, and to try to explain what happened to the buildings as they collapsed. After 9-11 describes one engineer’s experiences on site and off as part of that effort.

About the Author

Donald Friedman is Director of Preservation at LZA Technology, a division of the Thornton-Tomasetti Group, Inc., and a graduate in Civil Engineering from Rensselaer Polytechnic Institute. Mr. Friedman’s design and management experience includes integrating modern construction into existing buildings with archaic structural systems, building repair and restoration, and investigation of historic building structure. He is a recognized leader in the field of conservation engineering, teaches engineering of historic buildings at Rensselaer, has spoken at numerous conferences, is the author of Historical Building Construction and The Investigation of Buildings, and co-author of Building the Empire State and The Design of Renovations.