Seismic Site Classification for Structural Engineers Dec, 2006 By Dominic J. Kelly, P.E. In Feature This article is currently only available in PDF format, please click the link to the top right. About the author ⁄ Dominic J. Kelly, P.E.Dominic Kelly, P.E. is an Senior Principal with Simpson Gumpertz & Heger Inc. located in Waltham, MA (DJKelly@sgh.com). Prev Recent Developments in Post-Earthquake Investigations Next The Seattle Pine Street Tunnel