Have an attendance code? Sign In to enter it. This live web event has ended. Thank you for attending. Contributors Douglas Thompson, S.E., SECB Douglas Thompson, S.E., SECB, is president of STB Structural Engineers, Inc. in Lake Forest. He is a past president of the Structural Engineers Association of Southern California and is a registered PE, SE in 6 states. He has authored several articles and publications, including the light-frame design examples in the Seismic Design Manuals, the Guide to the Design of Diaphragms, Chords and Collectors, The Design of Common Irregularities in Buildings and Four-story/Five-story Wood-frame Structure over Podium Slab. He has been involved with code changes to the UBC and IBC for over 30 years and is a member of the Wood Design Standards Committee, the Wind and Seismic Task Committees with the American Wood Council.