Have an attendance code? Sign In to enter it. This live web event has ended. Thank you for attending. Contributors Ben Nelson, P.E. Ben Nelson, P.E., is Principal and Director of Structural Engineering for Martin/Martin, Inc as located in Lakewood, Colorado. He has 37 years' experience, all with the same firm. He is a former Board Member of the Structural Engineers Association of Colorado and served as President in 1999. He served on the NCSEA Board from 2007-2013 and President in 2012. He has presented at various seminars and symposiums for NCSEA, and SEA's in Montana, Utah, Nevada, New Mexico, Oklahoma, Florida and Idaho as well as the Structural Engineering Leadership Institute.