has over 15 years of experience in teaching and preparing engineers to pass the S.E. exam. He is a registered structural engineer and a former member of The Masonry Society, ASTM Committees C-12 and C-15, the Masonry Standards Joint Committee. He is the primary author of the 4th and 5th Editions of the Masonry Designers' Guide. Terry holds a Ph.D. in Civil Engineering and is a P.E. license as well as an S.E. license. Dr. Weigel is a Professor Emeritus, Department of Civil and Environmental Engineering, University of Louisville.