Performance-Based Specifi cations for Concrete Apr, 2005 By Lionel Lemay, P.E., S.E., Colin Lobo, Ph.D., P.E. and Karthik Obla, Ph.D., P.E. In Articles, Structural Practices A Focus on Innovation, Quality and Customer Satisfaction This article is currently only available in PDF format, please click the link to the top right. About the author ⁄ Lionel Lemay, P.E., S.E.Lionel Lemay, P.E., S.E. is senior director of applied engineering with NRMCA. Prev 300 Madison Avenue Next Supporting Precast Panels