About the Author
Arthur H. Nilson was engaged in research, teaching, and consulting relating to struc tural concrete for over 40 years. He has been a member of the faculty of the College of Engineering at Cornell University since 1956, in charge of undergraduate and graduate courseS in the design of reinforced concrete and prestressed concrete structures until his retirement in 1991. He served as Chairman of the Department of Structural Engineering from 1978 to 1985. Dr. Nilson has served on many professional committees, including Building Code Subcommittee 318-D of the American Concrete Institute (ACI). His pioneering work on high-strength concrete has been widely recognized. He was awarded the ACI Wason Medal for materials research in 1974, the ACI Wason Medal for best technical paper in 1986 and 1987, and the ACI Structural Res arch Award in 1993. Professor Nilson is an Honorary Member of ACI and a Fellow in the American Society of Civil Engineers (ASCE). He has been honored by the civil engineering student body at Cornell for outstanding teaching. He was elected Professor Emeritus in 1991. He has held research appointments or lectureships at the University of Manchester, Salford University, and the Technical University of Milan. He is a registered professional engineer in several states and, prior to entering teaching, was engaged in full-time professional practice. He received the B.S. degree from Stanford University in 1948, the M.S. from Cornell in 1956, and the Ph.D. from the University of California at Berkeley in 1967.
David Darwin has been a member of the faculty at the University of Kansas Since 1974 and has been director of the Structural Engineering and Materials aboratory since 1982. He was appointed the Deane E. Ackers Distinguished Profess of Civil Engineering in 1990. Dr. Darwin served as President of the American Concrete Institute in 2007-2008 and is a member and past chair of ACI Committees 224 on Cracking and 408 on Bond and Development of Reinforcement. He is also a member of ACI Building Code Sutbcommittee 318-B on Reinforcement and Development and of ACI-ASCE Committee 445 on Shear and Torsion. Dr. Darwin is an acknowledged expert on concrete crack control and bond between steel reinforcement and concrete. He received the ACI Arthur R. Anderson Award in 1992 for his research efforts in plain and reinforced concrete, the ACi Structural Research Award in 1996, and the ACI Joe W. Kelly Award in 2005 for his contributions to teaching and design. He has also received a number of awards from the American Soeciety of Civil Engineers, including the Walter L. Huber Civil Engineering Research Prize in 1985; the Moisseiff Award in 1991; the State-of-the-Art of Civil Engineering Award in 1996 and 2000; the Richard R. Torrens Award in 1997; and the Dennis L. Tewksbury Award in 2008. He has been honored for his teaching by the civil engineering students at the University of Kansas. He is past editor of the ASCE Journal of Structural Engineering. Professor Darwin is a Fellow of ACI and ASCE. He is a licensed professional engineer and serves as a consultant in the fields of concrete materials and structures. He was hon- ored with the Distinguished Alumnus Award from the University of Ilinois Civil and Environmental Engineering Alumni Association in 2003. Between his M.S. and Ph.D. degrees, he served four years with the U.S. Army Corps of Engineers. He received the B.S. and M.S. degrees from Cornell University in 1967 and 1968 and the Ph.D. fromthe University of Illinois at Urbana-Champaign in 1974.
Charles W. Dolan has been on the faculty at the University of Wyoming since 1991 serving as Department Head from 1998 to 2001. He was appointed the H. T. Person Professor of Engineering in 2002. He is currently chair of Building Code Sub 318-R of the American Concrete Institute. He has served as chair of the Technical Activities Committee, of ACI Committee 358 on Transit Guideways, and of ACI-ASCE Committee 423 on Prestressed Concrete. In private design practice for nearly 20 years, he was the project engineer on the Walt Disney World Monorail, the Detroit Downtown Peoplemover guideway, and the Dallas-Fort Worth Airport transit system guideway and is responsible for the conceptual design of the Dubai Palm Island norail. He received the T. Y. Lin Award from ASCE in 1973 for outstanding contributions to the field of prestressed concrete and the Arthur R. Anderson award from ACI in 2005 for ittee cements in the design of reinforced and prestressed concrete structures Aad Fellow in ACI and the Prestressed Concrete Institute (PCI), he is an internationally recognized leader in the development of fiber reinforced polymers for concret nent. He is a registered professional engineer and a consultant in the design of structural concrete. He received the B.S. from the University of Massachusetts in 1965 and the M.S. and Ph.D. from Cornell University in 1967 and 1989.
