A vast majority of concrete design and construction today uses Grade 420 (420 MPa, 60 ksi) steel, with increasing use of Grade 500 (500 MPa, 72.5 ksi). Market forces and construction efficiencies promote the use of higher yield strength longitudinal reinforcement (for example, Grade 500). This reinforcement performs suitably if the elongation and stress requirements match those mentioned in different codes. Presently, Grade 500 (500MPa, 72.5 ksi) steel is available for concrete construction in Bangladesh. The present monograph explains the advantages and disadvantages of Grade 500 steel over Grade 420 so that a structural engineer can have adequate knowledge about the effect of Grade 500 steel in reinforced concrete for an efficient and economical design. The author also aims to provide design engineers with detailed knowledge about the use and behavior of Grade 500 steel in reinforced concrete design. This book is intended especially for the practicing structural engineers, and will also be useful for building officials, educators, and students.
Dr. Munaz Ahmed Noor, is a professor in the Civil Engineering Department at the Bangladesh University of Engineering and Technology (BUET), Dhaka. He received BSc degree in Civil Engineering and MSc in Structural Engineering from BUET in 1995 and 1997, respectively. He was awarded University Gold Medal for best academic performance. Earlier he was awarded the Presidential Gold Medal for securing first position in the combined merit list of the HSC examination. He was awarded a scholarship by the Asian Development Bank to study civil engineering at the University of Tokyo, Japan, where he received his Ph.D in 2000. During the past decade, he participated in numerous earthquake and concrete material related private and public projects. He contributed to and