Previous Research Works on Reinforced Concrete Curved Beams W. H. Khaleel, A. A. Talal, N. H. Baidaa, K. S. Abdul-Razzaq and A. A. Dawood E3S Web Conf., 318 (2021) 03011 Published online: 08 November 2021 DOI: 10.1051/e3sconf/202131803011