The optimal design of reinforced concrete (RC) structure in the Arabian Gulf environment to withstand chloride-induced reinforcement corrosion is an indispensable task so as to reduce the life cycle costs and to ensure that structures do not fail before their designed service-life. For safety and durability in structures, high quality concrete,adequate cover thickness are required that can accommodate the loss of concrete and steel due to deterioration in a given corrosive environment. With the ultimate objective of designing durable RC structures, the research presented in this thesis is based on the common construction materials available locally and used in corrosive environments in Saudi Arabia.