International Journal of Engineering and Technology

Today, reinforced concrete (RC) structures are the most common structural system in Iran and in the world. Due to good performance in the construction of concrete walls, dual system of RC moment resisting frame with shear walls is one of the common structural systems in the structural engineering. Given the possibility of structural and environmental conditions, soil type, and owner needs, it should be mentioned that between dual systems the system such as intermediate RC moment resisting frame and intermediate RC shear walls have the most application in construction engineering. Determining the appropriate system including optimal span length and compressive strength of concrete for a specific number of floors is one of the important issues in designing in terms of economical design. In this paper, the effect of these parameters has been investigated in the structural construction cost by analysis and design of the many structural models. Generally, it can be concluded that in RC structures including intermediate RC moment resisting frame and intermediate concrete shear walls, increasing span length will lead to the rise in the structural construction cost, and increasing the strength of concrete will increase of structural construction cost despite decreasing the relative weight of structures.