Determination of reinforcement ratios in reinforced concrete columns
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Determination of Reinforcement Ratios in Reinforced Concrete Columns The structures, in which all frames and vertical structural elements (column and shear walls) are in two planes perpendicular to each other, are called as orthogonal structures. Structures which do not meet this definition are called as non-orthogonal structures. In contemporary earthquake-resistant design codes, it has been indicated that the earthquake analysis of the structures containing non-orthogonal elements can also be made according to end forces calculated for two directions perpendicular to each other. For this aim special combination formulae have been given. However, how the interaction of the end forces obtained for the two principal axes in these formulae will be taken into consideration has not been clearly explained. Several studies have been performed on this subject and new combination equations have been proposed. The results obtained from these studies are limited by the scope of them. As a result, a combination equation giving accurate results in each case has not been obtained yet. The aim of this study is to improve a combination equation which was proposed previously. For this aim a general table has been developed.