Flexural capacity of reinforced shear walls using strength procedures is calculated using momentaxial force interaction diagrams as discussed in the lecture on masonry beam-columns.
In contrast to the elements addressed in that lecture, a shear wall is subjected to flexure in its own plane rather than out-of-plane. It therefore usually has multiple layers of flexural reinforcement. Computation of moment-axial force interaction diagrams for shear walls is much easier using a spreadsheet.
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