On the dynamic properties of asymmetric wall-frame structures

An efficient approximate hand method is proposed for the evaluation of the dynamic properties of asymmetric wall-frame structures. The approximation is based on a two-degree-of-freedom zeroth order solution of the coupled differential equations of motion. The restrictions on the structural geometry of the building imposed in a previous paper¹ are relaxed and the accuracy of the approximation is made dependent on the similarity between the mode shapes of the uncoupled lateral and torsional systems.