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A mathematical model to predict 3D wind loading on buildings with rectangular geometry and wind acting normally to a face is formulated. This methodology allows the evaluation of force distribution in the frequency domain including mean wind loads and fluctuating loads due to alongwind and acrosswind atmospheric turbulence and wake excitation; selfexcited forces are not taken into consideration. The reliability of the proposed technique is verified by comparing predicted results with experimental data available in the literature. The satisfactory agreement between theoretical and experimental results demonstrates the good applicability of this methodology, but also emphasizes the necessity of carrying out extensive wind tunnel and fullscale experiments in order to improve the knowledge of the most relevant aerodynamic parameters on which the correctness of the predicted results strongly depends.

This paper formulates a theoretically consistent definition of the wind response spectrum based upon the equivalent wind spectrum technique, a calculation procedure by means of which wind is schematized as a stochastic stationary Gaussian process characterized by a mean velocity profile on which an equivalent turbulent fluctuation, perfectly coherent in space, is superimposed. The method presented herein allows the evaluation of the dynamic along‐wind respohse of structures, as well as of the structural behavior to the seismic ground motion, by the well‐known response spectrum technique. This procedure, parallelly applied to wind and earthquake actions, reveals significant conceptual and formal analogies, leading to results characterized by the same order of approximation.

A mathematical model to predict 3‐D wind loading on buildings with rectangular geometry and wind acting normally to a face is formulated. This methodology allows the evaluation of force distribution in the frequency domain including mean wind loads and fluctuating loads due to alongwind and acrosswind atmospheric turbulence and wake excitation; self‐excited forces are not taken into consideration. The reliability of the proposed technique is verified by comparing predicted results with experimental data available in the literature. The satisfactory agreement between theoretical and experimental results demonstrates the good applicability of this methodology, but also emphasizes the necessity of carrying out extensive wind tunnel and full‐scale experiments in order to improve the knowledge of the most relevant aerodynamic parameters on which the correctness of the predicted results strongly depends.