What happens to a building when it is subjected to wind loads? Any building or structures, in general, must ensure stability in two directions (Lateral & Longitudinal) to safely transfer loads from the location of application to the ground. Considering a typical steel warehouse building something similar to the following image, when it is subjected to wind load along the lateral direction, stability is ensured by the portal frame action. Lateral Direction - Along width of the building Longitudinal Direction - Along Length of the building The column and the rafter connected using a rigid joint act as a portal to sustain the lateral loads that act on the building. So, the building is fine in the lateral direction. What if the wind blows in the longitudinal direction? How longitudinal force gets transferred through the system? In the longitudinal direction, when the force acts on the gable ends of the building, the first component to interact with the load is the cladding materials (
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