Coupling beams are typically added to a structure to improve its lateral force resistance. They bridge two separate, independent items (like shear walls) to add stiffness to the overall system. They are usually short and thick, similar to deep beams. In concrete buildings, in particular, they take the form of concrete beams, which are often one of the most critical elements.
ConcreteReinforced concreteSample projectsDetail 2DEN (Eurocode)
Coupling beam
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