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Last edited 22 Feb 2019
A shear force is a force applied perpendicular to a surface, in opposition to an offset force acting in the opposite direction. This results in a shear strain. In simple terms, one part of the surface is pushed in one direction, while another part of the surface is pushed in the opposite direction.
Large or high-rise buildings must be designed with shear walls to provide resistance to shear forces, which might otherwise push over parallel structural elements of a building, in what is known as racking. For more information, see Shear wall.
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