Shear in Concrete

Definition: an internal force tangential to the plane on which it acts.- ACI Concrete Terminology

Shear typically denotes a force that acts perpendicular to the length of a beam or a column (often referred to as “beam shear” ) or vertically in a slab. While shear can occur perpendicular to the surface of a wall, walls are most often used to resist shear along their length and are referred to as “shear walls.” One mechanism that transfers shear from slabs to columns is termed “punching shear.” Such shear can be resisted by the slab-column interface, and additional resistance can be provided by drop panels, shear caps, or reinforcement.

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