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Last edited 15 Sep 2020
Lateral forces are those that are parallel to the plane of the wall, and are typically wind and seismic loads. In simple terms, lateral forces could push over parallel structural panels of a building were it not for perpendicular shear walls keeping them upright.
Shear walls are typically constructed from materials such as concrete or masonry. Shear forces can also be resisted by steel braced frames which can be very effective at resolving lateral forces but may be more expensive.
Lateral pressures tend to create a rotational force on the shear wall which, due to the shear wall acting as one member, produces a compression force at one corner and a tension force at another. When the lateral force is applied from the opposite direction, this ‘couple’ is reversed, meaning that both sides of the shear wall need to be capable of resolving both types of forces.
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