What is the term for the point through which the effective lateral force acts?

The term for the point through which the effective lateral force acts is known as the Center of Rigidity. This point is significant in structural engineering and design as it represents where applied lateral forces, such as those due to wind or seismic activity, are resisted within a structure. When designing structures, particularly those subject to lateral loads, understanding the location of the Center of Rigidity helps engineers ensure stability and control of deflections.

In essence, the Center of Rigidity is the point where stiffness is concentrated and helps in maintaining the equilibrium of the structure when lateral forces are applied. This is crucial for the overall performance of the structure during dynamic events because it influences how forces distribute across different components.

While options like Center of Gravity and Point of Application might relate to force considerations in different contexts, they are not specifically tied to the effective lateral force in the same way that the Center of Rigidity is. The Center of Gravity pertains to the distribution of mass, and the Point of Application refers more to where a force is applied rather than how the structure will respond to lateral loading. The Node of Forces is not a standard term used to describe this phenomenon. Thus, identifying the Center of Rigidity ensures a deeper understanding of the structural response concerning lateral forces.