Which system is often employed in construction to allow for movement without compromising structural integrity?

The mechanical joint system is designed specifically for construction applications where movement must be accommodated without sacrificing the structural integrity of the building or structure. This system includes various components, such as flexible connectors or assemblies, that allow for relative movement between different parts of a structure, such as due to thermal expansion, contraction, or ground movement. This flexibility helps to prevent stress concentrations that could lead to cracking, failure, or other structural issues.

By utilizing mechanical joints, construction engineers can ensure that a structure maintains its functionality and durability while effectively managing forces that cause movement. This attribute is particularly vital in environments prone to seismic activity or temperature variations, where static connections might fail under dynamic conditions.

In contrast, the other options listed do not serve this specific purpose effectively. Tension systems manage loads but do not provide the same flexibility against movement. Beam systems generally refer to elements that support loads rather than accommodate movement, and compression joint systems are limited in their ability to accommodate lateral movements or expansion. Thus, the mechanical joint system remains the optimal choice for ensuring structural integrity while allowing for necessary movement.