What are studwall cavities primarily used for?

Studwall cavities serve several purposes, but their primary function is to act as spaces for insulation and to facilitate air movement, making the correct answer focus on their ability to serve as air plenums.

Studwall cavities are designed within the composition of framed walls, creating a space that can be utilized for ductwork or air distribution systems. In commercial buildings, these cavities can accommodate air flow for heating, ventilation, and air conditioning systems, allowing for efficient temperature control and distribution of conditioned air throughout the space.

The involvement of studwall cavities in mechanical systems enhances the overall performance of HVAC systems, ensuring that air can move freely within the wall assembly, maintaining proper air circulation and supporting the building's climate control needs.

While soundproofing, insulating walls, and hiding electrical wiring are beneficial uses of studwall cavities, the primary intended function aligned with mechanical systems and airflow management distinguishes the correct answer. These functionalities support the essential operations of heating and cooling systems, which is critical in commercial settings.