Which type of assembly has a predetermined resistance to fire and is subject to testing?

The selection of fire-resistance rated assembly is based on its specific design and construction standards that ensure it has a predetermined resistance to fire. This type of assembly is constructed with materials and methods that have been tested to meet certain fire-resistance ratings established by regulatory bodies. Testing often evaluates how long the assembly can withstand exposure to fire while maintaining its structural integrity and preventing the passage of flames, heat, or gases that could endanger occupants.

In the context of building safety and codes, fire-resistance rated assemblies play a crucial role in fire protection strategies within buildings. These assemblies contribute to the overall safety of occupants by providing critical time for evacuation and minimizing property damage in the event of a fire.

The other types of assemblies mentioned do not inherently have these fire-resistance features or testing requirements. Composite assemblies might refer to combinations of materials but do not specifically imply fire-testing criteria. Pre-cast assemblies pertain to construction techniques and may or may not have fire-resistance ratings depending on the materials used. Modular assemblies, while efficient for construction, are not specifically recognized for having predetermined fire-resistance without explicit design considerations.