Skylights are allowed to be unprotected through a fire-resistance-rated roof assembly as long as what is maintained?

Skylights can be unprotected when integrated into a fire-resistance-rated roof assembly as long as structural integrity is maintained. This means that the skylights must be designed and installed in a way that ensures they do not compromise the overall structural performance of the roof assembly, especially in the event of a fire.

The primary concern with skylights in a fire-resistance-rated system is that they should not allow fire and smoke to spread through the roof, which could lead to the failure of the assembly. By ensuring that the structural integrity is upheld, the skylight can function safely without requiring additional protective measures, as long as it meets the necessary regulations and building codes designed to ensure safety.

The other options relate to important considerations for buildings but do not specifically address the requirements for skylights within a fire-resistance-rated assembly. Fire extinguisher access focuses on emergency response capabilities, clear visibility pertains to lighting conditions and safety but does not influence structural performance, and temperature control is more about HVAC systems rather than fire resistance in structural components.