What is the general requirement for air terminals when applied to structures with roofs?

Air terminals, commonly known as lightning rods, serve a crucial purpose in protecting structures from lightning strikes by providing a specific point for the lightning to attach and flow safely to the ground. The requirement for air terminals is applicable to both flat and pitched roofs because lightning can strike any structure, regardless of its roof type.

Installing air terminals on both roof types ensures that all buildings are adequately protected, as each type of roof presents its own risk profile for lightning strikes. Flat roofs may be more susceptible to lateral strikes due to their lower profile, while pitched roofs may attract strikes due to their height and shape. By standardizing the requirement to include both types of roofs, it establishes a comprehensive approach to lightning protection, minimizing the risk of structural damage or fire caused by a strike.

This inclusive requirement reflects the understanding that lightning does not discriminate based on roof design, emphasizing the importance of protection mechanisms in any construction scenario.