Guards are required on walking surfaces where there is a vertical drop of at least?

In the context of life safety and building codes, guards are required on walking surfaces where there is a vertical drop of at least 30 inches. This requirement is based on the need to provide a safety barrier to prevent falls from higher elevations, which can lead to serious injury or death.

When the difference in height is significant, such as 30 inches or more, the risk of a fall increases dramatically. Guards serve as a protective measure, ensuring that individuals can navigate areas safely without the danger of accidentally stepping off a ledge or edge.

Building codes, including those referenced in NFPA guidelines, are designed to maintain a safe environment for occupants. As such, the implementation of guards at this height is a crucial aspect of safety regulations to mitigate risks associated with falls from elevated surfaces.