At what height above the floor or grade must decks enclosed with insect screening be provided with guards?

Decks that are enclosed with insect screening must be equipped with guards when they reach a height of 30 inches or more above the floor or grade to ensure safety. This requirement is based on building codes, which aim to prevent falls from elevated surfaces. At this height, the risk of injury in the event of a fall increases significantly, hence the need for guards to provide protection. Guards serve as a barrier that enhances safety by preventing individuals from falling off the edge of the deck.

The other height options are below the threshold established by building codes for guard requirements, as they do not adequately mitigate the fall risk associated with higher surfaces. Therefore, the 30-inch height serves as a critical guideline in ensuring that safety measures are in place for elevated decks.