In terms of mezzanine regulations, what percentage can enclosed space make up of the total mezzanine area?

The correct understanding regarding mezzanine regulations is that enclosed space can indeed make up up to 10% of the total mezzanine area. This regulation is established to ensure that while mezzanines are functional additions to a space, they do not become overly enclosed, which could potentially affect fire safety, ventilation, and accessibility.

By limiting the percentage of an enclosed area, the code encourages open spaces that enhance visibility, promote safety, and allow for better air circulation. This principle seeks to balance the benefits of having accessible mezzanine levels with the underlying need to maintain safety and compliance with building code requirements.

It's important to ensure that any design adheres to this stipulation to avoid setbacks during the permit application or during the building inspection process.