Large mercantile occupancies are defined as where more than how many persons gather to buy merchandise?

Large mercantile occupancies are defined by the code as spaces where more than 100 persons are anticipated to gather for the purpose of buying merchandise. This definition is significant as it sets the threshold for safety regulations, fire codes, and mechanical systems requirements that must be adhered to in such environments.

This distinction helps ensure that adequate safety measures and building systems are in place to handle the expected occupancy load, including proper ventilation, air conditioning, emergency exits, and fire safety measures. Knowing this threshold is critical for architects, engineers, and builders when designing commercial spaces, as it directly influences operational safety standards and compliance with local building codes.