A building is considered an assembly when how many or more persons occupy it at once?

A building is classified as an assembly when it is designed or used for the gathering of individuals for recreational, educational, or social purposes, among others. The threshold for this classification is when 50 or more people occupy the space at the same time. This standard is established to ensure that specific safety measures, such as egress requirements and occupancy limits, are met, which are crucial for the safety and welfare of those within the premises. The designation as an assembly occupancy includes various types of events and gatherings, making it important for fire inspectors to understand this definition, as different regulations and codes apply once this occupancy level is reached.