Why must a bathroom door swing out if applicable?

A bathroom door swinging out is primarily designed to prevent obstruction during emergencies. In situations where immediate access is required, such as in the event of a medical emergency, a door that swings outward allows for a quicker exit. This design ensures that the door does not block the hallway or other exit routes, enabling emergency personnel to enter the bathroom more efficiently if help is needed.

While other factors such as space-saving, aesthetics, and ease of cleaning are considerations in building design, the critical function of an outward-swinging door is tied directly to safety and accessibility during emergencies, making it a vital element in ensuring that bathrooms are not only functional but also safe for all users.