non-occupiable room

Any room that is not used for department personnel. Examples of non-occupiable rooms are vertical penetrations areas, primary circulation (lobbies, and public corridors), file rooms, storage areas, and mechanical rooms. Other types of service areas , such as secondary circulation, meeting rooms, and lunch rooms can be classified as either occupiable or non-occupiable depending on your reporting goals - whether you want to document the areas current use or its potential use.

You designate a room as non-occupiable by assigning it to a room category that has its Occupiable? field set to No.