Fire compartments are created by dividing space with which of the following?

Fire compartments are essential in fire protection and safety, designed to limit the spread of fire and smoke within a building. They are created by utilizing fire barriers, which are constructed using non-combustible materials to withstand the passage of flames and prevent the fire from moving between different areas of a structure.

Fire barriers can include walls, floors, and ceilings that are engineered to be resistant to heat and flames for a specified duration, hence providing a containment strategy that allows occupants to evacuate safely and gives firefighters time to respond. This method is critical for ensuring overall safety and compliance with fire codes, as it effectively separates different areas of a building and helps control the fire's potential spread.

While fire doors serve an important function in maintaining the integrity of fire compartments by providing a barrier when closed, they do not create compartments by themselves. Fire lanes are designated paths for emergency vehicles and do not influence the structural division of space. Smoke detectors, on the other hand, are safety devices that detect smoke but do not play a direct role in compartmentalizing a space. Therefore, fire barriers are the primary means of creating fire compartments, making them the correct choice.