What describes a duct?

A duct is primarily defined as a conduit for conveying air, which is essential in various HVAC (Heating, Ventilation, and Air Conditioning) systems. Ducts are used to transport heated or cooled air throughout a building, ensuring that different areas receive adequate airflow. This function is critical in maintaining comfortable temperatures and proper air quality.

Understanding the significance of ducts in high-rise buildings is important for fire safety because they can also be pathways for smoke during a fire event. Fire safety protocols often involve ensuring that smoke control measures are in place within the duct systems to prevent the spread of smoke throughout the building. In contrast to other options, a duct does not function as a device that actively resists smoke, a sensing component for fire alarms, or a type of fan. Instead, it simply serves the vital role of air transportation.