For parking garages, the code mandates automatic operation of ventilation systems by using which type of detectors?

For parking garages, the code mandates the automatic operation of ventilation systems utilizing carbon monoxide and nitrogen dioxide detectors. This requirement is based on the need to ensure air quality and the safety of occupants in enclosed spaces. When vehicles operate, they emit exhaust gases that can accumulate and create potentially hazardous conditions.

Carbon monoxide is a colorless, odorless gas produced during combustion, and its buildup can lead to serious health risks, including poisoning. Nitrogen dioxide also contributes to air quality concerns, especially because it can exacerbate respiratory issues. By using these specific detectors, the ventilation system can automatically activate or adjust based on the concentration of these harmful gases, ensuring that the air is continuously monitored and adequate ventilation is provided to maintain a safe environment within the parking garage.

Other types of detectors, such as temperature and humidity, focus on environmental conditions rather than direct safety hazards from vehicle emissions. Motion and presence detectors are related to occupancy sensing and do not address the quality of air produced by vehicle use. Smoke and fire detectors are more suited for detecting flammable materials and ignition sources, which, while important in their own right, do not specifically address the unique air quality challenges presented by parking garages. Therefore, the use of carbon monoxide and nitrogen dioxide detectors is essential for the