Civil Air Defense garage ventilation design

Quick answer：

Civil Air Defense garage ventilation design refers to the planning and implementation of ventilation systems in underground or semi-underground parking garages designed for civil air defense purposes. This involves the selection of appropriate ventilation methods, the calculation of ventilation requirements, and the design of ventilation equipment to ensure adequate air exchange and control of pollutants within the garage. Key considerations include the garage's size, the number of vehicles, and the potential for emergencies such as chemical, biological, radiological, and nuclear (CBRN) threats.