Ventilation combination design during peacetime and wartime in civil air defense underground garage

Combined with practical engineering, emphatically discusses the underground garage at ordinary times, civil air defense engineering in wartime ventilation system design requirements of being serviceable at both peacetime and wartime. In engineering design, presents the ventilation and smoke exhaust system types, compares their advantages and disadvantages, and draws some recommended conclusions. Discusses the design of import and export department, the checking method of various air volume and various size of ventilation shaft. Analyses and summarizes some problems easy to ignore in collaborative design.