Ventilation design issues in civil air defense works

Analyses some issues  including  selection of electric/manual acting fans, dust filters, airtight dampers and check dampers,  design of overpressure exhaust system and exhaust air system of toilets,  determination of air duct thickness,  protection of HVAC services,  design of fire protection and smoke extraction and  design explanations of the ventilating system. Presents some suggestions.