This drawing is the air conditioning and ventilation design drawing of a high-rise apartment, which includes: floor plan, roof frame plan, section, fortification overpressure pressure measuring device diagram, air duct through the wall and watertight wall schematic diagram, civil air defense ventilation system diagram of the second underground floor, details of cleaning sampling pipe, details of the second underground floor civil air defense exhaust outlet, details of the second underground floor civil air defense inlet, etc, For reference.