1. The mechanical smoke exhaust and exhaust duct are used together in the garage on the underground floor. The smoke exhaust volume of the garage is calculated as 6 times/h, and the exhaust volume is calculated as 5 times/h. At the same time, the air supply system is set, and the air supply volume is calculated as 70% of the exhaust volume. After smoke exhaust (air exhaust) is collected by the air duct, the fire smoke exhaust double speed fan is discharged from the beam bottom of the side wall on the first floor.
2. Legend of tuyere and air valve, list of main ventilation equipment and materials, list of main ventilation equipment and materials, ventilation plan of the second floor underground, ventilation plan of the first floor underground, and outdoor ventilation plan.