Discussion on the setting of smoke control and exhaust system in hotel passage

5. Ventilation and smoke control system

(See Chapter 9 of Code for Fire Protection Design of Buildings and Chapter 8 of Code for Fire Protection Design of High-rise Civil Buildings)

Low-rise building: the above-ground room where people often stay in public buildings or where there are many combustibles, with a construction area of over 300m2; Internal walkways with a length greater than 20.0 meters; Two, the length of more than 20m corridor; Rooms with an area greater than 100m2 are often occupied by people or have more combustible materials; In the atrium of high-rise buildings and basements, people often stay here or have more combustible materials.

Places where natural smoke extraction can be considered:

The net area of openable external windows is 2% ~ 5% larger than the area of the site that needs smoke control and extraction. In a high-rise building, the openable outer window area of the inner walkway with a length not exceeding 60m should not be less than 2% of the walkway area.