1. Factory buildings with above-ground floor area exceeding 300m²; interior corridors longer than 20.0m in Class C factories with numerous personnel and combustible materials, or in high-rise buildings over 32.0m in height; Class D factories with floor area exceeding 5,000m² on any level.

2. A Class B warehouse with a floor area exceeding 1,000 square meters.

3. Public buildings often have frequent occupancy or a higher concentration of combustible materials, as well as above-ground rooms with a floor area greater than 300m²; interior corridors longer than 20.0m.

4. Atrium

5. Establishments located on the first, second, and third floors with a floor area greater than 200m2, or those on the fourth floor and above, or in underground or semi-underground areas, dedicated to dancing, singing, entertainment, film projection, and amusement.

6. Total floor area exceeding 200m², or a room with floor area greater than 50m² that is frequently occupied or has a high concentration of combustible materials, including underground, semi-underground structures, or basements and semi-basements.

7. Other buildings with egress corridors longer than 40 meters on the ground level.