1, large and medium-sized computer room and its control room, recording medium library, room for machines, instruments, meters and equipment with high fire risk, valuables warehouse, room with gas fire extinguishing system;

2. A warehouse for cotton, wool, silk, hemp, chemical fiber and its fabrics with an area greater than 1000m2, and a cigarette warehouse with an area greater than 5002 or a total construction area greater than 10002;

3. Shoe-making, garment-making, toys and other factories with a construction area of over 1500m2 or a total construction area of over 3000m2;

4. Shops, exhibition buildings, financial and trade buildings and passenger and freight buildings with a construction area of over 3,000 square meters or a total construction area of over 6,000 square meters;

5, books, cultural relics collection, each library has more than100000 books, important files;

6. Radio and television buildings, postal buildings, telecommunications buildings, urban or regional electric power, flexibility and disaster prevention and relief command and dispatch buildings at prefecture level and above:

7. Superclass and first-class theaters or theaters and cinemas with more than 1500 seats, auditoriums with more than 2,000 seats, and gymnasiums with more than 3,000 seats:

8. Buildings for the elderly, hotels with a building area of more than 1500m2 or a total building area of more than 3000m2, ward buildings in sanatoriums, children's activity places, outpatient buildings, buildings and operating departments of hospitals with more than 200 beds;

9. Underground and semi-underground shops with a building area of more than 5002;

10, which is located underground, semi-underground or above four floors.

The technical interlayer of 1 1 has a clear height of more than 26m and more combustible materials, and a clear height of more than 0.8m, with a dark stuffy roof or suspended ceiling.