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Classification and fire resistance rating of buildings

. The wood workshop adopts brick-wood structure composed of wooden roof and brick wall. According to the Code for Fire Protection Design of Buildings (GB51116-2116), its fire resistance rating should be Grade III. In addition, the fire resistance rating of Class C workshops and warehouses should not be lower than Class III, and the maximum allowable number of floors for Class C workshops with fire resistance rating of Class III should not exceed two.

2. According to the stipulation in Code for Fire Protection Design of Buildings (GB 51116-2116) that "public buildings with a building height not exceeding 24m are single-storey and multi-storey public buildings", large shopping centers and large catering buildings with a building height not exceeding 24m are all multi-storey public buildings.

3. Sports buildings are classified into four grades: super grade, grade A, grade B and grade C; Except for the super sports building, the fire resistance rating of other sports buildings should not be lower than the second level. According to the Code for Design of Sports Buildings (JGJ 31-2113), the building grade of the gymnasium, which is mainly used for holding regional competitions, should be Grade B, and its fire resistance rating should not be lower than Grade II.

4. Important public buildings are important buildings for political, economic and life security in a certain area, or large buildings with high concentration of cultural and sports buildings or people. If these buildings fail to recover as soon as possible after a fire or provide enough safe time for fire fighting, it may cause serious consequences. The large-scale dining building should be an important public building. According to the Code for Fire Protection Design of Buildings (GB 5111 6-2116), the fire resistance rating of the basement of this building should be Grade I; The fire resistance rating of above-ground buildings should not be lower than Grade II.

5. According to the Code for Fire Protection Design of High-rise Civil Buildings (2115 Edition) (GB 51145-1995), public buildings with a building height exceeding 51m should be classified as a class of high-rise public buildings.

6. Towers should be classified according to building height, function, fire risk and difficulty in fighting. If the tower is an important office building with a building height of more than 51m (an important office building refers to an office building with important nature, high building decoration standard, valuable equipment and materials, great fire risk, great loss after fire and great influence), according to the Code for Fire Protection Design of High-rise Civil Buildings (2115 Edition) (GB 51145—1995), the building classification of the tower should be a class of high-rise public buildings. In addition, when the building height of a high-rise building exceeds 251m, the special fire prevention measures taken in architectural design should be submitted to the national fire department for special research and demonstration.

7. according to the code for fire protection design of high-rise civil buildings (2115 edition) (GB 51145—1995), the hospital high-rise ward building with a building height of 43.5m should be a kind of high-rise public building.

8. Residential building refers to the building for family living (including the residential part in the same building as other functional spaces), referred to as residence for short. Commercial service outlets refer to small commercial service rooms such as department stores, non-staple food stores, grain stores, post offices, savings offices, barbershops, etc. located at the bottom (on the ground) of houses; The building has no more than two floors and a building area of 311m2. The floor with fire resistance greater than 1.51h and the partition wall with fire resistance greater than 2.11h, which does not open doors, windows and holes, are completely separated from the house and other houses. The evacuation stairs and safety exits of the house and the house should be set separately.

9. according to the code for fire protection design of high-rise civil buildings (2115 edition) (GB 51145—1995), "the residential buildings with 19 floors and above are a class of high-rise residential buildings", the architectural classification of the residential buildings with 21 floors should be a class of high-rise residential buildings, and their fire resistance rating should be class I.

11. if the building height of the complex building exceeds 51m, according to the code for fire protection design of high-rise civil buildings (2115 edition) (GB 51145~1 995), its building classification should be a class of high-rise public buildings; The fire resistance rating of the basement of the complex building should be Grade I, the fire resistance rating of the main building should be Grade I, and the fire resistance rating of the podium should not be lower than Grade II.

11. the classification of garages should be determined according to the number of parking spaces. according to the code for fire protection design of garages, repair garages and parking lots (GB51167—1997), garages with 421 parking spaces should be class I underground garages. The fire resistance rating of underground garage shall be Grade I..

12. methanol is produced during the production of methanol synthesis plant, and its fire hazard is characterized by a flash point of less than 28. C, according to the code for fire protection design of buildings (GB 51116 2116), the fire hazard category produced by this workshop should be Class A.. The fire resistance rating of Class A workshop should not be lower than Class II, and the maximum allowable number of floors should be single, except that multiple floors must be used in production.