The details are as follows:

Announcement of the Ministry of Housing and Urban-Rural Development on Issuing the National Standard "Code for Fire Prevention in Building Design"

The Code for Fire Prevention in Building Design is now approved as the national standard, numbered GB51116-2114, and will be implemented as of May 1, 2115. Among them, Paragraphs 3.2.2, 3.2.3, 3.2.4, 3.2.7, 3.2.9, 3.2.15, 3.3.1, 3.3.2, 3.3.4, 3.3.5 and 3.3. 3.6.12、3.7.2、3.7.3、3.7.6、3.8.2、3.8.3、3.8.7、4.1.2、4.1.3、4.2.1、4.2.2、4.2.3、4.2.5（3、4、5、6）、4.3.1、4.3.2、4.3.3、4.3.8、4.4.1、 4.4.2、4.4.5、5.1.3、5.1.4、5.2.2、 5.2.6、5.3.1、5.3.2、5.3.4、5.3.5、5.4.2、5.4.3、5.4.4（1、2、3、4）、5.4.5、5.4.6、5.4.9（1、4、5、6）、5.4.11（1、2）、5.4.11、5.4.12、5.4.13（2、3、4、5、6）、 5.4.15（1、2）、5.4.17（1、 2、3、4、5）、5.5.8、5.5.12、5.5.13、5.5.15、5.5.16（1）、5.5.17、5.5.18、5.5.21（1、2、3、4）、5.5.23、5.5.24、5.5.25、5.5.26、5.5.29、5.5.31、5.5.31、6.1.1、6.1.2、6.1.5、 6.17、 6.2.2、6.2.4、6.2.5、6.2.6、6.2.7、6.2.9（1、2、3）、6.3.5、6.4.1（2、3、4、5、6）、6.4.2、6.4.3（1、3、4、5、6）、6.4.4、6.4.5、6.4.11、6.4.11、6.6.2、6.7.2、6.7.4、6.7.5、6.7.6、 7.1.2、7.1.3、 7.1.8（1、2、3）、7.2.1、7.2.2（1、2、3）、7.2.3、7.2.4、7.3.1、7.3.2、7.3.5（2、3、4）、7.3.6、8.1.2、8.1.3、8.1.6、8.1.7（1、3、4）、8.1.8、8.2.1、8.3.1、8.3.2、8.3.3、 8.3.4、8.3.5、8.3.7、8.3.8、 8.3.9、8.3.11、8.4.1、8.4.3、8.5.1、8.5.2、8.5.3、8.5.4、9.1.2、9.1.3、9.1.4、9.2.2、9.2.3、9.3.2、9.3.5、9.3.8、9.3.9、9.3.11、9.3.16、11.1.1、 11.1.2, 11.1.5, 11.1.6, 11.1.8, 11.1.11 (1,2), 11.2.1, 11.2.4, 11.3.1, 11.3.2. The original Code for Fire Protection Design of Buildings (GB51116-2116) and Code for Fire Protection Design of High-rise Civil Buildings (GB51145-95) were abolished at the same time.

This specification is published by China Planning Press organized by the Institute of Standards and Norms of our Ministry.

The important provisions of Code for Fire Protection Design of Buildings (GB51116-2114)

Compared with Code for Fire Protection Design of Buildings GB 51116—2116 and Code for Fire Protection Design of High-rise Civil Buildings GB 51145-95(2115 edition), this code mainly has the following changes:

1.

2. Two chapters of fire fighting and rescue facilities and wood structure buildings were added, which improved the requirements of fire fighting and rescue and systematically standardized the fire protection requirements of wood structure buildings;

3. The fire protection requirements of the external thermal insulation system of the building are supplemented;

4. Make the setting of fire control facilities an independent chapter and improve the relevant contents; The requirement of canceling the design of fire water supply system and smoke prevention and extraction system is

, which is stipulated by the corresponding national standards respectively;

5. The fire protection technical requirements of high-rise residential buildings and high-rise civil buildings with building height greater than 111m have been appropriately improved;

6. Supplemented the fire prevention requirements when using the covered pedestrian street for safe evacuation; Adjusted and supplemented the density of designers in building materials, furniture, lighting shops and exhibition halls;

7. The fire prevention requirements for underground warehouses, logistics buildings, large flammable gas storage tanks (areas), liquid ammonia storage tanks and liquefied natural gas storage tanks were supplemented, and the fire prevention spacing of liquid oxygen storage tanks was adjusted. ;

8. The relevant requirements for preventing the vertical or horizontal spread of building fires have been improved.

Interpretation by relevant experts

Mr. Jiang Wenyuan of Sidi International Design Consultant (Shenzhen) Co., Ltd. interprets the new code as follows:

1. About the merger of Building Code and High Code

Code for Fire Protection in Architectural Design (hereinafter referred to as Building Code) and Code for Fire Protection in High-rise Civil Building Design (hereinafter referred to as High Code) For example, the volume of the roof fire-fighting water tank and the height of the water tank, the Building Code emphasizes that the water tank stores 11 minutes of fire-fighting water; "High Code" is to determine the volume of water tank according to the nature and standards of buildings. The "Building Regulations" stipulates that the water tank is located at the highest position of the building; "High Code" emphasizes the hydrostatic pressure of the most unfavorable fire hydrant. The setting of the fire pump adapter is emphasized in the Building Regulations. However, the "High Code" does not emphasize the setting of fire pump adapters for floors that exceed the water supply capacity of fire engines. The setting of fire pump is emphasized in the High Code. The Building Code does not stipulate that multi-storey buildings must be equipped with fire pumps. The setting of fire standby pump is emphasized in "High Code"; "Building Regulations" allows buildings with less fire water consumption not to have fire standby pumps.

However, there are some provisions that should be consistent but not consistent, such as whether the fire hydrants in the foreroom of the fire elevator are included in the total number of fire hydrants on the same floor. The provisions of the Building Code say that it is not included. When the High Code was revised in the 1991s, the sentence "not included in the total number of fire hydrants on the same floor" was crossed out, but it was not clear whether it was included in the provisions and provisions. At that time, it was considered that the engineers could decide whether the fire hydrants in the front room of the fire elevator were dedicated or used concurrently. If it is determined to be used exclusively or concurrently, corresponding technical measures should be taken. After the merger of "Building Code" and "High Code", the problem that the provisions of the two codes should be consistent but inconsistent was fundamentally solved.

the code for fire protection design of buildings and the code for fire protection design of high-rise civil buildings were merged into a new code for fire protection design of buildings (GB 51116-2114). Editor-in-chief of the new Building Regulations: tianjin fire Research Institute of the Ministry of Public Security and Sichuan Fire Protection Research Institute of the Ministry of Public Security. Interpreter: The Fire Department of the Ministry of Public Security organizes Tianjin and Sichuan Fire Research Institutes to be responsible for the interpretation of specific technical contents.

2. Examples of provisions in the new Building Regulations

1) Examples of provisions in the preface revision 1)

Examples of provisions 1:

1.1.2 This specification is applicable to the following newly built, expanded and rebuilt buildings:

1 factory building;

2 warehouse;

3 civil buildings;

4 Class A, B and C liquid storage tanks (zones);

5 combustible and combustion-supporting gas storage tanks (zones);

6 combustible material storage yard;

7 urban traffic tunnels.

The word "civil buildings" in Article 1.1.2 of Article 1 includes: four types of buildings included in Article 1.1.2 of the original Building Regulations:

residential buildings with 1, 9 floors and below (……);

2. Public buildings with a building height of less than or equal to 24m;

3. Single-storey public buildings with a building height greater than 24m;

4 underground and semi-underground buildings (...);

It also includes two types of buildings included in Article 1.1.3 of the original "High Code":

1, residential buildings with 11 floors or more (…);

2. Public buildings with a building height exceeding 24m.

example 2:

2.1.1 high-rise building: residential buildings with a building height of more than 27m and other non-single-storey buildings with a building height of more than 24m.

The definition of the term "high-rise building" clearly stipulates that residential buildings are divided into multi-storey buildings or high-rise buildings according to the building height instead of the number of floors. The reason is that it is more accurate according to the building height, but it will be quite different according to the number of floors. At the same time, it also shows that the requirements for residential buildings are wider than those for public buildings (27m for residential buildings and 24m for other buildings), and other buildings in the definition include both industrial buildings and civil buildings.

In order to illustrate that building height is more accurate than number of floors, examples are as follows: a project has 9 floors without overhead floors, each floor is 2.8m high, and the total building height is 2.8m× 9 = 25.2m; The other project has an overhead floor with a height of 2.1m；; 9 floors, each floor is 3.1m high, and the top floor is a thermocline. The total building height is: 2.1m+3.1m× 9+3.1m = 32.1m.. The two projects have the same number of floors, both of which are 9 floors, but the difference in building height is 32.1 m-25.2 m = 6.9 m.

example 3:

buildings with a building height of more than 251m should not only meet the requirements of this code, but also take more stringent fire prevention measures in light of the actual situation, and their fire prevention design should be submitted to the national fire department for special research and demonstration.

Article 1.1.6 of the third example comes from the original "Gao Gui". When compiling the 95th edition of "Gao Gui" from 1991 to 1993, it broke through the limit of building height of 111m and set the upper limit of building height of 251m m. The reasons considered at that time were:

1. The number of fires. The number of fires in high-rise buildings is generally once. When the building height is higher and its area and number of people reach the twice fire standard in Building Code, the number of fires should not be counted once again.

2. Speed of fire elevator. The speed of the fire elevator is required to be from the bottom to the top within 1min. In that year, the speed of the fire elevator was 2.5m/s, and the 251m high-rise building took 111s, that is, 1.67min, which was slightly lower than the standard requirement, but not more than 2min.

3. Power supply guarantee. The first-class building and the second-class building have clear regulations on power supply respectively. When the building height is higher, the requirements for power supply guarantee are higher, which was difficult to achieve in China at that time.

4. engineering case. At that time, the built and planned buildings in China were generally below 251m in height. High-rise buildings with a building height of more than 251m are called out-of-code buildings (referring to high-rise buildings exceeding the upper limit) and super-high buildings (referring to high-rise buildings exceeding the super-high-rise buildings), which have not been unified in China, so I prefer to call them out-of-code buildings. It is generally believed that buildings with a height of more than 111m are also called super high-rise buildings. Those that reach 152m are called skyscrapers. How to name a high-rise building with a building height of 251 m ~ 1111 m is also a problem.

example 4:

2.1.4 commercial service outlets. It is defined as: small commercial houses such as shops, post offices, savings offices and barbershops, which are located on the first floor or the first and second floors of residential buildings, and are separated from each other by fireproof partitions with a fire resistance limit of not less than 2.11h and no doors, windows and holes, and the construction area of each separation unit is not more than 311m2.

Article 2.1.4 of Example 4 specifies whether the building area is not more than 311m2, which is the total area or the area of separated units; Avoid ambiguity.

2) Examples of provisions in the preface revision 2)

Example 5 of provisions:

7.3.3 A passenger elevator or a cargo elevator meeting the requirements of a fire elevator can also be used as a fire elevator.

article 7.3.3 of example 5 means that there may not be one fire elevator in the future, but there may be multiple fire elevators. This involves the drainage problem at the bottom of the elevator. When the passenger elevator or cargo elevator that meets the requirements of the fire elevator is also used as the fire elevator, it should also be drained according to the requirements of the fire elevator. It also relates to the problem that the drainage pump of the fire elevator and the passenger elevator or freight elevator which is also used as the fire elevator is special and special.

Article 6:

7.4.2 The helipad shall meet the following requirements:

4 fire hydrants should be set at proper positions on the apron; ……。

Article 7.4.2 of Article 6 is more detailed than that of the previous specifications for setting fire hydrants on the apron. The proper position referred to in the article refers to the position that does not affect the lifting of the helicopter and is conducive to the anti-freezing and fire extinguishing of the fire hydrants.

Example 7:

Chapter 8 is added to the new Building Regulations, and Chapter 8 has five sections. The names of the chapters are as follows:

8. Setting of fire-fighting facilities

8.1 General provisions (this section is equivalent to Section 8.2 "Outdoor fire-fighting water consumption, Fire water supply pipes and fire hydrants ")

8.2 Indoor fire hydrant system (this section is equivalent to Section 8.3" Installation place of indoor fire hydrants "in the current Construction Code)

8.3 Automatic fire extinguishing system (this section is equivalent to Section 8.5" Installation place of automatic fire extinguishing system "in the current Construction Code)

8.4 Automatic fire alarm system

8.5 Prevention.

outdoor fire hydrant system should be set on the roof used for fire rescue and fire truck parking.

For Class E factory buildings with a fire resistance rating of not less than Grade II and a building volume of not more than 3111m3, and residential areas with no more than 511 people and no more than two floors, outdoor fire hydrant system is not required.

article 8.1.2 of example 8 stipulates the conditions for installing or not installing an outdoor fire hydrant system, which is the most basic and main fire extinguishing facility, and should be installed on the outdoor ground and the roof of the fire truck. Places with not low fire resistance rating, small building volume, low production fire risk, small number of people and low building floors may not be set up. clause