National requirements for commercial flue

Legal analysis: 1, National Residential Design Code (GB50096-20 1 1)

The exhaust volume of each kitchen is 300-500m per hour? ; The exhaust air volume of each household in the bathroom is 80- 100m per hour? .

2. National Code for Fire Protection Design of Buildings (GB500 16-2006)

The branch pipe shall be provided with a fire damper, and its working temperature shall be 150℃.

3. The fire damper shall meet the requirements of the national fire damper test method (GB 15930).

Each axis should be set independently.

4. Code for Design of Heating, Ventilation and Air Conditioning (GB500 19)

The kitchen and bathroom should be provided with vertical exhaust ducts, which should have the functions of fire prevention, backflow prevention, odor prevention and even exhaust.

5. Code for Fire Protection Design of High-rise Civil Buildings (GB50045)

The air duct is made of nonmetallic materials such as concrete, with smooth surface and flow velocity <15m/s.

6. According to the national industry standard JG/T 194-2006, the vertical load should not be less than 90KN；; Resistance to flexible impact; 10kg sandbag 1m high free fall impacts the same position five times, and the exhaust duct does not crack; The fire resistance limit of the exhaust duct should not be lower than1.0h. 。

7. According to the national industry standard C35/T309-20 13, the exhaust air volume of each household in residential kitchen exhaust duct should not be less than 300m? /h, no more than 500m? /h, and should be fire-proof, not backward; The exhaust air volume of each household in the exhaust pipe of residential bathroom should not be less than 80m? /h, no more than 100m? /h, and fire, can't fall.

Legal basis: Code for Residential Design GB 50096-20 1 1.

2.0. 17 number of natural layers

Number of floors divided by floor and floor structure.

2.0. 18 middle layer

The ground floor of the highest household, the floor between the entrance floor and the entrance floor.

2.0. 19 open floor of raised floor

An open space floor with only structural support and no external protective structure.

Corridor gallery

Horizontal channel used outside the enclosure.

2.0.2 1 contact gallery internal unit gallery

A horizontal passage connecting a building and an elevator of two adjacent residential units.

Residential building unit

A part of a building consisting of multiple houses, in which residents can be evacuated through stairs and safety exits.

basement

The indoor floor height below the outdoor floor exceeds the indoor clear height by 1/2.

semi basement

The indoor floor height below the outdoor floor exceeds 1/3 of the indoor clear height and does not exceed 1/2 of the space.

2.0.25 Attached to the auxiliary assembly room of public building.

The public buildings attached to the main body of the house include property management rooms, equipment rooms that meet the noise standards, small and medium-sized commercial rooms, and catering rooms that do not produce lampblack.

Mechanical layer of equipment layer

The building is specially designed for HVAC, air conditioning, water supply and drainage, electrical equipment and pipeline construction personnel to enter the working space.