Hello: friend, according to 1, the national "residential design code" GB50096-2011

Kitchen exhaust volume per household per hour 300-500m_

Toilet exhaust volume per household per hour 80-100m_

2, the national "architectural fire code" GB50016-2006

Branch pipe should be set up with an action temperature of 150 ℃ fire damper Code GB50016-2006

The branch pipe should be set up with fire damper whose action temperature is 150℃

3. The fire damper should be in accordance with the national "Test Method of Fire Damper" GB15930

The wells should be separately and independently set up.

4, the national "Design Code for Heating, Ventilation and Air Conditioning" GB50019

Kitchen, bathroom should be set up in the vertical exhaust ducts, the vertical exhaust ducts should be fireproof, backflow prevention, anti-scorching, and uniform exhaust function.

5, the national "high-rise civil building design and fire code" GB50045

Smooth surface concrete and other non-metallic materials ducts, the flow rate <15m/s

6, the national "Residential Kitchen, Bathroom Exhaust Ducts," JG/T194-2006 industry standards

Vertical loading force should not be less than 90KN; resistance to flexible impact; 10kg sandbags 1m high free fall, 5 impacts on the same location, the exhaust duct does not crack; exhaust duct fire-resistant polarity is not less than 1.0h.

7, the country's "Building Ventilation Testing and Evaluation Standards," C35/T309-2013 industry standards

Residential kitchen exhaust air volume per household should not be less than 300m_/h, not greater than 500m_/h, and should be fireproof, not backed up;

Residential bathroom exhaust air volume per household should not be less than 80m_/h, not greater than 100m_/h, and should be fireproof, not backed up. I hope my answer can help you.