建筑防火通用规范（GB 55037-2022）第7.2.1条

厂房中符合下列条件的每个防火分区或一个防火分区的每个楼层，安全出口不应少于2个：

    1 甲类地上生产场所，一个防火分区或楼层的建筑面积大于100m²或同一时间的使用人数大于5人；

    2 乙类地上生产场所，一个防火分区或楼层的建筑面积大于150m²或同一时间的使用人数大于10人；

    3 丙类地上生产场所，一个防火分区或楼层的建筑面积大于250m²或同一时间的使用人数大于20人；

    4 丁、戊类地上生产场所，一个防火分区或楼层的建筑面积大于400m²或同一时间的使用人数大于30人；

    5 丙类地下或半地下生产场所，一个防火分区或楼层的建筑面积大于50m²或同一时间的使用人数大于15人；

    6 丁、戊类地下或半地下生产场所，一个防火分区或楼层的建筑面积大于200m²或同一时间的使用人数大于15人。

 General Specification for Building Fire Protection (GB 55037-2022), Article 7.2.1

As for every fire compartment or every storey in a fire compartment in the factory building meeting the following requirements, the quantity of the safety exits shall not be less than 2:

1. For Category A aboveground factory buildings, the building area of a fire compartment or floor is more than 100m² Or the number of users at the same time is more than 5;

2. For Category B aboveground factory buildings, the building area of a fire compartment or floor is more than 150m² Or the number of users at the same time is more than 10;

3. For Category C aboveground factory buildings, the building area of a fire compartment or floor is more than 250m² Or the number of users at the same time is more than 20;

4. For Category D and E aboveground factory buildings, the building area of a fire compartment or floor is more than 400m² Or the number of users at the same time is more than 30;

5. For Category C underground or semi-underground factory buildings, the building area of a fire compartment or floor is more than 50m² Or the number of users at the same time is more than 15;

6. For Category D and E underground or semi-underground factory buildings, the building area of a fire compartment or floor is more than 200m² Or the number of users at the same time is more than 15