Issues related to the installation of indoor fire hydrants
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I took a look; according to building code 8.2.1, factories and warehouses with a floor area of more than 300 square meters must be equipped with indoor fire hydrants. However, it isn’t specified here what type of factory this is. Clause 8.2.2 states that single or multi-story factories of categories D and E with a fire resistance rating of level 1 or 2 and low amounts of flammable materials do not need to have indoor fire hydrants. So, do areas with a floor area of less than 300 square meters and classified as category A need to have indoor fire hydrants?
This post was last edited by Qingchun Yishi on 2015-7-27 at 10:54. The Code for Fire Protection Design of Buildings sets out various regulations regarding the installation of fire water supply systems in buildings. Which buildings are required to have a DN65 fire hydrant system? Except for buildings that contain items whose contact with water can cause combustion and explosion, buildings without production or domestic water supply pipelines, those whose outdoor fire-fighting water is drawn from storage tanks, and other buildings with a volume of 5000 m3 or less which may not be equipped with indoor fire hydrants, the following buildings shall be equipped with DN65 indoor fire hydrants: (1) Factories (warehouses) with a floor area of more than 300㎡. (2) Stations, ports, and airports with a volume of more than 5000 m3, including waiting buildings for trains (ships, planes), exhibition buildings, shops, hotel buildings, ward buildings, outpatient buildings, library buildings, etc. (3) First-class and A-class theaters, theaters and cinemas of other categories with over 800 seats, and auditoriums, gyms, etc. with over 1,200 seats. (4) Other civil buildings such as office buildings, school buildings, and non-residential residential buildings with more than 5 floors or a volume greater than 10,000 m3. (5) Residential buildings with more than 7 floors shall be equipped with an indoor fire hydrant system; when this is truly difficult, dry fire risers and indoor fire hydrants of DN65 without hydrant boxes may be installed instead. 9. Length of the filled water column — The filled water column of a water gun refers to the dense, undispersed jet near the outlet of the gun. The length of the jet over which 90% of the water volume from the water gun nozzle passes through a circular hole with a diameter of 380 mm is called the filled jet length.
I’ve already read the building codes; I just don’t know what type of factory buildings are referred to as those with a area greater than 300 square meters