When the floor area of any floor is more than 1500m? or the total floor area is more than 3000m?, sprinkler is required.

According to the Building Design Fire Prevention Code GB50016-2014 (2018 Edition):

8.3.4 Except as otherwise provided in this code and in places where water protection or fire extinguishing is not applicable, the following single- and multi-story civil buildings or places shall be equipped with automatic fire extinguishing systems, and it is appropriate to use automatic sprinkler systems:

1. Theaters of special class and class A, with more than 1500 seats of other classes of theaters, more than 2000 seats of the hall or auditorium, more than 3000 seats of the stadium, more than 5000 people in the stadium's indoor personnel lounge and equipment room, etc.;

2, any one floor of the building area of more than 1500m? or a total floor area of more than 3000m? of exhibitions, stores, restaurants and hotels, and hospitals with the same Ward building, outpatient building and operating department of the same scale;

3, the centralized air-conditioning system with air supply and return ducts and office buildings with a total floor area of more than 3,000m? Underground or semi-underground stores with a total floor area of more than 500m?;

7. Song, dance, entertainment, projection and amusement parks (except swimming pools) located on the underground or semi-underground floors or on four or more floors above the ground, and above-ground song, dance, entertainment, projection and amusement parks (except swimming pools) located on the first, second and third floors and with the floor area of any one of them being more than 300m?

different places according to the different options for different sprinkler heads:

1, sagging sprinkler head.

Sagging shower head is the most widely used type of nozzle, sagging installed in the water supply branch pipe, sprinkling the shape of the parabolic body type, the total amount of water sprayed to the ground 80-100%. Mainly used in places that do not need decoration, such as workshops, warehouses, parking garages, kitchens and other places.

2, upright type spray head.

Suitable for installation in the more mobile, easy to impact places such as warehouses, but also can be installed in the room ceiling mezzanine in the roof to protect the more flammable materials ceiling top boron.

Upright sprinkler head upright installed in the water supply pipe, sprinkler shape for the parabolic body type, the total amount of water 80 ~ 100% downward spray, while there is a part of the spray to the ceiling.

3, ordinary shower head.

Suitable for restaurants, stores, warehouses, underground garages and other places. Ordinary type sprinkler head can be installed directly, but also can be installed in the pendant on the spray pipe network, will be 40% -60% of the total amount of water down the spray, the larger part of the spray to the ceiling.

"Building Design Fire Code"-- Building Design Fire Code GB50016