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GB 50084-2017 Code for Design of Sprinkler Systems

Standards160 clauses

General Provisions

第 1.0.1 条To ensure the design quality of automatic sprinkler systems in hotel buildings, standardize design practices,…
第 1.0.2 条This specification applies to the design of automatic sprinkler systems in new, expanded, and renovated hotel…
第 1.0.3 条The design of automatic sprinkler systems in hotel buildings shall follow the principle of prevention first, …
第 1.0.4 条The design of the automatic sprinkler system in hotel buildings shall be coordinated with the building fire p…
第 1.0.5 条The design of automatic sprinkler systems in hotel buildings shall, in addition to complying with this code, …

Terminology

第 2.1.1 条Automatic sprinkler system : A fixed fire extinguishing system composed of sprinkler heads, alarm valve assem…
第 2.1.2 条Closed system : An automatic sprinkler system using closed type sprinkler heads. Hotel buildings typically us…
第 2.1.3 条Open system : An automatic sprinkler system using open sprinkler heads.
第 2.1.4 条Wet system : A closed system in which the piping is filled with pressurized water used to activate the system…
第 2.1.5 条Dry system : A closed system in which the piping is filled with pressurized gas used to actuate the system un…
第 2.1.6 条Pre action system : A closed type system in which the piping is not filled with water under normal standby co…
第 2.1.7 条Repeated on off pre action system : A pre action system that can automatically close after a fire is extingui…
第 2.1.8 条Sprinkler head : A component that activates automatically under heat at a specified temperature and pressure,…
第 2.1.9 条Standard response sprinkler : A sprinkler with a response time index (RTI) between 80 (m·s)⁰·⁵ and 350 (m·s)⁰…
第 2.1.10 条Quick response sprinkler : A sprinkler with a response time index (RTI) less than or equal to 50 (m·s)⁰·⁵. Ho…
第 2.1.11 条Sidewall sprinkler : A sprinkler installed against a wall that sprays water to one side (half parabola distri…
第 2.1.12 条Pendent sprinkler : A sprinkler that discharges water downward.
第 2.1.13 条Upright sprinkler : A sprinkler that discharges water upward.
第 2.1.14 条Concealed sprinkler head : A sprinkler head with a decorative cover plate that sits flush with the ceiling. C…
第 2.1.15 条Alarm valve assembly : A component consisting of an alarm valve, water motor gong, pressure switch, retard ch…
第 2.1.16 条Water flow indicator : A alarm device that converts water flow signals into electrical signals to indicate th…
第 2.1.17 条End of line test valve assembly : Comprising a test valve, pressure gauge, and test connection, etc.; a devic…
第 2.1.18 条Water distribution pipe : The pipe that supplies water to the distribution pipe after the alarm valve assembl…
第 2.1.19 条Water distribution pipe : A pipe that supplies water to the distribution branch pipes.
第 2.1.20 条Branch line : A pipe that supplies water to sprinklers directly or through a short riser.
第 2.1.21 条Operating area : The maximum area protected by the system at the design spray density during a single fire. T…
第 2.1.22 条Sprinkler at the most unfavorable point : The sprinkler with the lowest operating pressure at the farthest or…
第 2.1.23 条Spray density : the amount of water sprayed per unit area per unit time. For hotel buildings (Medium Hazard C…
第 2.1.24 条Response Time Index (RTI) : A metric for measuring the thermal sensitivity of sprinkler heads, used to distin…
第 2.1.10 条Note : The above clauses are all from Chapter 2 of GB 50084 2017, among which clauses 2.1.14, 2.1.16, 2.1.23,…

Setup location

第 3.0.1 条For hotel buildings with a building height greater than 100m, automatic sprinkler systems shall be installed …
第 3.0.3 条For hotel buildings with a building height not exceeding 50m and a floor area of any single storey not exceed…
第 3.0.6 条In underground or semi underground shops, restaurants and similar premises within hotel buildings, an automat…
第 3.0.9 条Car parks in hotel buildings (including underground garages and above ground parking structures) shall be pro…

Setting location

第 3.0.2 条For hotel buildings with a building height greater than 50m or a floor area of any single storey greater than…
第 3.0.4 条Song and dance entertainment, screening, and amusement venues in hotel buildings (such as KTVs, cinemas, etc.…
第 3.0.5 条Kitchens in hotel buildings (including staff canteen kitchens, banquet kitchens, etc.), regardless of buildin…
第 3.0.7 条Equipment rooms such as oil fired or gas fired boiler rooms and diesel generator rooms in hotel buildings sha…
第 3.0.8 条In hotel buildings, laundry rooms, linen rooms and other combustible storage rooms with a floor area greater …

System selection

第 4.1.1 条Sprinkler systems should be installed in places with high occupant density, difficult evacuation, and where e…
第 4.2.1 条In areas where the ambient temperature is not lower than 4℃ and not higher than 70℃, a wet system shall be us…
第 4.2.2 条In locations where the ambient temperature is below 4℃ or above 70℃, a dry system shall be used. In hotels, a…
第 4.2.3 条Spaces with any of the following requirements shall use a pre action system:<br 1. Accidental discharge is st…
第 4.2.4 条In areas where water spraying must be stopped promptly after fire extinguishing, a repeated on off pre action…
第 4.2.6 条For spaces complying with Article 4.2.5 of this code, an automatic sprinkler system with early suppression fa…
第 4.2.7 条In areas with significant quantities of flammable liquids, foam water sprinkler systems or closed head foam w…
第 4.2.8 条Automatic sprinkler protection cooling systems can be used for cooling protection of fire separation faciliti…
第 4.3.1 条System selection shall be comprehensively determined based on factors such as the fire hazard classification …

System Selection

第 4.2.5 条Deluge systems shall be used in locations meeting any of the following conditions:<br 1. Where fire spreads r…

Design parameters

第 5.0.1 条The fire hazard classification of hotel buildings (hotels, which fall under civil buildings) shall be determi…
第 5.0.1 条For Moderate Hazard Class I, the sprinkler discharge density shall not be less than 6 L/(min·m²) , and the de…
第 5.0.2 条For a closed system with a single row of sprinklers installed only in a corridor, the operating area shall be…
第 5.0.4 条The action area of a dry pipe system shall be determined as 1.3 times the value specified in Table 5.0.1 of t…
第 5.0.8 条In spaces with permeable suspended ceilings such as grid or grille type, the system sprinkler discharge densi…
第 5.0.10 条In hotel buildings, for atria with a clear height greater than 8 m and less than or equal to 12 m, the sprink…
第 5.0.11 条In hotel buildings, for conference halls and multi function halls (classified as other occupancies) with a cl…
第 5.0.13 条In hotel buildings, for an atrium with a clear height greater than 8 m and less than or equal to 18 m, when n…
第 5.0.15 条In hotel buildings, for conference halls and multi function halls with a clear height greater than 8 m and le…

Sprinkler layout

第 7.1.2 条The arrangement of upright and pendent standard coverage sprinklers, including the spacing between sprinklers…
第 7.1.3 条The maximum protection span and spacing of sidewall standard spray sprinklers with standard coverage area sha…
第 7.1.4 条Upright and pendent extended coverage sprinklers shall be arranged in a square layout, with spacing not excee…
第 7.1.5 条The maximum protection span and spacing of sidewall extended coverage sprinklers shall comply with the provis…
第 7.1.6 条Except for ceiling type sprinklers and sprinklers installed below ceilings, for upright and pendent standard …
第 7.1.7 条Except for ceiling type sprinklers and sprinklers installed below ceilings, the distance between the deflecto…
第 7.1.8 条Sprinklers should be installed above aisles in libraries, archives, shopping malls, and warehouses. The horiz…
第 7.1.9 条Sprinklers shall be installed in concealed spaces and technical interlayers with a clear height greater than …
第 7.1.10 条When a local area is provided with an automatic sprinkler system, sprinklers shall be installed on one side o…
第 7.1.11 条In locations with open grid ceilings, sprinklers shall be installed below the roof slab. When the open area e…
第 7.1.12 条When the roof slab or suspended ceiling is sloped, sprinklers shall be installed perpendicular to the slope, …
第 7.1.13 条Within 1 m on both sides and 2 m directly in front of a sidewall sprinkler, there shall be no obstructions un…
第 7.1.14 条For the sprinkler layout of a fire separation water curtain, the curtain width shall be no less than 6 m. Whe…
第 7.1.15 条When fire separation facilities such as fire shutter and fire resistant glass wall need to be protected by a …
第 7.1.16 条Sprinklers shall be located under the roof slab or suspended ceiling in positions where they can readily be e…
第 7.1.2 条Among the above clauses, , 7.1.6, 7.1.9, and 7.1.13 are the clauses requiring key attention in hotel design, …
第 7.2 条During detailed design, this should also be determined comprehensively in conjunction with Section [X] of thi…

Pipe

第 8.0.1 条The working pressure of the water distribution pipe shall not exceed 1.20MPa, and no other water using facili…
第 8.0.2 条Water distribution pipes shall be hot dip galvanized steel pipes with internal and external walls, coated ste…
第 8.0.3 条Connection methods for automatic sprinkler system piping:<br • Galvanized steel pipe: threaded connections ar…
第 8.0.4 条Pipe diameter shall be determined by hydraulic calculation. The layout of the distribution pipes shall balanc…
第 8.0.5 条Number of standard sprinklers controlled by each branch line on both sides of a cross main:<br • In light haz…
第 8.0.6 条Number of sprinklers controlled by a branch line: <br • For severe hazard and storage hazard occupancies, it …
第 8.0.7 条The short riser and the connecting pipe of the end water test device shall have a pipe diameter of not less t…
第 8.0.8 条For the air supply piping of dry systems and pre action systems, when steel pipe is used, the pipe diameter s…
第 8.0.9 条Horizontally installed pipes should have a slope and should slope toward the drain valve. The slope of water …
第 8.0.10 条The installation of pipe supports, hangers, and sway braces shall meet the following requirements:<br • Pipes…

Hydraulic calculation

第 9.1.1 条The operating pressure of the sprinkler at the most unfavorable point of the system shall not be less than 0.…
第 9.1.2 条For hydraulic calculations, the most unfavorable calculation pipeline shall be selected, and the flow rate of…
第 9.1.3 条For hotel buildings (Medium Hazard Class), the average sprinkler discharge density within the area enclosed b…
第 9.1.4 条For hotel buildings (Medium Hazard), the average spray density within the area enclosed by any 4 sprinklers i…
第 9.1.5 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.6 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.7 条The design flow rate of the hotel building (medium hazard class) system shall be determined based on the tota…
第 9.1.8 条The design flow rate of the hotel building (Medium Hazard Class) system shall be determined based on the tota…
第 9.1.9 条The design flow rate of the hotel building (moderate hazard class) system shall be determined based on the to…
第 9.1.10 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.11 条The design flow rate of the hotel building (Medium Hazard Class) system shall be determined based on the tota…
第 9.1.12 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.13 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined by the total flow rat…
第 9.1.14 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.15 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.16 条The design flow rate of the hotel building (medium hazard class) system shall be determined based on the tota…
第 9.1.17 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.18 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.19 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.20 条The design flow rate of the hotel building (medium hazard class) system shall be determined based on the tota…
第 9.1.21 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.22 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.23 条The design flow rate of the hotel building (medium hazard class) system shall be determined based on the tota…
第 9.1.24 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.25 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.26 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.27 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.28 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.29 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.30 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.31 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.32 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.33 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.34 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.35 条The design flow rate of the hotel building (medium hazard class) system shall be determined based on the tota…
第 9.1.36 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.37 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.38 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.39 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.40 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.41 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.42 条The design flow rate of the hotel building (Medium Hazard Class) system shall be determined based on the tota…
第 9.1.43 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.44 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.45 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.46 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.47 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.48 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.49 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.50 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.51 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.52 条The design flow rate of the hotel building (Ordinary Hazard) system shall be determined based on the total fl…
第 9.1.53 条The design flow rate of the hotel building (medium hazard class) system shall be determined by the total flow…
第 9.1.54 条The design flow rate of the hotel building (Moderate Hazard Class) system shall be based on the most unfavora…

Water supply

第 10.1.1 条System water consumption shall meet the requirement that all sprinklers spray simultaneously throughout the f…
第 10.1.2 条The operating pressure of the sprinkler at the most unfavorable point shall not be less than 0.05MPa.
第 10.1.3 条The system design flow rate shall be determined based on the total flow rate of sprinklers spraying simultane…
第 10.2.1 条The system shall be provided with dedicated fire pumps, and standby pumps shall be configured on a one duty/o…
第 10.2.3 条The head of the fire water pump should meet the working pressure requirements of the most unfavorable sprinkl…
第 10.2.4 条Fire pumps shall use self priming suction, and a strainer shall be provided on the suction pipe.
第 10.3.1 条When a temporary high pressure water supply system is used, a high level fire water tank shall be provided, a…
第 10.3.2 条The installation height of the high level fire water tank shall satisfy the working pressure of the most unfa…
第 10.3.3 条A check valve shall be installed on the outlet pipe of the fire water tank, and the pipe shall be connected t…
第 10.4.1 条Fire department connections shall be located outdoors at positions convenient for fire truck access, and the …
第 10.4.2 条The flow rate of each fire department connection should be calculated at 10–15 L/s. Hotel buildings (medium h…

Operation and Control

第 11.0.1 条Wet systems and dry systems shall directly and automatically start the fire pumps via the pressure switch ins…
第 11.0.2 条Pre action systems, deluge systems and automatically controlled water curtain systems shall be provided with …
第 11.0.3 条The fire pump control cabinet shall be installed in the fire pump room or a dedicated fire pump control room,…
第 11.0.4 条In addition to automatic control, fire pumps shall also be provided with manual control devices (hard wired d…
第 11.0.5 条The automatic start signals for fire pumps (pressure switches, flow switches, etc.) shall be capable of direc…
第 11.0.6 条The fire pump control cabinet shall be provided with a mechanical emergency pump start function, and shall en…
第 11.0.7 条The fire control room (panel) should be able to display signals such as water flow indicators, pressure switc…
第 11.0.8 条In premises with a fire control room, signals from the pressure switches, water flow indicators, signal valve…
第 11.0.9 条Fire pumps and jockey pumps shall be provided with local start/stop buttons; manual start/stop buttons for fi…
第 11.0.10 条The fire pump control cabinet shall be provided with a three position selector switch (auto, manual, stop) wi…

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