The sprinkler design must ensure that the flow does not exceed the system demand as stipulated in Table 6.4.7a.(2) and Table 6.4.7a.(3), throughout the installation. ** = the upper limit in column 6 of Table 17 of SS CP 52įor sprinkler systems with an unreliable inflow from the town mains to replenish the sprinkler tank, the effective tank storage capacity for the various hazards categories shall be as follows: TABLE 6.4.7a.(3): EFFECTIVE TANK CAPACITY FOR UNRELIABLE INFLOW OF LESS THAN 1.0m 3/min, OR WATER INLET POINT AT REDUCED LEVEL GREATER THAN 125mįull hydraulic calculation methods shall be adopted for the design of the sprinkler system pipework. Minimum effective capacity of storage tank, or 30 mins’ storage, whichever is greater The minimum water storage capacity of the sprinkler tank shall be capable of providing adequate water supply for 30 mins of the sprinkler pump operation.įor sprinkler systems with a constant reliable inflow from the town mains to replenish the sprinkler tank, the effective tank storage capacity for the various hazard categories shall be as follows: TABLE 6.4.7a.(2): EFFECTIVE TANK CAPACITY FOR RELIABLE INFLOW OF NOT LESS THAN 1.0m 3/min, & WATER INLET POINT AT REDUCED LEVEL OF 125m OR BELOW It shall not apply to new buildings, any building housing storage risks and chemical processes. This reduced water storage is only applicable to existing buildings of habitable height not exceeding 60m, and which have a hazard classification of Ordinary Hazard Group I, II or III under SS CP 52. 4 : Cubicle extent per compartment not exceeding 15000m 3 3 : Floor area per compartment not exceeding 4000m 2įigure 6.4.1a. (d) not more than 3 storeys interconnected.Īrea of compartment < 4000m² & cubical extent < 15000m³įigure 6.4.1a.
(c) cubical extent of each compartment < 15000m³ No sprinkler system is required if all of the following is satisfied: The system could be used as a trade-off for extended travel distances. However, building owners are at liberty to provide the sprinkler system to their buildings as an added fire safety. To overcome the problem, automatic sprinkler system should be provided to the whole building. In designing more than 3 floors per compartment, it would be breaching the compartmentation requirement. 3 storeys to form a single compartment up to a habitable height of 24m. (b) Engineered smoke control system is required to be installed.Ĭl.3.2.4a.
#Fire sprinkler system design cost code
(a) Compartmentation requirements under Chapter 3 of the Fire Code cannot be complied with, a building not exceeding 24m in habitable height having more than 3 –levels or excessive cubical extent or floor area. The provision of automatic sprinkler system is required in factory or warehouse under the following conditions: In designing 3 floors per unit, it would be contravening the compartmentation requirement under Table 3.2A. 1 : Residential building exceeding 24m habitable heightĬl.3.2.4 permits only residential maisonette or penthouse to have maximum 2-storey levels above 24m habitable height. Residential apartment/maisonette or penthouse unit being located within a commercial tower block exceeding 24m in habitable heightįigure 6.4.1a. Compartmentation requirements under Chapter 3 of the Fire Code cannot be complied with, for example, a building exceeding 24m in habitable height having 3-levels maisonette or penthouse units, orī. The provision of automatic sprinkler system is required in residential buildings under PG II under the following conditions:Ī.
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