How to choose the sprinkler head of the automatic sprinkler system?
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frequently asked questions
1. In places without suspended ceilings, when the water distribution branch pipe is arranged under the beam, the vertical sprinkler head is not used;
2. The construction process is not in accordance with the requirements of the design documents, and ordinary sprinklers are installed in the parts that need to be installed with quick response sprinklers;
3. Commercial complexes and other tall space places such as atriums and pedestrian streets that exceed 8m are not selected as required to select large flow coefficient sprinklers.
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Regulatory basis
Articles 6.1.1 and 6.1.3 of the Code for the Design of Automatic Sprinkler Systems (GB50084-2017).
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Reference method
Before on-site construction, the construction unit should do a good job of fire protection technology disclosure, and do a good job of construction self-inspection; the supervision unit should increase the supervision in the construction process, and the sprinkler head that is not purchased and installed in accordance with the requirements of the specification shall be required to be rectified in a timely manner.
Therefore, the following reference practices can be adopted:
1. According to the construction drawings, for those who are not clear whether the deepening or hardcover procedures are involved, the construction process should maintain communication with the design unit in a timely manner, and carefully screen the nozzle selection;
2. Replace the sprinkler according to the specifications and models required by the design drawings, and if the actual installation specifications and models of the sprinkler head can be used in general places, you can communicate with the design unit, and the design unit will issue design changes according to the actual specifications and models of the sprinkler on site;
3. If only the flow coefficient does not meet the requirements of the specification, the designer can be asked to verify whether the working pressure of the sprinkler can be increased within the appropriate range to achieve the same effect of the flow coefficient K≥115 sprinkler.
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