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Now there is an uninterrupted power supply room, which powery for ICT secondary euqipments, does this room need a clean agent fire suppression system ? or just a normal wet suppression system will be enough ?

Thanks a lot for you kind help!

Hi, all Are there any NFPA terms stipulating the conditions of using either natural or mechanical Smoke extraction system? For example,as per my local fire standard, a mechanical smoke extraction system shall be used if the floor area exceed 50sq meter if without windows, so I wonder are there...

thank you very much!

@UFT12 thanks a lot for your reply, but should I change the size of upstream confluent pipes due to added obstruction sprinklers?

What does it means for "NFPA 13: Sprinklers under the obstruction shall not be required to be included in the hydraulic calculation of the ceiling sprinklers", so I can just add some sprinklers under obstructions from branch without sizing change? if now I need to add some sprinklers under some...