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Hello Everyone , I would like to know how compressor capacity for pre action system is calculated and What are the regulation specified in NFPA while selecting a compressor for preaction system ? Is there is any time period mentioned to fill the pipe with air ?

Hi , I am working in fire fighting field but now i am planning to shift to hvac field .I don''t have much idea about this system .Can any one share about material that will be helpful to beginners like me..

What more information you need ? The material stored inside the rack is wooden furniture.

Hi, Which Sprinkler should i propose for a ware house having Height 11.5 meter and Storage Height is 8.5 meters .The Material is stored inside multiple row rack with wooden pallets .Asile Width is 4.6 m and clearance is 75 cm.

Hi friends.. On what basis we propose ESFR Sprinkler in warehouse ?What are minimum criteria to select to ESFR sprinkler system while designing a ware house ?

The Link which you provided does not work..No result is shown .No where does the link gives an answer to my question..

Hi Orator , From NFPA 14 7.10.1.1* Minimum Flow Rate. 7.10.1.1.1 For Class I and Class III systems, the minimum flow rate for the hydraulically most remote standpipe shall be 500 gpm (1893 L/min), and the calculation procedure shall be in accordance with 7.10.1.2. 7.10.1.1.2* Where a...

Hi Every one , On what basis do we select the design concentration for room to be protected with FM 200. Normally we used to take the design Concentration as 7% at 20 C .Please provide an answer on the basis of NFPA 2001.