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saleh
A 9 storey building with a one basement car parking. The fire pump room is located in the basement car parking and has got a jockey pump, an electrical pump and a diesel pump As per the NFPA 20, section 4.13.1.3 and 4.13.1.4 – fire pump room needs to be sprinklered. I understand that the fire pump room has to be fire protected with 2 hrs/1hrs… (Show more)
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samverabennett
If I have a ESFR system that ask for 250gpm for hose allowance and I add 100 at base of riser for inside hose. I have been using 150gpm outside and 100gpm inside(connect a base of riser or to another system) for a total of 250gpm.
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jaimelichi
Good day,   Could anyone please provide son guidance on why this underground section collapsed? This is one of the connections from the 8” loop to a riser system which services a sprinkler branch.  The pumps consist of two 2,000 gpm @ 130 psi.  Previous hydro tests where successfully completed to the entire loop, there are 11 sprinkler systems… (Show more)
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stevehanson
I know painted the devices (initiating and notification) is not allowed. Are the back-boxes they are mounted to allowed to be painted? I can't find anything other than the typical "Devices must be installed per manufacturer's instructions" kind of thing. Normally the instructions will be must be mounted to a listed/approved devices.     Thank… (Show more)
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kavir
Good day Forum   Do you have any recommendations for fire rated wires to be used in an area experiencing heavy sea blast? the bare copper connections are turning black and corroding.   thank you.
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vwoodworth
 This is regarding a new clubhouse/apartment building in New York state.  There will be a 2-hour use group separation between the A-3 Clubhouse and the R-2 apartment building.
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seb.nowak0
Good Morning All,   I would like to ask, when you calculate flow (base calculation) do you include coefficient or excess?   For example: CMDA 0.30gpm/ft2 (12.2 mm/min) x 2500 ft2 (232 m2) = approximately 750 gpm (2831 L/min) x 1.4 = 1050 gpm (3964 L/min)   1.4 is for disturbance flow excess/coefficient is this correct to add?    ESFR… (Show more)
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hantaaal
hi engineer i have deluge system for extinguishing and i want to know is there specific area  for deluge valve. i mean the maximum area can coverage by deluge valve. thanks 
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nav822nav
Hi, In fire water pump house the general installation of big fire water pumps is one side and the jockey pump is on another corner even if we take the suction from the same header and there is a lot of space left in between the big fire pumps due to the piping, can we install the jockey pumps in between the two big fire pumps if there is space… (Show more)
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firesafetypunjab
Hello to every one,i have a question that if a Highrise Apartment building has sprinkler system just in area out side apartments.Is it enough as per NFPA 13?or all apartments of highrise building required sprinkler in inside areas of apartments.Thanks
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