• Hollow shaft motors

    Why NFPA 20 suggests hollow shaft motor for fire pumps? Can anybody clarify.
    created by m-arunkumar
  • parking smoke system

    For parking smoke system, what is the max. number of smoke zone that can be connected to one smoke fan?
    last modified by amr.elkranfely
  • Fire extinguishers for generators??

    A building contractor is telling me that I need to install a fire extinguisher (properly sized/rated) within the enclosure of my exterior standby-power generator. I cannot find a requirement for this in NFPA 1, NFPA 1...
    last modified by thecodecoach
  • Water Pumping Stations

    Hi, In Which occupancy and hazard will cover the Water Pumping Stations as per the NFPA?. Please share your experiences. 
  • Hangers

    Looking in the NFPA13 2016 handbook and trying to find some verbiage about hanger spacing and location of hanger when we have pipe direction changes for a 1 1/2" , 2" , 3" , 4" and 6' pipe
    last modified by anthony.arellano
  • Galvinized Pipe and Fittings

    I have a concerned issue with using galvanized steel pipe (ASTM A53) and malleable iron fittings in a combination water supply to domestic water systems and fire sprinkler systems.   Galvanized pipe and fittings ...
    created by wileywilson
  • Sprinkler types

     I have in my hospital intermediate sprinkler head yellow bulb is this accepted by NFPA 13, OR we have to change the sprinkler head to Ordinary type red bulb 
    created by sabduljawad
  • Over side of the recommendations of NFPA 30

    Dear guys, I have a question about Foam protection for Warehouse Class IB. As requirement of Table Max Storage heigh 25ft, Max ceiling 30ft but in my project have Storage heigh 28ft & ceiling ...
    last modified by landung1087
  • how many hose outltest class I stand pipe

    #Nfpa 14 Section indicates for class I and III stand pipes they need to flow 500 gpm from the most remote stand pipe through the most remote 2 1/2 inch outlets. Does this mean that on the most remote interm...
    last modified by stoudtt

    Kindly clarify Black steel pipe can be used in the  foam concentrate line?   As per NFPA 16 2019    Clause  Foam concentrate  pipe and valve shall me made of one of th...
    last modified by hazmanmech
  • Pressure sensor - NFPA 20

    Good day, I wanna limit the shutoff pressure of the firewater pump to a value equal to 105% of the rated head without installing a PCV on the discharge manifold. A supplier offered a pressure sensor to control the shu...
    last modified by fridhi.mohamed
  • Centrifugal Pump Capacities in combinated fire systems

    Hi everyone, I am designing a system that has automatic sprinklers, deluge system, hoses and hydrants. Once I finish the hydraulic calculation of the systems working together, when I try to select the pump system, in ...
    last modified by gustavocanizzo
  • Gate valve

    Why should not use a supervisory switch not installed in the external network OS & Y gate valve ?   Regards  Hazman
    last modified by hazmanmech
  • Determining of Design Area in Hotel Building

    Hi,       i need expert opinion on subject mentioned, I m working in MEP contracting company as a mechanical engineer, I need to perform fire sprinkler hydraulic calculation for one of our pr...
    last modified by alisaif2012
  • Fire Protection Foreman Needed In The Cayman Islands

    Hirago is working with a top MEP company in the Cayman Islands. Our client has hired us to need to find an experienced Fire Protection Foreman to work in Grand Cayman. The Cayman Islands is only a 2-3 hour...
    created by hirago
  • fire hydrant testing

    hi. i am little bit confused about fire hydrant testing.  what is the criteria to select the number of hydrants to flow during testing.  as per AHJ, the minimum acceptable residual pressure is 50 psi. ...
    last modified by jmubarak
  • The Industry's First UL Listed Bacterial and Corrosion Inhibitor

    Introducing FSS ProGuard 295UL, the fire protection industry’s first, and only, UL Listed bacterial and corrosion inhibitor!   FSS ProGuard 295UL from Huguenot laboratories is a corrosion and bacterial inh...
    created by matt-francis
  • Fire Fighting system Requirements for Raw Material Store as a part of factory

    Greetings   Please advise about the firefighting system requirements for raw material store as a part of factory, can i follow the requirements related to factory's hazard classification, for example (Plastics f...
    last modified by eldusoky
  • pump

    prakash kumar
    last modified by prakash kumar
  • Balcony Notification

    NFPA 72: Has anyone found a reference that requires the balcony of a high rise to have notification?
    last modified by gonzalesfpe