• How can I get Residual point in the water supply graph?

    If I have a preexistent pump and it's necessary to verify it, it is correct to consider residual flow and residual pressure as 150% of nominal flow and his respective pressure? Or this point is the end of pump graph? ...
    last modified by gustavocanizzo
  • What does NFPA say regarding the installation of the automatic sprinkler system in an existing textile factory?

    A textile factory qualifies for the recommendation for the automatic sprinkler system as per NFPA. But since the hardware modifications are going to be rigorous, is there an alternate solution for this problem? Can we...
    last modified by saroosh.khan
  • Gravity Waste Chutes

    This question is in regards to NFPA 82 code section  This code section requires that "In addition, a sprinkler shall be installed within the chute at alternate floor levels in buildings over two storie...
    last modified by mstossel
  • Clarification required in water supply calculation in Aircraft hangar fire protection as per NFPA 409

    Details of the Aircraft Hangar: We need to protect an Aircraft Hangar - Group 1 as per NFPA 409. Our protection scheme is Option 1. Foam water deluge system shall be installed under roof ceiling as primary prote...
    last modified by shivaji.santhanakrishnan
  • Pump room sprinklers

    In a fully sprinklered building, is it the intent of the code not to have to sprinkler a pump room housing an electrical driven fire pump when the total encloser is 2hour rated?
    last modified by maryd
  • NFPA 1221, 4.5.2

    The question: NFPA 1221 4.5.2, The communications center and spaces adjoining the communications center shall be provided with an automatic fire detection, alarm, and notification system in accordance with NFPA 72. &...
    last modified by cjajh
  • UPS Alarm tied to fire alarm panel

    Is it allowable to tie a low battery alarm for a computer room UPS into a fire alarm system to allow the UPS alarm to be transmitted to the monitoring station?  The purpose of this is to notify site personnel, du...
    last modified by keith.knotts
  • NFPA 13 - Closed Loop Systems

    In NFPA 13 Section Figure A.23.1.5 a closed loop system with sprinkler piping entering into Heating Ventilation and Air Conditioning Equipment is shown. In what specific instances is a closed-loop system required and ...
    last modified by tyler.mobley@outlook.com
  • Fire Protection Design Basis Study Reprot

    Hi Team,   My organisation requested a Fire Protection Design Basis Study report for the Fire Protection System. Where as the report identified with: Water Demand Calculations w.r.t to area considered Foam/Wat...
    last modified by sudheervarma.safe
  • Class II Standpipe requirement for light hazard occupancy

    I'm currently working on designing wet sprinkler system for a Dormitory of Ground and First Floor "Light Hazard Occupancy". The Building is fully sprinklered as per NFPA 13R-2016. The height of the First Floor is less...
    last modified by waelio
  • Pressure Relief Valve according to NFPA 13-2016 7.1.2

    I have a wet pipe system that is fed from an Electric fire pump rated 1000 gpm @100 psi. Is it still necessary to install a pressure relief valve in accordance with NFPA 13-2016 7.1.2 despite the fact that I won't hav...
    last modified by waelio
  • Portable Church & Sprinkler System

    Hello! We are helping a portable church set up their space in an elementary school. The consultant is suggesting "scuba wall" a curtain that hangs from the ceiling, attached by magnets to the drop down ceiling grid. O...
    last modified by juliekane101

    Dear Expert, we would like to design sprinkler system for Bio gas storage, if following NFPA13, what is the density should I use? Please refer to products photo attached Thanks
    last modified by htvalves
  • Automatic Extinguishers

    In one of my project consultant is asking automatic extinguishers in car parking area. For each car we have to fix one extinguisher on the ceiling and in case of fire the glass bulb (similar to sprinkler) will...
    last modified by abdulrafay80

    In Combined Sprinkler/Standpipe System as per NFPA 14 we are taking standpipe connection before Zone Control Valve assembly which means before flow switch. So In case of stand pipe operation ZCV assembly flow switch w...
    last modified by abdulrafay80
  • Minimun size for standpipes

    Good day, I need someone help me with the minimum size for a class II standpipe and branch lines. According to NFPA 14 7.6.1 class I and class III standpipe shall be at least 4 in. I have a class II design (by others)...
    last modified by maykol8850
  • NFPA 22 dual refill lines

    Could someone please help clarify what exactly is meant by "dual refill lines" in the following section of the NFPA 22:   14.5 Break Tanks.... 14.5.3 Refill Mechanism. The refill mechanism shall be listed an...
    last modified by federicod
  • Fire Protection System

    Sir, we are making Ready mate Garments  Building, actually our Building Ground floor level 2 feet above from Ground level. if we consider 2 feet than our building height is 76 feet. we are want to accommodate o...
    last modified by hasib.hj1325
  • Distance between two fuel stations / pumps

    Hi Experts,   Need NFPA reference about the distance between two fuel stations carrying Petrol and diesel, in populated congested area, what is standard distance between two fuel station, please share NFPA code ...
    last modified by yousafimran_353
  • Test Pressure of High Pressure CO2 system distribution pipes

    For the high pressure CO2 system, especially for the distrIbution pipe system. What is the pressure test requirement according to NFPA? What is the test pressure value and shall we do air pressure test or water pressu...
    last modified by 603656408