• NFPA 13 (2013) Section

    A sprinkler contractor has installed extended coverage sprinklers with the deflectors 16 inches below the concrete ceiling of a parking garage.  Construction is unobstructed.  They referenced NFPA 13 (2013) ...
    last modified by nfpa@omfps2426.com
  • smoke detectors in dormitory bathrooms

    Looking for an exception to NOT install smoke detection in a dormitory bathroom which has automatic sprinkler system , bathroom has a door 
    last modified by johnb@housing.ufl.edu
  • heat detection in place of smoke detection in a dormitory loungs/kitchen

    can a heat detector be installed in a dormitory lounge that has a cooking appliance instead of a smoke detector?
    last modified by johnb@housing.ufl.edu
  • looking for an exception to install a heat detector instead of a smoke detector in a dormitory lounge

    Can a heat detector be installed in a dormitory lounge with a cooking appliance rather than a smoke detector ?
  • This question is about sizing a tank for fire protection

    We have a site with no water supply and all fire protection will need to come from an above ground storage tank. The question is, when sizing the tank do you need to add the site fire flow requirements and the fire sp...
    last modified by rpfeiff
  • Sidewall Sprinklers

    Any issues with installing sidewall sprinklers under exposed corrugated steel decking if direction of spray is parallel with the flutes or is the decking considered a smooth flat ceiling regardless? 
    last modified by nesselle
  • Water supply mains as per NFPA24?

    Dear everyone, does any one know the arrangement about the fire mains and its connections with the individual buildings, I have the two questions: 1.Does the water mains must be a circle or ring, is it the mandatory ...
    last modified by zhangya
  • Foam Delivery Time Calculations

    Hi All,   I'm currently working on a project where I need to calculate the foam delivery time to the last nozzle. I used the velocities resulted from the hydraulic calculations. The calculation was done based on...
    last modified by waelio
  • NFPA 850, 2020 edition

    Hello, my name is Martin. With reference to the latest edition of NFPA 850 Chapter 6 & 9.  it seems that one of the various fire suppression systems mention under item and 9.7.9 is Foam-wate...
    last modified by mch
  • Special Stages (360 stages)

    Context: Fire protection to a 360° Stage According to NFPA 101, the stage and the auditorium seating area shall be completely separated by a proscenium fire curtain/wall.   This should be applied the same ...
    last modified by ftorres
  • NFPA 13

    What is the correct way to handle the following situation:  Fully sprinklered building with multiple occupancies all off of the same sprinkler riser.  Should each occupancy have a flow switch with no flow sw...
    last modified by troy.long@salina.org
  • NFPA 13D PEX

    Does  2019 13D mean that PEX is not allowed to be used if a house has an FDC? The local AHJ requires FDC's on single family homes, and I'm wondering if I am allowed to use PEX if the manufacturer gives me...
    last modified by mountainfireprotection1
  • Can Window Sprinklers be used for Proscenium Water-Curtains?

    Can Window Sprinklers be used for Water Curtains for Proscenium Openings?   According to NFPA 101-2018, the proscenium opening shall be protected by a listed fire curtain or an approved water curtain ...
    last modified by ftorres
  • Sprinklers Under fixed Obstructions Over 4'

    With respect to NFPA 13 clause When installing sprinklers under fixed obstructions over 4' in width the sprinkler shall be located not more than 3" from the outside edge of the obstruction. Does this mean...
    last modified by rperkin9
  • 2016 NFPA 76 Telecom Room Compartmentalization

    Would like to get 2 - hr rated Telecom (Lan) Rms' enclosure by way of Section 8.3: Compartmentalization, and Section 8.3 states: "The telecommunications facility shall be separated from other occupancies wit...
    last modified by jsworks
  • Pressure Sense Lines

    Dear Sirs, please permit to formulate two questions regarding to Pressure Sensor Line for jockey Pump and Main Fire Pump. Is it mandatory in the standard to install the two check valve DN 15 mm (1/2")  with the ...
    last modified by rodriguez@colasrail.com
  • Installing a FireRay 5000 Beam Detector

    Hi, this is my first time installing a beam detector, I have one FireRay 5000 Simplex (5000-103) to play around with. https://simplex-fire.com/en/us/DocumentsandMedia/4098-0042.PDF  I have some questions h...
    last modified by leliex

    Looking for CODE Reference for FIRE-STOP for SMU wall and cement Floor Penetrations , Annular spacing, rated and non-rated walls.
    last modified by anthony.arellano
  • Regarding NFPA 303 in Fire Extinguisher walk distance

    I have a new customer that wants to get his marina into compliance as to his fire extinguisher program.  This dock has sections that come off a main dock and encompasses around 4000 ft.  Generally its p...
    last modified by craig.hiser@yahoo.com
  • Private Hydrant

    This is probably a dumb question,  I have an existing Country Club that is fully sprinklered with a remote FDC, my water supply is approximately  2000 feet away,  they are building a new 2 story pool h...
    last modified by jgresch