• Double interlock preaction system - full building coverage

    Are there any occupancy restrictions where a double interlock preaction system may be used?  For example, could an entire hospital (Institutional) provide sprinkler coverage with a preaction system?  It appe...
    last modified by rerickson
  • Fire Protection requirement for Conveyor Belts

    I have a question regarding the requirements to protect conveyor belts. Is there any requirement for fire protection of conveyor belt other than NFPA that are regarding coal mines? I want to know whether NFPA have th...
    last modified by sslfire
  • Wireless Fire System Monitoring - The Way To Go?

    How common are wireless fire monitoring systems & what are advantages & disadvantages? We're a townhome community & we've heard some negative stories.
    last modified by hoaboardjv
  • Underground piping requirements as per NFPA

    Hi All Its Istiaque from Bangladesh. In one project where from fire pump room to building fire main pipe have to run beneath the ground, I have read in some articles that microbiologically influences corrosion happens...
    last modified by istiaque.emcs
  • How many enclosures or rooms can be protected simultaneously as per NFPA2001?

    Dear everyone, as the NFPA2001 didn't give the specific discription about multi-zone system and did't use this phrase words such as "multi-zone" or "multi-room", but, according to the general comprehension about the s...
    last modified by zhangya
  • Fire Sprinkler Systems "Tiny House"

    Has anyone ever been required to sprinkler a rental Tiny House.A local developer is planning to develop a 405 space RV Park that will include some 499 s/f manufactured Tiny Homes as overnight rentals. All are on fixed...
    last modified by larryhoodmail
  • Stable Liquid as per NFPA -30

    As per NFPA-30, Table location of above ground storage tanks storing stable liquids is provided. Please let me know what is the meaning of stable liquid? and from where I can find out for a particular liqu...
    last modified by rath
  • How to design the "Dirt Trap" expressed in NFPA2001?

    Hello, everyone, good day! As the new provisions as NFPA 2001 (2018) stated as follows, I  have two comfusions regarding when designing, firstly,how many locations should be arranged for pipe network sy...
    last modified by zhangya
  • Hops

    What commodity would you consider hops?
    last modified by caleb
  • Question about "Zones"

    I have a job, its updating sensors, wiring and FACP, it currently has 8 zones and old IDC stuff. They want everything new, and also they want a FACP with 10 or 12 zones.    I have a new SImplex FACP 4007-91...
    last modified by leliex
  • Residential Sprinkler Remote Areas per NFPA 13

    We have a project that is a hotel. Typical floors have small residential hotel dwelling units that require between two and three residential sprinklers for adequate coverage per the sprinkler Listing Criteria and NFPA...
    last modified by rhythmsinc
  • 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
  • What are small companies doing to provide affordable health insurance to 10 employees or less?

    We are a small fire suppression and alarm company.  What are small companies doing to provide affordable health insurance to 10 employees or less?
    last modified by admin@proshieldfire.com
  • Fire Water Requirements

    Does anyone know the requirements about fire water quality, what kind of water can be use for fire extinguishing, could someone recommend the minimum requirements in the NFPA standard for this issue?
    last modified by zhangya
  • Traverse flue spaces

    Hi,   I have a question about traverse flue spaces. In NFPA 13 is " Nominal 6in traverse flue spaces between loads an at rack uprights shall be maintained in single-row, double-row and multiply-row ...
    last modified by tmalanowicz
  • Design criteria CMDA solid pile up to 3.6 m

    Hi, I need some advice regarding the categorization and the design criteria for CMDA sprinklers of solid pile Class I to IV  storage up to 3.6 m (the building is a warehouse). The issue is that in NFPA 13 2016 ed...
    created by vantoniou
  • conversion from gpm/ft² to mm/min

    Good morning, I am an engineer who deals with fire-fighting systems in Italy. Reading the NFPA 13 standard, I realized an error (I hope so) in the conversion between gpm / ft² and mm / min in Tables 18.4 (a), 18....
    last modified by b.cristallo
  • How to handle hanger and the support for  clean gas system according to NFPA 2001

    When i design the IG541 gas extinguishing system, there is no specific requirements about how to design the hanger and support? Now, for me there are two choice below, i don't konw how to deal with this issue: 1. Usi...
    last modified by zhangya
  • ESFR k 25.2 spacing

    Hi,   I have an existing ESFR system k=25.2 pendent, some sprinklers spaced less than 2.4m around 15 cm what is the best solution for this case? knowing that it is impossible to move any branch.   thanks,
    last modified by yousef_alshayeb
  • Tank heater or no?

    My question is in the NFPA22 Standard for water tanks for private fire protection. 2018 edition. In chapter 16 Tank Heating. "16.1.1 Tanks that are subject to freezing shall be heated." "16.1.2* The heating system ...
    created by hogatefire