• NFPA 13D PEX

    Does  2019 13D 5.2.2.4 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...
    mountainfireprotection1
    last modified by mountainfireprotection1
  • how to protect an oil deposit?

    I must protect a structure where there are almost 20,000 liters of oil. This product is inside metal tanks (200 liters each) and plastic containers (5.000 litres each). I am using NFPA 11 2016 edition, but I cannot i...
    gustavocanizzo
    last modified by gustavocanizzo
  • Manual release requirements as per NFPA2001

    Dear, everyone! According to NFPA2001 clause 4.3.3.6.2 (please see as follows), i understand that once we operate the manual control, the whole system will working forward completely. But i have the two que...
    zhangya
    last modified by zhangya
  • Hydraulic Calculation for Private Network, Tank Size

    Hi,   I have a private fire network with fire tank, which has set of buildings not exceeding 2 floors (21 meters), we have combined fire network with manual hose cabinets and automatic sprinkler system in buildi...
  • NFPA 13 - Concealed spaces

    NFPA 2013 Section 8.15.1.2.2 - uses the term limited access. Is there a definition for "limited access" or is left up to interpretation by the AHJ?   Thanks
    ctriming
    last modified by ctriming
  • NFPA 2001

    We have several older clean agent systems that our new inspector are failed because there is no disconnect switch per 4.3.6.1.  As stated they are older systems, two were installed in 2009 and the other in 2006. ...
    cshelton
    last modified by cshelton
  • NFPA 13/2019  2:12 roof and cieling

    Good Morning, please in the NFPA 13 2019, have a Question, in the 14.2.3 (ESFR) it talks about a maximum slope of 2:12 for the roof and ceiling, but if I have larger slopes, I can place only the sprinkler pipe in...
    franklinvillavicencio
    last modified by franklinvillavicencio
  • Two different occupancy building

    I have a question in regards to an existing building with two occupancy one is main occupancy group B division 2 and requires no sprinklers. The building has a assembly room which is classified as minor occupancy grou...
    juenriq
    last modified by juenriq
  • Silicone RFID Fire Hydrant Bonnet Sleeve

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    I have a newly patented product to help first responders and municipalities find and upkeep fire hydrants. I was recently awarded a patent by the USPTO for a stretchy Silicone Fire Hydrant Bonnet Sleeve with RFID comm...
    ozzieozburn
    last modified by ozzieozburn
  • 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...
    rerickson
    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...
    sslfire
    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.
    hoaboardjv
    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...
    istiaque.emcs
    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...
    zhangya
    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...
    larryhoodmail
    last modified by larryhoodmail
  • Stable Liquid as per NFPA -30

    As per NFPA-30, Table 22.4.1.1(a) 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...
    rath
    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...
    zhangya
    last modified by zhangya
  • Hops

    What commodity would you consider hops?
    caleb
    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...
    leliex
    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...
    rhythmsinc
    last modified by rhythmsinc