• NFPA 2001 ¿What would be my correction factor if my equivalent altitude is over 14,000 ft?

    In Chapter 5 in NFPA 2001, edition 2018  There is a table, Table 5.5.3.3 Atmospheric Correction Factors.   ¿What would be my correction factor if my equivalent altitude is over 14,000 ft? ...
    cperez_0
    last modified by cperez_0
  • What sprinker ITM software do you use?

    Just want some feedback from other sprinkler companies on what software they are using. 
    hfontana
    last modified by hfontana
  • RED HUMEDA - COLOR TUBERIAS

    BUENOS DIAS, EN ALGUNA NORMA NFPA INDICA LA OBLIGATORIEDAD DE PINTAR LAS TUBERIAS DE LA RED DE AGUA CONTRA INCENDIOS DE COLOR ROJO ?
    jcsalas
    last modified by jcsalas
  • Metal Mesh on Attic Floor

    I have a situation with a very old building.  I am in Ontario Canada so we use our own building code, not IBC. The building has a complete wet sprinkler system throughout with the exception of the attic, which h...
    jpotvin
    last modified by jpotvin
  • Using SLC module to trip Communicator

    UL 864 (in section 54) has very stringent requirement for the use of the alarm contact to trigger central station communication method and not a control module on the SLC.   This is due to a requir...
    brian.lukus
    last modified by brian.lukus
  • Selection of k factor for sprinkler and water demand

    Hi. My question is regarding Sprinkler K Factor selection.   Can we go with pendent sprinkler of K-5.6 for a small storage of 25 x 20m in a commercial building where material like electric meter and other electi...
    manojdagarwal
    created by manojdagarwal
  • Pump type and elevation

    Hello   Does the NFPA mention whether one pump is sufficient for protection? is it required as per the NFPA to install a full set of pumps (Electrical, diesel backup and a jockey) for all cases ? what's the...
    kaldodi
    last modified by kaldodi
  • Is the depressurization start permitted or not of the fire electrical pump?

    Hi, everyone, good day! The general depressurization start mode of motor is soft start and  star-triangle start, for fire electrical main pump and jockey pump, are these start modes permitted or not in...
    zhangya
    created by zhangya
  • Question for NFPA2001 Clause 1.5.1.5.3?

    Dear, everyone!  In the clause 1.5.1.5.3, it says if "design concentration exceeds that approved for use in normally occupied spaces ",we shall take FOUR measures(see below) when design, howe...
    zhangya
    last modified by zhangya
  • Maximum velocity of 20 ft/s in fire protection sprinkler piping systems. Is this acceptable?

    Per NFPA 13 (2020 edition) and earlier versions, the maximum velocity limit in the fire protection system pipings has not been specified to be limited up to 20 ft per second.  Since it is unspecified, it follows ...
    rick.nunez.3000
    last modified by rick.nunez.3000
  • What are listing report and listing organization?

    Dear, everyone, when I reviewed the NFPA 2001 chapter 9, I am confused about the listing report and listing organizations, dose anyone can explain for this question? Thanks a lot!   9.12 Approval of Installations...
    zhangya
    created by zhangya
  • 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...
    rpfeiff
    last modified by rpfeiff
  • Non-Restorable Fixed Temp Expired Heats

    Does anyone know of a company in the New England area that tests (lab tests) fixed temp non restorable heat detectors that are expired? Never had a customer come back and want this option but here we are .  No r...
    kerrie
    last modified by kerrie
  • Single Row Rack Sprinkler Line Location

    I am installing sprinkler protection within single row racks. The protection is in accordance with NFPA 30 Table 16.5.2.3  and in accordance with layout 16.5.1.10 - layout 3. Layout 3 calls for a single line of i...
    steve@mackfire.com
    last modified by steve@mackfire.com
  • Pilot valve in fire pump Diesel

    When it is necessary and compulsory to use a pilot valve in a Diesel fire equipment installation?
    gerencia@goodgroup.com.co
    last modified by gerencia@goodgroup.com.co
  • Is there any NFPA Clause which makes it mandatory (rather than suggestion) to place the FACP (FACU) near the entrance for Industrial Buildings/Workshops?

    We are working on a Port Project where we have multiple Industrial Buildings/Workshops. The Workshops and Buildings have unmanned pre-fabricated small Cabinet Rooms inside them which have controlled temperature (HVAC/...
    usmanrathore
    last modified by usmanrathore
  • On fitting/s directly connected to a sprinkler: When could the fitting/s be neglected in the calculation of pipe friction loss?

    Reference: NFPA 13 (2019 Edition) 27.2.4.8 Friction Loss 27.2.4.8.1 Pipe friction loss shall be calculated in accordance with the Hazen–Williams formula with C values from Table 27.2.4.8.1, as follows: (9) Frict...
    rick.nunez.3000
    last modified by rick.nunez.3000
  • Fire Pump/Underground water storage tank

    Anyone have any suggestions on a fire pump being located inside a building and 70000 gallon tank under a building.There is no direct access into the room. Everything I am seeing is that the room needs to be 2 hr rated...
    ggerbasi
    last modified by ggerbasi
  • On fitting/s directly connected to a sprinkler: When could the fitting/s be neglected in the calculation of pipe friction loss?

    Reference: NFPA 13 (2019 Edition) 27.2.4.8 Friction Loss 27.2.4.8.1 Pipe friction loss shall be calculated in accordance with the Hazen–Williams formula with C values from Table 27.2.4.8.1, as follows: (9) Fr...
    rick.nunez.3000
    created by rick.nunez.3000
  • Window Sprinklers

    Hello, I have an enclosed stairwell with glass floor to ceiling (not rated glass) and need to install window sprinklers on both sides. Does each side have to be on a separate zone or can they be connected somehow an...
    jpotvin
    last modified by jpotvin