• Galvanized pipes and black pipes in dry pipe systems

    Dear All, Is there a requirement of NFPA13 to use galvanized pipes for dry pipe systems of CMDA sprinklers? I have a design of preaction single interlock system with standard spray sprinklers k115 with 12,2mm densit...
    last modified by jdrzewicka
  • ESFR and Steel Joists Obstructions

    I didn't see any changes to NFPA13-2019 in regards to the testing done by Palenske and Fletcher on steel joist bridging obstructions.  Palenske and Fletcher concluded "K17 ESFR sprinklers obstructed by a 1.5-inch...
    created by dcorns
  • Fire protection systems for Hotel

    I would like to ask the following as regarding the fire protection systems for a Hotel not classified as high rise building:\ - As per NFPA 101 - New hotels not classified as high rise building require the protection...
    last modified by tanousnaim
  • No of hydrants and hose cabinet

    we have a 2 rise building. Can anyone suggest how many fire hydrants, fire hose cabinets to be provided.? Hazard is ordinary.
    last modified by ananthars90
  • What type of phone lines can a fire panel have?

    I work for a school district and we are building a new High School.  The design of our new fire alarm system/panel is going to use only 2 cellular phone line for emergency communication.   I am use...
    created by sgagliardi19
  • Replace FM200 with Novec 1230?

    So where I work twe have an FM-200 system that was recently triggered for the first time in years and we now have to refill the cylinders. I was told by a coworker that I should consider replacing the gas with a non-H...
    last modified by nsalvatore
  • Can ESFR Sprinklers be separated from Standard-Response Sprinklers with just a baffle?

          Two questions.      How may I separate ESFR sprinklers from Standard-Response Sprinklers that are fed by the same system riser? We are considering installing standard-response sprin...
    last modified by mshelton
  • When did "fire pump phase reversal" and "fire pump EM power" become required to be monitored?

    I know monitoring those two items hasn't always been required.  I can only go back as far as 1996 online.  It was required in that Edition of NFPA 20.
    created by kevinbliese

    Application is for an underground Utility Tunnel, 7Km long. Tunnel has (or it is suggested to have) 2 compartments, one for wet services (potable & irrigation water, district cooling) & one for dry services (...
    last modified by moisidis
  • What flow rate should I consider for hose conections in an sprinklered Building?

     Hi! hoping you can help me with this question,   I´m doing the hydraulic calculation in the last floor of a building, and the entire building is protected by an sprinkler system. What flow rate shoul...
    last modified by mosuna
  • Foam System Discharge Duration in accordance with NFPA-418

    Hello, We are designing a helicopter deck integrated fire fighting system (in-deck nozzles) according to NFPA-418 2016 for a offshore installation. The deck integrated nozzles are UL listed and approved by civil avia...
    created by gnanesh
  • Does the 2 times a year annual inspection requirement for commercial kitchen fire suppression apply to non-commercial applications.  A church, for example.

    Over 5 years ago I became responsible for my church's buildings.  That included insuring that our building's fire suppression equipment was in compliance with code.  The fire inspector in Pickens, SC, briefe...
    last modified by cdooleyone
  • ESFR Warehouse storage

    I have a warehouse that is wanting to store rolls of paper 20ft in height and no rack storage.  The warehouse has 22.4k ESFR heads do I have any restrictions on this for the system to support that kind of storage?
    last modified by alsmith
  • NFPA 25

    NFPA 25- Is there a NFPA 25 form that is available to give to tenants?
    created by alsmith
  • Abandoned motel renovation...suppression?

    Does this building require a suppression system?    Conditions:       Existing motel built in the late 1960s    Abandoned (4-6 years)      Unde...
    last modified by chris.dean
  • Can condensation occur in a dry system?

    created by pbmackey
  • Multi use piping

    Is there a section of code which addresses the use of a fire sprinkler piping system on an occasional basis as a utility water system?   in our facility, we have a number of fire headers located around the plant...
    last modified by crazyjpeters
  • NFPA 25, 2011 edition,

    NFPA 25 , 2011 edition, states, “In systems where the sole water supply is through a backflow preventer and/or pressure reducing valves, the main drain test of at least one system downstream of the devi...
    last modified by tjulka
  • Hydrant Flows Highrise buildings

    With respect to hydrant Fire Flows for High-rise buildings that are sprinklered to NFPA 13.   I have researched a Multiple of standards NFPA 13,14,24,1142,and 101 in an attempt to locate recommended hydrant flow...
    last modified by pwalker
  • Are Sprinklers required in Cupola's

    Working on a project which is an existing building (old late 1800s building). It's being converted into 97 apartments. Building is wood construction. The building previously used Cupola's and as part of the historic r...