• Electric rooms (MDB, Transformers and generator) occupancy classification

    I'm working on a conference hall project, According to NFPA 101, what is the classification of these occupancies?. Also, what is the classification of the projector and sound room, is it ancillary to predominant...
    last modified by imostafamagdy
  • UL555 listed dampers - smoke migration around the outside of smoke, and/or fire rated dampers

    Compare two 1' x 1' fire dampers. One is German made: Category:Trox 90 minute fire damper 1' x 1' - Wikimedia Commons  and one is domestic: Category:UL555 qualified 3h smoke and fire damper - Wikimedia Commons...
    created by ahering
  • Wheelchair Elevator Access During Fire

    A office manager is telling their staff to allow wheelchair bound persons access to the elevator during a fire as long as office personnel inform firefighters on the egress floor. This is a non-ambulatory office build...
    last modified by jpowell

    Dears,   Is there any restriction for new FM-200 System installation due to Montreal agreement?  in 2020
    last modified by lapahamed
  • Supervising Station

    Hello! good morning. I am new. This is my first post. I need your help please.   I want to implement a "supervising station alarm system" in the company I work for, but my boss ask me about the benefits of do it...
    last modified by juan.pablo.londono
  • NFPA 101- Table (Occupant Load Factor)

    What constitutes a space as regular Business Use or Concentrated Business Use? Under Concentrated Business Use, it says (f) See A., but when I turn there, I don't see an explanation. Am I missing something?
    last modified by awdenkins
  • Is OSB a class C rated interior finish product

    We have multiple independent projects where the builder has used OSB as an interior finish product to minimize damage to sheetrock. In all of these projects, per the LSC they must meet as Class C interior F...
    last modified by rfdacm02
  • How to test fire alarm system in a huge and large facility...

    Dear Experts, I have been researching on the net and read NFPA 72 for days. The thing that I try to find out is about testing fire alarm systems for huge and large facility with thousands detectors and modu...
    last modified by madandlucky
  • Protection of a Combustible Facade on a Roof

    A client is desirous of installing a Pitched Facade (1 in 12) of combustible nature: it will provide the effect of a Pitched Roof, while sitting on a flat Roof system. Is there a code or standard reference for any ty...
    last modified by cfps12065
  • Regarding the NFPA 101(2015)

    To expert whom it may concern,   According to the NFPA101(2015) section, "The lighting control device does not turn off any battery-equipped emergency luminaires, unit equipment, or exit signs. Tec...
    last modified by khlee
  • Are CO detectors required in hospitals, schools and C&I buildings in NY, MA, RI?

    Are carbon monoxide (CO) detectors/alarms required in the states of New York, Massachusetts, or Rhode Island for hospitals, colleges, K-12 schools, and commercial/industrial buildings that use natural gas? My company ...
    last modified by wellyn
  • COVID-19 restrictions, limited occupancy

    In Canada, Fire Inspectors are being asked to respond to complaints involving locked or obstructed exits, limited occupancy and physical distancing in box stores, grocery stores and restaurant pick up locations.  ...
    last modified by gary.mayorchak
  • Post COVID-19 building evacuation

    In preparation to having people going back at work, I'm searching for info on best practice and arguments for changes in building evacuations process with a more sensible aspect concerning health & safety for...
    last modified by eric.lajeunesse
  • 2013-2016 Edition, NFPA 13: (3)

    We have a Type 3 construction of a retrofit of 100 year old assembly building with concealed space below the 1st floor that meets all the requirements of The AHJ has questioned us, What is (3) Tight Construc...
    last modified by maasaicontracting
  • Mechanical duct -floor penetration

    All, I am working on a 3 story building. 3rd story is a attic with metal deck as its floor. But it is accessible and has general storage. I have a mechanical duct which penetrates the attic-metal deck floor and the 2...
    last modified by jadhav.25sumeet
  • ADA Requirements for basements

    We have a large library on a college campus.  The architect is adding space to accommodate 500 additional people in the basement as classroom space for ADA students. My question to them was how can we make sure t...
    last modified by bpellegrin
  • Combine Exit Stair Enclosure and Lift Shaft Pressurization System

    Is it acceptable to combine exit stair enclosure and lift shaft pressurization system in one pressurization system? The pressurization system will consist of one duty fan and one standby fan. There is a li...
    last modified by hamad.koroni
  • Fuel fired heating appliance

    I have a question regarding a code NFPA 1 section 1)  All fuel fired heating appliances shall be cleaned and maintained in accordance with the manufacturer s instructions, and shall be inspe...
    last modified by billm06880
  • Field relabeling

    Are there classes/ certifications for field labeling( Rated Door frames/ Rated doors) ? If so can you point me in the right directions. Thanks
    last modified by jwalker7
  • Dissecting the Details: NFPA 99 2015 and 2018 Editions Categories

    A wonderful discussion with my friend michael.civitello inspired this conversation.   Michael pointed out that moderate sedation is permitted in both NFPA 99 2015 and 2018 Category 2 and 3 medical gas systems.&#...
    last modified by quikag82