• 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...
    hamad.koroni
    last modified by hamad.koroni
  • Fire protection on Roof floor (Mechanical equipment )

    Dear,   As per NFPA, ist required to have a fire protection system (Fire hose cabinet, fire extinguisher,....  ) on the Roof floor for a Hotel where Mechanical types of equipment are located (AHU, Chiller,....
    hadialassal
    last modified by hadialassal
  • Creche in a business occupancy - Fire compartment

    Hi, we are converting a part of business occupancy in a creche. The egress path of creche also passing through the business occupancy seating area. Is there fire separation is required as per mixed occupancy classific...
    shantu_k04@rediffmail.com
    last modified by shantu_k04@rediffmail.com
  • 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
  • Powered operator for steel roll-up fire door

    I have an overhead roll-up steel fire door that we want to put a powered operator on.  What are the regulations in NFPA 80 that I need to watch out for?
    bconder
    last modified by bconder
  • Water sprinkler system in ESS project

    In battery energy storage system, it is recommended to install water sprinkler system as a fire protection measurement (NFPA 855).    But is there any risk of water eletrolyzed?If H2 generated, it may get m...
    603656408
    created by 603656408
  • NFPA 70, Article 690.31

    I need assistance with interpretation of the following article.  My contractor is using the following Code exception to omit labeling on PV string wires.  Their logic is that each string wire is is pre-fabri...
    tasha_mccarter
    last modified by tasha_mccarter
  • I am looking for up to date NFPA standards and training on UTV(side by side) operator training and policies

    In my organization we use side by side off road vehicles(UTVs) for all hazards response coverage during special events at city parks, venues, festivals, concerts, etc., in our urban areas.  We have zero trai...
    tyler_yarbrough
    last modified by tyler_yarbrough
  • A Better Understanding of NFPA 70E: NFPA 70E Equipment Labeling

    Section 130.5(H) has specific requirements for equipment labels when there are electrical hazards present. For some reason, users of NFPA 70E, Standard for Electrical Safety in the Workplace have troubl...
    ccoache
    last modified by ccoache
  • NFPA  70, Art 501.5 (E)

    In NFPA 70, Article 501.5(E), 1 For a Class I Division 2, Terminations - it says cables entering an enclosure required to be explosion proof shall be sealed at the point of entry.   A squirrel cage induction mot...
    dnowicki
    last modified by dnowicki
  • The 101 Life Safety code

    I have a suite that exit to the corridor that has smoke doors and are kept close by closers that requires greater then 5 pounds of force. Under 19.3.6.3.5 the statement says this is acceptable. I am being told they ar...
    restafford
    last modified by restafford
  • 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...
  • 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
  • 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
  • Commercial Outlets

    Can someone point me to the specific section of the NFPA 70 that requires 120V outlets in commercial applications to be upside down (with the ground mounted upward)?  The usual answer I get from electricians is s...
    fahrquad
    last modified by fahrquad
  • New Emergency disconnect question

    I just recently installed an UG meter socket and came into a home laterally to (2) 200 amp main breaker panels.  My permit was pulled after 1/1/2020 so I totally understand the new code enforcement of having an ...
    joepeltier99
    last modified by joepeltier99
  • Relocatable Power Taps

    Hi all. I keep going down the RPT rabbit hole after reviewing NFPA 1, UL 1363, UL White Book, and OSHA. I have come to the conclusion the NEC is silent on RPTs. All the references above seems to say hey, yup...
    carl.mister
    last modified by carl.mister
  • Are there any fire resistance rating requirements for steel structure supporting equipment on building roof in NFPA?

    The below section is Polypropylene Extrusion Building in Petrochemical Processing Plant. As I understand NFPA 5000 Table 7.4.1, Construction Type II-222 can be applied for this industrial building by the building heig...
    jhpark0325
    last modified by jhpark0325
  • Institutional Occupancy 1 hour partitions -75'SBC

    I am trying to understand the life safety requirements of an old legacy hospital at the time it was constructed. I have found references in the 1963 and 75' Southern Standard Building Code (SBC) requiring the Institut...
    steve.verner
    last modified by steve.verner
  • Learn key wildfire risk reduction skills: valuable training in Las Vegas March 12-13

    Register now for NFPA's Assessing Structure Ignition Potential from Wildfire two-day classroom training in Las Vegas, Nevada, on March 12-13. This class will provide valuable skills and knowledge to help you in y...
    michelesteinberg
    last modified by michelesteinberg