• Dry sidewall sprinklers acceptable for walk-in cooler and freezer?

    I have been assigned a task to add sprinkler coverage to a walk-in cooler and freezer. These walk-in boxes have been moved from one facility (not sprinkled) to another facility (fully sprinkled). There isn't much room...
  • Define door release mechanisms.

    Can/will someone from the NFPA define/explain exactly what is ment by the term the releasing mechanisms of a door shall not required more than one motion. IE is the turning/twisting of a door knob on an egress door an...
    last modified by lsteffens57
  • Don't delay! February 28 deadline to apply for $500 Wildfire Community Preparedness Day project award!

    Could you use a little financial help for a  Wildfire Community Preparedness Day project?  Don't delay, apply today!  Get funding for a project or event on May 2 during NFPA's national campaign, thanks ...
    last modified by michelesteinberg
  • Regarding NFPA 303 in Fire Extinguisher walk distance

    I have a new customer that wants to get his marina into compliance as to his fire extinguisher program.  This dock has sections that come off a main dock and encompasses around 4000 ft.  Generally its p...
  • 2016 NFPA 76 Telecom Room Compartmentalization

    Would like to get 2 - hr rated Telecom (Lan) Rms' enclosure by way of Section 8.3: Compartmentalization, and Section 8.3 states: "The telecommunications facility shall be separated from other occupancies wit...
    last modified by jsworks
  • Private Hydrant

    This is probably a dumb question,  I have an existing Country Club that is fully sprinklered with a remote FDC, my water supply is approximately  2000 feet away,  they are building a new 2 story pool h...
    last modified by jgresch
  • 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...
    last modified by dnowicki
  • 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 ...
    last modified by joepeltier99
  • 210.52(B)(1) receptical outlets served

    Is 210.52(B)(1) saying the two or more 20 ampere small appliance branch circuits required by 210.11(C)(1) will supply all outlets covered in 210.52(A)? Or does shall serve all wall and floor receptacle outlets covered...
    created by charlesvanmeter
  • 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?
    last modified by bconder
  • Testing of a non-UL certified transfer switch prototype

    Hello all!   I have designed and built an automated battery transfer switch that currently fits into a 70 AMP breaker box. The current setup is home breaker box -> Romex -> device -> Romex -> breaker...
    last modified by jeremiah
  • Does attaching a snow plow to a 100LL aircraft refueler vehicle violate any fire regulation codes?

    I have this suspicion that attaching a snow plow to an aircraft refueler truck is not permitted, especially at a federally funded airport. It just sounds like a bad idea to put something that can create sparks on a ve...
    last modified by john3
  • 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...
    last modified by shantu_k04@rediffmail.com
  • 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...
    last modified by gustavocanizzo
  • 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...
  • 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 the statement says this is acceptable. I am being told they ar...
    last modified by restafford
  • Installing a FireRay 5000 Beam Detector

    Hi, this is my first time installing a beam detector, I have one FireRay 5000 Simplex (5000-103) to play around with. https://simplex-fire.com/en/us/DocumentsandMedia/4098-0042.PDF  I have some questions h...
    last modified by leliex
  • Obstruction Beam

    Dear I would like to consult you about an office with visible sky, which has a beam of 0.42 meters high generating an area of 0.8 meters wide and a length of approximately 30 meters (photos are sent), okay, leave sp...
    last modified by c.caro.m33
  • RF-DASH Success Story 2020

    Kyle Koshalek
    last modified by Kyle Koshalek
  • 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...
    last modified by juenriq