• 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...
  • 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

    Does NFPA 20 have a Checklist to verify if all the requirements of this normative are acomplish? Where can I find this checklist?
    last modified by jorgearanayi
  • NFPA 850, 2020 edition

    Hello, my name is Martin. With reference to the latest edition of NFPA 850 Chapter 6 & 9.  it seems that one of the various fire suppression systems mention under item and 9.7.9 is Foam-wate...
    last modified by mch
  • Special Stages (360 stages)

    Context: Fire protection to a 360° Stage According to NFPA 101, the stage and the auditorium seating area shall be completely separated by a proscenium fire curtain/wall.   This should be applied the same ...
    last modified by ftorres
  • NFPA 13

    What is the correct way to handle the following situation:  Fully sprinklered building with multiple occupancies all off of the same sprinkler riser.  Should each occupancy have a flow switch with no flow sw...
    last modified by troy.long@salina.org
  • NFPA 13D PEX

    Does  2019 13D 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...
    last modified by mountainfireprotection1
  • Can Window Sprinklers be used for Proscenium Water-Curtains?

    Can Window Sprinklers be used for Water Curtains for Proscenium Openings?   According to NFPA 101-2018, the proscenium opening shall be protected by a listed fire curtain or an approved water curtain ...
    last modified by ftorres
  • 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
  • Sprinklers Under fixed Obstructions Over 4'

    With respect to NFPA 13 clause When installing sprinklers under fixed obstructions over 4' in width the sprinkler shall be located not more than 3" from the outside edge of the obstruction. Does this mean...
    last modified by rperkin9
  • 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
  • This is the framing around a gas fire place. The area to the left of the fireplace is for a big screen tv. The tv receptacle is installed above 5'6".What would all be considered wall space by 210.52(2)(1) ?

    last modified by wattsj
  • 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
  • Fire control panel in low temperature

    How about install the suppression control panel in outdoor in low temperature (-20degC to 40 detC)? Usually UL certification onthe suppression control panel is based on test above 0 degC. But does the panel also OK i...
    last modified by 603656408
  • 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...
    last modified by ccoache
  • Means of Egress Requirements For Sewage Pump located in -44m Deep

    There is a sewage pump located in -44m deep from the LED. The pump house structure is in 35m diameter and contains 4 electric pumps (3 duty + 1 standby) and sump dewatering pump located at -44m level from LED. Each se...
    last modified by hamad.koroni
  • Can I daisy chain power strips?

    Hello, I am new to this forum/subject and would appreciate for any assistance.  I plan to install power strips in a piece of furniture.  Can I daisy chain one power strip to another strip?  I understan...
    last modified by ytfu2011
  • Enclosure Pressurization

    While I am conducting a site visit to one of pressurized stair, I found out there is a concrete slab separated the mechanical equipment from the pressurized stair. The stair enclosure was supposed to be built in compl...
    last modified by hamad.koroni
  • 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...
    last modified by fahrquad
  • Pressure Sense Lines

    Dear Sirs, please permit to formulate two questions regarding to Pressure Sensor Line for jockey Pump and Main Fire Pump. Is it mandatory in the standard to install the two check valve DN 15 mm (1/2")  with the ...
    last modified by rodriguez@colasrail.com