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Does NFPA 101 permit the use of quarter landings (landings in L shaped stairs) in escape stairways?   I'm reviewing an architectural layout which needs to comply with NFPA 101 and the architect has done something unusual with the stairs.  Instead of the usual half landings which turn pedestrian traffic 180 degrees, he is using two quarter… (Show more)
in Building & Life Safety
We have a 35 year old fire alarm system in a dept store that needs replaced. The system is currently installed in 1/2" emt conduit. Is it permitted (code wise) to re use the existing 1/2" conduits with new wire, or does it require 3/4" emt?
in Building & Life Safety
Are there any proposed changes to NFPA 1582 that address the findings of recent cancer studies that indicate firefighters are at a higher risk for cancer.  I am specifically interested in changes to the sections dealing with colon cancer screening and breast cancer screening.  Locally, we have had firefighters diagnosed with various cancers who… (Show more)
in Building & Life Safety
Greetings, I was recently at a live theatre production outside my jurisdiction and noticed the EXIT signs went out with the house lights when the show started. Being a prevention officer, I always assess my exit route once I find my seat. Ontario Fire Code in Ontario Canada states EXIT signage shall be illuminated when the space is occupied. When… (Show more)
in Building & Life Safety
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 lift requires pressurization system attached to the exit stair enclosure and there is no space to locate the pressurization fans on roof.… (Show more)
in Building & Life Safety
I am trying to get to the bottom of an construction issue and was hoping to get some help.  Background This is occurring in a jurisdiction that has adopted NFPA 1 and 101. Significant construction project in which there is a change in occupancy of part of the area from a mercantile to an assembly area over 300 people.  The architect did not… (Show more)
in Building & Life Safety
NFPA 31 Section 8.6.4 states vent screen must be #4 (0.187") or coarser. This does not align with UL180:2019 which states the screen must be 2.0 mm (0.787") to 4.0 mm (0.157") - Section 8.4. These need to be aligned. Please comment, Thanks.
in Building & Life Safety
Single Source Cellular communication may be allowed by the AHJ.   I have been told that in order to meet the intent of NFPA -72 the cell tower must have 24 hour back up as well?  Has anyone head of this? Thanks
in Building & Life Safety
I need advice on the following two questions:   1. Recently we concluded an installation on the Novec1230 fire suppression system. However, once our installation has finished, the other contractor namely the Electrical guy has fixed a cable tray quite closer to the installed location of discharge nozzles. Cable tray has a distance of 50mm… (Show more)
in Building & Life Safety
I have been scouring NFPA 101 and NFPA 72 and have not been able to determine when an assembly occupancy must add voice to their fire alarm system. Any help in pointing me towards the right portion of the code I would appreciate it. What are the parameters or triggers that require an assembly occupancy to have add voice to an fire alarm system?… (Show more)
in Building & Life Safety
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