Last week I discussed a common question in residential construction concerning whether NFPA 13R could be used, or whether NFPA 13 had to be used.
If you haven't read it, you might check it out. Here's a link.
The four global limitations to using NFPA 13R include:
The last qualifier is often the most difficult to assess, and is an important question that the architect or code consultant for the building will need to answer.
To help determine whether a building can use NFPA 13R, here's a PDF cheatsheet that shows differences in code allowances using NFPA 13, 13R, 13D, and no protection at all.
All of the references are to the International Building Code 2018 Edition, but this should help offer some quick guidance on different code allowances to check for your project. As always, it's worth using this as a starting point and then exploring the code nuances to be sure your project is up to snuff.
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Travis Mack at AFSA
If you're going to AFSA's Conference in San Diego next week, be sure to check out Travis Mack's presentation on this topic. He's an industry leader & expert in everything suppression.
Correction on the Porte-Cochere Logic
A couple weeks ago I discussed the differences between different forms of heat transfer in the context of flame spread. I made a point that conductive heat transfer is the least critical of the three forms of heat transfer, but suggested that fires "jump" across roadways due only to radiation heat transfer. This is due primarily to convective heat transfer - strong winds can promote fire growth far faster than radiative heat transfer can - and it often does for large wildfires.
I mentioned last week - but I'm down to about a dozen copies of the 2019 PE Prep Guide Edition left for the year. If you know someone who is looking for a copy you might suggest they get it sooner rather than later.
Thanks & have a great week!
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Joe Meyer, PE, is a Fire Protection Engineer out of St. Louis, Missouri who writes & develops resources for Fire Protection Professionals. See bio here: About