Recent content by fpst

Not one of ours, just found it on the internet thankfully

The standard notes and implies in two places, once in 7.1.5.1 and once in the annex that multiple vents on one system are not practical or required, but would certainly help... It would really be a nightmare if you had to do that. on the NFPA webpage they say a "task group" came up with this...

http://foodscience.wikispaces.com/Nuts the website above says walnuts contain 60% oil, and macadamia nuts contain more than 72% oil

The 2016 edition of NFPA 13 now requires an air vent on every wet system: 7.1.5 Air Venting. A single air vent with a connection conforming to 8.16.6 shall be provided on each wet pipe system utilizing metallic pipe. (See A.8.16.6.) 7.1.5.1 Venting from multiple points on each system shall not...

Also note that (3) requires the flow and residual pressure at the BOR in addition to the hose stream+system demand in (5), which means the HYDRAULIC PLACARD MANUFACTURER'S MAKE THE SIGNS INCORRECTLY not that we fill them out wrong, there aren't enough boxes on many of them.. or correct boxes..

Below is an extract from NFPA 13, 2013 under "Hydraulic Design Information Sign"

fixed links: Link Link about the definition of exposed, in the context in which it is used, seems like fire treated wood could be considered shielded or protected (from fire), steel could be considered shielded or protected (from fire), but non treated wood could be considered exposed (not...

what version of NFPA 13 is that from? I looked for it in the definitions of the 2013 edition and I couldn't find it completely agree though that exposed shouldn't have anything to do with combustibility in-of-itself still perplexing as to why it seems to be associated with combustibility from...

FWIW Matt I read it the same way, sprinklerdesigner2 standing over my shoulder told me it had to do with the combustibility and it seems idiotic not to just call them "combustible members" or "noncombustible members" which isolates them from ceilings, but who knows.

In the space above the "ceiling 7" below the bottom of the glue-lams" and the top of the glue-lams, aren't the glue-lams visible and therefore exposed? If so, what's an example of a non-exposed (invisible) member?

What does "exposed" mean in the phrase "exposed members"? How would you convince the AHJ that's what it means? In NFPA 13 2013, Table 8.6.2.2.1(a) has many interesting things going on... A short snippet from the handbook giving us additional info: If you look at the table where it says...

OK, this business about "how do you determine which standard to use" was confusing to me as well so I researched it. It turns out, the IBC, IFC, and what your building official says is all just part of the story. You need to think about this in terms of a hierarchy. Just because something has a...

I have been looking everywhere for a way to find out how wide the top of a joist is based on structural plans (looking at the steel designation, and then looking it up). Nothing seems to be standardized across manufacturers so I'm looking for some rules of thumb. What I think is happening by...

Greatest usage time is halftime during the Superbowl :-)

The NFSA EOD gave their informal opinion on this, "What you are describing here is a private water service since it is supplied from a domestic booster pump and feeds both the domestic and fire lines for the complex. Private water services are outside of the scope of NFPA 13R. The applicable...