For an existing conference room where the Architect required adding an outlet, the plan check person has required outlets as per this article, which requires quantity as in a residence. In addition, it requires floor receptacles for each 215 square feet of room. For one room, it is smaller and has doors each wall, as code does not restrict,… Show more
I would like to check with regards to the underground, above ground and sprinkler piping to be used. Is there a requirements to use Galvanized piping for fire ring main hydrant system as per NFPA guide lines? Are cement lined pipes recommended as water authorities generally require ductile iron for underground pipes? As for Galvanized Iron (GI)… Show more
1. Steel pipes cannot be used underground. The only exception are ASTM A312 stainless steel pipes. 2. Pretty much all commercially available ductile iron pipes are cement lined. 3. Even with wrapping steel pipes are not permitted underground. 4. No. 5. NFPA 13 section 22.214.171.124 has requirements for protection against freezing.
Hi guys, Consider a shed having only roof is using for dining. All sides are open to enter and exit. Is it mandatory to have both automatic detector and Manual Call point or only manual call point is enough???
Hello Dear Community, I have a question with regards to the following interpretation of a Code in NFPA 13 - 2013 Edition: 126.96.36.199.2 Retroactive Installation. When backflow prevention devices are to be retroactively installed on existing systems, a thorough hydraulic analysis, including revised hydraulic calculations, new fire flow data, and… Show more
Fire Collars At what size pipe would a fire collar be required? I cannot find a code reference in LSC chapter 8 or IFC. I did find some commentary from the ICC but it only stated that anything greater than 3 inches, check the system.
The requirements like in Section 188.8.131.52 Firestop Systems and Devices Required of the 2018 NFPA 101 are performance specification as most of the code is not prescriptive. The code does not preclude the use of 'fire collars' for specific sizes of pipe. In accordance with Section 184.108.40.206.1, penetration for pipes of any size that pass through a…
I have a project in an Artic environment where the Owner has a large pond they would like to use for their fire water source. Question regarding fire water reliability evaluation per NFPA 11, A220.127.116.11, recycled water, process water or grey water can be utilized in foam production providing the water quality is suitable. In addition, NFPA 24,… Show more
I have a storage arrangement that has been difficult to classify. Many of my colleagues have drawn different conclusions for a variety of reasons. The storage arrangement in question is raw potatoes in plastic totes (an empty tote weighs 200 lbs and when full of potatoes weighs 2,000 lbs - 10% plastic by weight and less than 5% by volume when… Show more
You may want to refer to FM Data Sheet - 8-1 Commodity Classification, Specifically paragraphs 2.3.5, 2.3.7, 2.3.8, 3.8.3 & Figure 3. Comments from that DS - The external packaging of the a material will determine the early stages of fire growth. If the external packaging is higher or lower hazard than the material inside the package, the…
Does NEC 680.7 apply to factory and field installed lugs, the way I read it is the first sentence would apply to factory lugs and the second sentence would apply to field installed lugs.
You would have to ask code panel 17 and they may not have an immediate answer for you. But your interpretation wouldn't necessarily be incorrect - equipment that comes with lugs from the factory would be "listed for use." It is just if you install something in the field, then it has to be listed for direct-burial use. Here is how they…
Hi, I work for an equipment manufacturer. For a machine we are building, I have a VFD for an Exhaust Blower that requires 480 VAC 3-phase 6 amps. The VFD is designed so that it can be mounted on a wall without having to be inside an electrical enclosure. Typically, the exhaust blower is located inside a building. In these cases, I provide a… Show more
Hello, The backup generator for one of the data centers in my area has "thrown a rod" as reported by the owner. They do not have a timeline just yet for getting it replaced. This generator is the back up for the fire pump. What advice does the cadre have for how to proceed? Thanks in advance. Jason
Although these types of elaborate systems may not be specifically mandated, when provided, they must meet all applicable provisions of building safety codes such as NFPA 101. No one has mentioned the life safety features of means of egress that may be dependent on the alternate source of power. Something must be done with more immediateness than…
Hi - I am looking to install a whole home standby generator (Cummins RS22) and I've read the forums here about Section 4.1.4 of NFPA 37, but there are a couple of items that are not clear to me. The text states a 5 foot rule. Is the 5 foot rule measured directly from the opening or combustible wall? For example - if the opening is 10 feet off… Show more
Generac, Kolher, and Briggs have all performed enclosure testing with SwRI. SwRI has an online certification directory, and by selecting "Fire-rated Engine Generator Assemblies" you can view the listing information. The testing that SwRI performs is for reducing the 5 foot separation from the generator to a combustible wall of a structure.
Pa started following the 2014 NEC so my questions is 1) 210.12(A) - does a dishwasher for a dwelling require AFCI protection if on a dedicated circuit (I know it needs GFCI protection) 2) same question, how about a waste disposal at the sink? 3) Looking at 550.25(B) - if a furnace is replaced (in a mobile home) and new wire is installed, does… Show more
Any outlet under a sink - check with your AHJ if it has to be GFCI as this will vary from jurisdiction to jursdiction. I require it under 2017 210.8(A)(7) and on commercial 2017 210.8(B)(5). Dishwasher has to be GFCI under 2017 210.8(D), even if hard-wired. 210.8(D) Kitchen Dishwasher Branch Circuit. Yes, AFCI applies also because it is…
Load more items
NFPA 13, 2013 version has additional provisions to support sprinkler piping from shared supports under 9.1. NFPA 13, 2010 version does NOT have these additional sections and is more general. Was it / is the intent of NFPA 13, 2010 version to prohibit the use of shared support structures? or Was this additional language in NFPA 13, 2013 version… Show more
I have seen too many local inspectors' opinions for an equivalency not support a legal case by the administrative hearings or courts.The administrative policies and regulations of the AHJ, not the individual inspector's opinion, must have legally adopted procedures for an equivalency. Our office uses a variance request rules and regulations where…