Scenario: 38-ft. roof, 32-ft. open frame double and multi-row rack storage of Class II & III Commodities. 45 deg warehouse.
Wet sprinkler system at ceiling
Double Interlock System for Racks Sprinklers (2 levels) with Linear Heat Detection located at ceiling only - along ceiling sprinkler...
Hi,
I have what I thought was an easy one, but the more I look at FM 2-0, the more confused that I get!
I have an 18-inch diameter LED light in a warehouse. It’s located 12-inches below the sprinkler head deflector. It’s a non EC, upright head.
Question..
How far (horizontally) from a...
Hi,
Are hydraulic calculations required for every sprinkler system in a large Distribution Center (or similar) where there are many systems, each having the same designs and piping layouts. I seem to see more and more submittals where only the most remote system (furthest from the water...
Hi,
FM Global 2-0 Section 2.4.7.1 says that a 30% solution propylene glycol antifreeze system is acceptable if the ambient temperature of the protected area is maintained at or above 25°F (-4°C), as well as at or below 200°F (95°C) at all times.
Are there limitations to this (aside from the...
Looking for guidance on how to deal with powered exhaust fans located in warehouse roofs, commonly protected by supression mode heads. Can't find anything in NFPA (other than testing is based on them not being present). FM Global used to allow sprinkler heads to be installed in the center of...
Anyone have experience with Li-Ion battery storage and how best to protect it? I am particluarly interested in larger batteries (similar to car/truck batteries), but any info would be helpful. Li-Ion batteries, as I understand it, are more stable than lithium batteries as they only contain Li...
Does NFPA 13 indicate at what point the AHJ needs to be involved and/or a licensed contractor should be contacted when replacing sprinkler heads - like for like.
Can an owner replace 4, 10, 50 heads..... without involving AHJ or contractor.
I imagine states have their own requirements, but I...
I have a warehouse that stores empty polypropylene battery cases in racks. Per NFPA 13 - this is a Group A plastic.
The MSDS for this specific plastic indicates that is a UL 94V-0 flame retardant plastic. How, if any, does this affect the commodity class. I've looked on the UL web site and...
I've got a building with 19-inch deep concrete tee roof construction. Per section 8.4.6.3 of NFPA 13, ESFR sprinklers are not allowed with obstructed construction exceeding 12 inches in depth (unless installed in every channel). In my situation, that would result in less than the minimum...
Can anyone tell me if there is guidance for using ESFR sprinklers in occupancy where high dust concentrations exist. I haven't been able to find anything in NFPA. FM Global discourages the use of quick responce automatic sprinklers (QRAS)in their water supply data sheet but nothing specific to...
I'm looking for information, articles, advice, et. on providing automatic sprinkler protection of battery formation (charging) areas. The fire hazard that I see is primarily the plastic battery cases but does that outweigh the electrical risk?
I have seen many sprinklered UPS rooms in telecom...
NFPA 13-2007 Tale 8.12.5.1.1 provides guidance for obstructions below ESFR's but I'm not clear where the following would fall in this? Any guidance would be appreciated.
I've got several 11-inch wide x 8-ft. flourescent light fixtures that are located 32-inches below the pendent ESFR...
NFPA 13 Table A 5.6.3 lists various types of photographic film as Class II through IV depending on packaging. I am trying to determine the commodity class for sheets of developed x-ray film in heavy paper sleeves. I'm having a tough time finding an MSDS for this commodity. I would appreciate...
