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christophers
Is an upright sprinkler head allowed to be installed in a way where the arm over comes down off the main? For example, there is a 4” main and then the 1” arm over has a weld o let that drops down to a 2” nipple off the 4” main, then hits a 90, then there is a 4” nipple horizontally that then hits a 90 and goes up about a foot to the upright… (Show more)
michael.mccormick1325@gmail.com
A 70,000 sq ft rack storage warehouse is being built with sprinklers at the ceiling and in-rack sprinklers in the racks.  How many sprinkler systems need to be installed in the warehouse?
in Fire Protection Systems
scootley
Hi, I have questions about the NFPA 101 required number of means of egress for a condo unit.  I've read through Ch 7.4 and 31.2.4 and seemingly related sections but some of the terminology confuses me (even after reading definitions) due to my lack of experience with this topic (I am a homeowner).   Question: Is an additional 3rd floor emergency… (Show more)
in Building & Life Safety
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michael.mccormick1325@gmail.com
The residential fire statistic that seems to be consistent is: A. 20% of all structure fires produce a death B. 80% of deaths occur in residential fire C. 50% of deaths occur in apartment fires D. 40% of deaths occur in residential fires   (I was thinking answer A made the most sense, but can't find any stats on this.)
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michael.mccormick1325@gmail.com
Which of the following sprinklers is designed to suppress a fire in a storage warehouse rather than just control it? A. K-8 spray sprinkler B. K-11.2 spray sprinkler C. K-5.6 spray sprinkler D. ESFR sprinkler E. Large drop sprinkler (I thought it was answer E but would like to confirm.)
in Fire Protection Systems
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mstromme
Our question deals with NFPA 704-2017, Standard System for the Identification of the Hazards of Materials for Emergency Response. We plotted the NFPA 704-2017 hazard rating reading (legibility) distances and hazard rating inches from Figure 9.1(c) on a line chart. We put hazard rating inches along the horizontal axis (or x axis), and we put… (Show more)
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charles.goedecke
Was does code NFPA1.10.1.7 reference?
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jeffrey.demaine
Per NFPA 130 (5.2.2.1 and 5.2.2.2), rail stations are required to be a Type of construction as defined by NFPA 220, in accordance with NFPA 101, Chapter 12 (Enclosed = Type I or II / Unenclosed = Any type of construction).  Per NFPA 101 (since the 2012 edition), any non-sprinklered assembly is limited to an occupant load of 300.  Table 12.1.6… (Show more)
in Building & Life Safety
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phillipsc2
Due to recent events on-site, we are either removing or re-thinking the fire protection scheme in our electrical switch houses.   In our industrial facility, we have several electrical switch houses and power distribution centers that have no fire suppression systems. Plant operators and staff must routinely enter these buildings and take…
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david.hague
Click to view contentWe know that standard spray sprinklers are not permitted to be located closer than 6 feet (1.8m) apart due to the “cold soldering” effect (one sprinkler spraying the other, thus preventing its operation). However, there may be situations where we are forced to locate sprinklers in close proximity to each other. What can we do in such situations to… (Show more)
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amministrazione
Click to view contentGood morning chapter 25.8.2.4 (d) (e) indicates the position of sprinklers for Double-row racks protection, what happens if the two racks do not have the same step ? In my case one of the two racks has a different beam length (always to support two pallets) and in this case the central sprinklers in the longitudinal flue space are not aligned with… (Show more)
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