FE Prep Assistance: So, i have been enjoying working through the daily PE problems, and this has me thinking about pursuing the PE examination. For background, I have an Engineering Technology degree from an ABET institution, so I know my potential for licensure will be limited in some states.
Being out of school for about 5 years now has me worried about sitting for the FE examination. Does anyone have suggestions for preparing for this exam? Is there a MeyerFire equivalent to prepare for the FE exam? Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
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Where an industrial application involves some uncertainty and deviation from standard practice and prescriptive code, but is without large uncertainties or extremely challenging applications, which of the following risk assessment approaches would be most appropriate? a. Layer of protection analysis (FPS-LOPA) b. Prescriptive standard application c. Quantitative Risk Assessment (QRA) d. Human reliability analysis (HRA) Solution | Posted 09/16/19
I'm new to this industry and I've been really trying to pick apart NFPA 13.
I have a question related to determining the area of sprinkler operation of a dry pipe system with high temperature sprinklers. The system is providing coverage of an outdoor chemical storage canopy. Design criteria: Dry System due to freeze potential Extra Hazard Group 1 (0.30 gpm/sf over 2500 sf) per NFPA 13 Fig. 11.2.3.1.1 High temperature rated sprinklers per NFPA 13, Section 8.4.7.2.4 My question is regarding adjustments to the area of sprinkler operation. Dry systems are to be increased 30 percent per 11.2.3.2.5, then it states in 11.2.3.2.6 that the area can be reduced by 25 percent when using High temperature sprinklers. Multiple adjustments can be compounded. Increase: 2500*30% = 750 sf Decrease: 2500*25% = 625 sf 2500 + 750 - 625 = 2625 sf A conservative approach would be to ignore the 25% reduction, but I'm curious what is actually required per code. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe Are you allowed to run a branch line through an elevator machine room? ASME 17.1 Section 2.8.2.3 clearly states that you can. Section 2.8.2.3.1 disallows only risers and returns. Am I missing something?
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe Historically, places of assembly have had major loss of life due to what unique building elements? a. combustible loads that aid in rapid fire growth b. inadequate exiting c. overcrowding d. all of the above Solution | Posted 07/10/19
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What is the maximum height of a sprig allowed before a horizontal brace is needed? Are there any specifics on where the measurement is taken (from the branchline, or just the cut length of the sprig)? Any help is appreciated.
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe We are working on a temple project that will be constructed using solid natural stones (Sandstone and Marble). All structural members of the temple will also be made of stones to be cut and taken directly from the mountains. Ferrous materials will not be permitted in the construction of the Temple.
The AHJ is requiring us to present theoretically the default fire ratings of these natural stones to be used with particular thicknesses. What resources exist to help calculate/determine the fire ratings of these solid natural stones? Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe A trench is built to handle overflow of heavy oil from a common garage workspace area to a containment tank. Determine the flame height (in meters) for an open linear fire (130 kW/m) within this trench. a. 0.44 m b. 0.87 m c. 2.2 m d. 25.7 m Solution | Posted 07/09/19
Our University is currently in design of an Applied Research Center which is configured as two lineal building bars separated by an atrium space. One bar will house our shipping and receiving area for chemicals, flammables, and hazardous waste storage. The other building bar will contain the majority of wet and dry labs for research.
The only pathway for transport of these chemicals, flammables and hazardous waste is designed to occur through the atrium space. Also, the only way to transport these items to second floor labs is by a passenger elevator located in the atrium. I can find no references in NFPA that prohibits utilizing the atrium for transporting these items. Does anyone have any information on whether this process is acceptable or not? Thank you! Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe Product data for multiple attic style sprinklers simply states that a hose allowance must be provided in accordance with NFPA 13 when using special application attic style sprinklers.
My logic, therefore, is that unused attic spaces show up as light hazard in A.5.2 (2016 Edition) and thus the hose allowance is 100 gpm for combustible attic spaces that don't house mechanical equipment or storage. Am I off base here? While it isn't my case I would think the presence of mechanical equipment or storage in the attic would bump the density at least to OH1 and 250 gpm for the hose allowance. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe I'm a learning sprinkler designer and I have a question that's more about design efficiency.
When you lay out sprinklers in large Ordinary Hazard areas (assuming there's ceilings or unobstructed construction), what is the first step you take to drop sprinklers in the space? Do you calculate the area of the room and then determine, at a minimum, how many sprinklers you need? Do you use drafting tools to automatically optimize the layout? Do you have circles around the sprinklers for approximate coverage and repeatedly shift until you like the layout? I typically start with the area of the room and divide by 130 to determine the minimum quantity of sprinklers, then dimension each wall to start with an "optimum" spacing. I feel like this takes longer than it should, so I'm curious if there's a better approach I could be using. Any help is appreciated. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe I recently came across your 13, 13R Summary of differences sheet and was wondering if you could explain or site a section that explains how NFPA 13R cannot be considered “fully-sprinklered” for code purposes? Thank you in advance for any help.
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