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A FORUM FOR PE EXAM PROBLEMS & DAILY DISCUSSION | SUBSCRIBE NOW

Remote Area for Dry System & Sloped Ceiling

8/31/2017

1 Comment

 
A project that contains a light hazard office space with a dry-pipe sprinkler system, and a 900 sqft area with sloped ceilings (about a 5/12 pitch). Per NFPA 13, the remote area should increase by 30% for the dry system (NFPA 13-2013 Section 11.2.3.2.5) and another 30% for the slope (NFPA 13-2013 Section 11.2.3.2.4). However, does the fact that only 900 sqft of the entire remote area is sloped impact the overall size of the remote area at all? Curious in other's opinions.

Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here.
1 Comment

Routing Mains Underneath vs. In-Between Joists

8/30/2017

3 Comments

 
When can a fire sprinkler main simply run parallel to and directly underneath structure (such as an open-web joist), and when must is be located in-between joists and hung with trapeze hangers? 

​Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here.
3 Comments

Variation in Fire Sprinkler Safety Factors

8/29/2017

6 Comments

 
NFPA 13 does not clearly identify a required safety factor for hydraulically designed fire sprinkler systems. What safety factors are commonly required by jurisdictions in your area?

Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here.
6 Comments

FDC Coordination with the AHJ

8/28/2017

2 Comments

 
What do you coordinate or ask the authority having jurisdiction about fire department connections to make sure your design meets their needs?

Note: This is a question submitted anonymously to us (you can submit any question here) as part of our Daily Discussion series. Discuss your take on this question here.
2 Comments

Water Hammer in Sprinkler Systems

8/25/2017

4 Comments

 
How do fire sprinkler systems address water hammer?

Note: This is a question submitted anonymously to us (you can submit any question here) as part of our new Daily Discussion series. Discuss your take on this question here.
4 Comments

When are hydraulic calculations required?

8/24/2017

7 Comments

 
For small building renovations, when do you (as a review engineer or AHJ) require hydraulic calculations to be provided?

​Note: This is a question submitted anonymously to us (
you can submit any question here) as part of our new Daily Discussion series. Discuss your take on this question here.
7 Comments

Life Safety Calculations: Round Up or Down?

8/22/2017

3 Comments

 
When conducting means of egress calculations, is there a standard way to round? For instance, if the square footage of a room suggests 48.1 people, is the occupant load always rounded (conservatively) to 49 people? Or does rounding follow standard convention, where 0.50 and up rounds up, and everything below rounds down?

Note: This is a question submitted anonymously to us (you can submit any question here) as part of our new Daily Discussion series. Discuss your take on this question here.
3 Comments

Easy Way to Determine Fire Alarm Circuit Class?

8/21/2017

3 Comments

 
Is there an easy way to recognize the fire alarm circuit class: A, B, C, D, E, N, or X? That is, is there a way to determine the class, just by looking at the diagram or plan of the circuit?

Note: This is a question submitted anonymously to us (you can submit any question here) as part of our new Daily Discussion series. Discuss this question here.
3 Comments

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The views, opinions, and information found on this site represent solely the author shown and do not represent the opinions of any other party, nor does the presented material assume responsibility for its use. Fire protection and life safety systems constitute a critical component for public health and safety and you should consult with a licensed professional for proper design and code adherence. Some (not all) outbound links on this website, such as Amazon links, are affiliate-based where we receive a commission for orders placed elsewhere.
  • Blog
  • Daily
  • Exam Prep
    • CFPS Tools
    • NICET Tools
    • PE Forum & Errata
    • PE Problems
    • PE Store
    • PE Tools
    • PE Weekly Exams
  • TOOLS
    • COMING SOON
    • BACKFLOW DATABASE (MEMBER)
    • CLOUD CEILING CALCULATOR
    • FIRE PUMP ANALYZER
    • FIRE PUMP DATABASE (MEMBER)
    • FLAMMABLE & COMBUSTIBLE LIQUIDS
    • FRICTION LOSS CALCULATOR
    • K-FACTOR SELECTOR
    • OBSTRUCTION CALCULATOR
    • SPRINKLER DATABASE (MEMBER)
    • THRUST BLOCK CALCULATOR
    • TOOLKIT (MEMBER)
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