NFPA 13 Section 8.15.4 (2013 Edition) requires certain types of unenclosed floor openings to be protected with closely spaced sprinklers where sprinklers serve as an alternative to the enclosure of the vertical opening.
What method do you use to determine if the opening requires enclosure, and thus closely-spaced sprinklers?
As a sprinkler designer, I may overlook something in the Building Code that allows the unprotected opening, or vice versa.
A pre-bid RFI to the architect seems to be the best course, but it would be nice to have something to hang the hat on before the bid is submitted.
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top
February '21 Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
Daily discussions are open-ended fire protection, fire alarm, and life safety questions submitted anonymously for the benefit of sharing expertise and learning from other perspectives. Anyone can submit a question here:
2020 PE Prep Guide
PE Prep Series
2020 PE Prep Series
(Click to enlarge)
Visit July-October for daily Fire Protection PE Exam sample questions.
Solutions are posted the day after posting.
Comment with your solutions, questions or clarifications.
Please note that questions posted are unofficial and in accordance with NCEES rules are intended to be similar to actual exam questions, not actual exam questions themselves.