A dormitory has 1/2-hour fire barriers separating each residential unit. On each side of the 1/2-hour wall, penetrating the 5/8" gypsum, are shower valves that serve showers within bathrooms on each side.
The shower valves have the valve assembly itself and an opening that's covered with a metal escutcheon. These would qualify as a membrane penetration under the International Building Code.
For back-to-back vales in the wall, how is this commonly addressed to still maintain the 1/2-hour fire resistance rating?
Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
NFPA 13 requires closely spaced sprinklers with a draft curtain around unenclosed moving stairways, staircases, or similar unenclosed floor openings which are not large (20 feet or more across and 1000 sqft or greater), as an alternative to the enclosure of the vertical opening (NFPA 13 126.96.36.199 in 2016 and 188.8.131.52 in 2019).
This seems to jive with NFPA 101, but where does it come into play with the International Building Code?
As a sprinkler designer I want to be cognizant of situations where closely spaced sprinklers and draft curtains are necessary, but would they only surface as an AHJ-approved code alternative by IBC 104.11 (Alternative materials, design and methods)?
Posted anonymously for discussion. Discuss This | Submit a Question | Subscribe
Subscribe and learn something new each day:
Thank You to Our Top May 2019 Contributors!
Sprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more:
Daily discussion questions are open-ended questions posed by members for the benefit of sharing expertise and learning from other perspectives. Join as a member here.
2019 PE Prep Guide
PE Prep Series
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.