ALL THINGS FIRE PROTECTION | SUBSCRIBE NOW
|
I'm designing a system with sprinklers at the ceiling of a large open space. There is a vestibule within this space that has a lower ceiling that requires 3 sprinklers. The client does not want pipe drops or hangers above the vestibule to be visible from the rest of the open space.
The proposed solution is to run a branchline down the wall and horizontal tight to the ceiling. Is there a good way to support this that meets the requirements of NFPA 13 chapter 9? The vestibule has CMU walls and metal stud ceiling. Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
1 Comment
Anon.
10/18/2019 10:47:19 am
IF I am picturing this correctly, I just had one similar, a fancy lobby with a low lobby with lid. We ran the pipe concealed within the interior wall, then popped back out, just over the top of the lid where the horizontal pipe would NOT be visible. You are supplying more than one sprinkler, so you may have to incorporate flexible couplings and aux drain. To secure to framing, depending on the situation, I have rested on top with short clips, or strut with u-clamps, or a FEW of the CPVC stand-off hangers are listed for steel for smaller sizes. Would the piping be visible if you ran that low? Or if it is possible to suspend below the steel framing, perhaps side beam bracket or Sammy/Elco sidewinder probably with backing nut. If you must be visible tight to the ceiling below, then I dunno… Standard rings or 138R split rings and Sammy/Elco or ATR nut and washer? assume you can’t cover the space with sidewalls. Does the steel framing have openings through the webs? Leave a Reply. |
Free SignupSubscribe and learn something new each day:
CommunityThank You to Our Top
February '21 Contributors!
Your PostThe ToolkitSprinkler Designer or Engineer?
Get all of our tools, including the Sprinkler Database, Friction Loss Calculator, Fire Pump Analyzer and more: 
Filters
All
Archives
April 2021
Daily
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:
Exam Prep
2020 PE Prep Guide
(Available Now!) 
PE Prep Series
(Available Now!) 2020 PE Prep Series
Current Leaderboard (Click to enlarge) 
PE Problems
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. |
RSS Feed
