A FORUM FOR FIRE PROTECTION QUESTIONS & PE EXAM PROBLEMS | SUBSCRIBE NOW
|
For an entry lobby area that is open to the floor above with a elevator on the second floor, and there is a pitched skylight for the roof. Where do you locate the smoke detector for elevator recall? I could not find any specific requirements for smoke detector location requirements in NFPA 72.
What are the design/location requirements for a elevator recall smoke detector in this scenario? Note: This is a Daily Discussion question submitted anonymously to us. Submit a Question or Discuss This Here.
6 Comments
Chris
10/16/2017 08:13:16 am
This is an excellent question, and I come across it often. Please refer to NFPA 72, 2010 or 2013 edition, 17.7.3.1.3 and 17.7.3.1.4. This will lead you to the Annex which suggests, for ceilings greater than 15', you may mount the detector within 60" of the top of each elevator door opening to protect the opening. This is allowed because it is not being used for general detection, but rather, for the protection of the opening.
Chris
10/16/2017 08:40:30 am
I probably should have mentioned that this would be WALL mounted, although you probably gathered that already.
Connor
10/16/2017 05:00:11 pm
Yep I gathered it was to be wall mounted.
Jeremy
9/26/2018 09:09:42 am
Chris, 10/16/2017 10:21:43 am
How many floors does the elevator serve? More than just the main and "mezzanine" you indicated?
Connor
10/16/2017 05:02:20 pm
The elevator serves the basement, 1st and 2nd floors. The first and second floor entry area is the areas that are open to one another, and where the skylight is located. Leave a Reply. |
Free SignupSubscribe for posts on PE Problems and Daily Discussions, straight to your inbox, for free:
CommunityThank You to Our Top March 2019 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 2019
Daily
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.
Exam Prep
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
