We have very deep beam glue-laminated timber construction that just has the laminated wood exposed to below.
The beams are very deep; 2'-9" deep. These form bays that are 13'-9" x 13'-9", many with smooth ceilings. The area below is light hazard.
Can sidewall sprinklers be used up in these coffered areas?
Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
3/21/2023 07:04:02 am
Not really conceivably.
3/21/2023 07:09:23 am
...21 minus 14 is 7, not 5. Let's just pretend that's a typo.
3/21/2023 07:50:31 am
Can you, sure. Need to confirm the lower perimeter soffits bounding the bays are less that 16",so providing a back to back installation is feasible within every pocket (13-22' 10.3.4.1.4.1 -The maximum width of the lintel or soffit shall not exceed 16 in. (400 mm).)
3/21/2023 09:03:35 am
Wow that's a mess. I think Dan's on the right track in finding an allowance to do it. I just don't think its the best means to protect this area. I think I'd be looking at other options.
3/21/2023 09:23:36 am
Yes, you can treat each bay as a room and protect it with a sidewall.
3/23/2023 05:26:29 pm
That is what I was thinking considering pockets like room each.
3/21/2023 11:00:38 am
I assume beam penetrations (for the sprinkler lines of for back-to-back sidewalls) are out of the question, and I assume the architect is going to want the sprinkler lines running off to the side of the cells. I am also encountering similar configurations in historic buildings (e.g. McMenamins) with plaster coffered cells like this, and see effective use of sidewalls, horizontal or vertical, paying particular attention not to exceed the maximum deflector to back wall distance. I expect to see a lot of new challenges with new forms of engineered lumber, CLT, DLT, mass timber, etc.
3/21/2023 11:03:06 am
...But are there obstructions including those created by surface-mounted lights?
3/21/2023 11:15:47 am
Based on the dimension you provided, each pocket requires sprinkler protection.
Leave a Reply.
Subscribe and learn something new each day:
Top May 2023 Contributors
Get 100 Days of Free Sample Questions right to you!
PE PREP SERIES