When in doubt, consult the structural engineer Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (tel:860-535-2080) (ofc) 860-554-7054 (tel:860-554-7054) (fax) 860-608-4559 (tel:860-608-4559) (cell)
> > On Feb 4, 2025 at 11:09 AM, <Christopher S. Wilson > (mailto:[email protected])> wrote: > > > > > > Brian, > > > > Hang from the vertical portion of the purlin only. It is unlikely you will > find a purlin that is designed to support sprinkler pipe from the bottom. The > best way to accomplish this it to install the hanger prior to the vapor > barrier. Use angle bracket type attachment put the bottom of the angle > bracket flush with the bottom of the purlin and use two screws so the hangers > do not get out of square. You will be able to locate the bracket easily after > the vapor barrier is installed because it is mounted flush with the bottom of > the purlin. > > > > > > > > > > > > > > > > Christopher S. Wilson > Project Design Manager, SET > > > > > > > > (208) 362-1888 (tel:(208)%20362-1888) > [email protected] (mailto:[email protected]) > > Treasure Valley Fire Protection > > 2731 Saturn Way > Boise, ID 83709 > > > > > > > > > > > > > > > > > www.tvfpinc.com (https://www.tvfpinc.com/) > > > > > > > > > > > > > > > > From: Ed Kramer <[email protected]> > Sent: Wednesday, January 29, 2025 4:42 PM > To: Discussion list on issues relating to automatic fire sprinklers > <[email protected]> > Subject: [Sprinklerforum] Re: Hang From Bottom of Purlin > > > > > > > > > > > > > > > > > You don't often get email from [email protected] > (mailto:[email protected]). Learn why this is important > (https://aka.ms/LearnAboutSenderIdentification) > > > > > > > > > > > > We’ve had a lot of projects recently where ‘simple saver’ plastic liner (or > something similar) is installed to the bottom of the purlins. I still > prefer attaching to the vertical part of the purlin, but that can get tricky, > messy, and a bit ugly. We’ve used a lot of the sammy-type products (there > are other brands on the market) to hang from the bottom horizontal flange of > the purlins – in particular the products that ‘mushroom out’ as they’re > tightened. > > > > > > > > Yea, look at the listings carefully – there are limitations on size of pipe > that can be hung, and minimum thickness of the purlin you’re attaching to. > Also check the PEMB drawings for any limitations they have for hanging. > The maximum point loads can be pretty small. We’re dealing with a couple > projects now where we’re installing multiple anchors for each hanger (kinda > like a trapeze bar) to keep the PEMB people happy. You can get really > creative if you’re willing to get the PE stamp on it. > > > > > > > > Ed Kramer > > > > Bamford Fire > > > > > > > > > > > > > > > > From: Brian Harris <[email protected] > (mailto:[email protected])> > Sent: Wednesday, January 29, 2025 2:55 PM > To: [email protected] > (mailto:[email protected]) > Subject: [Sprinklerforum] Hang From Bottom of Purlin > > > > > > > > > > I’ve was always taught to hang from the vertical leg of a purlin. We have a > case where there will be a barrier installed, and the bottom flange is the > “only” place to hang. If I’m reading the data sheet for Sammy Sidewinders it > looks like there are a couple options, 2” & 3” pipe. Thoughts? > > > > > > > > Thank you, > > > > > > > > Brian Harris, CET > > > > BVS Systems Inc. > > > > bvssystemsinc.com (http://bvssystemsinc.com/) > > > > Phone: 704.896.9989 > > > > Fax: 704.896.1935 > > > > > > > > > > > > Disclaimer > > > > This email may contain confidential and privileged material for the sole use > of the intended recipient(s). Any review, use, distribution or disclosure by > others is strictly prohibited. If you are not the intended recipient (or > authorized to receive for the recipient), please contact the sender by reply > email and delete all copies of this message. PLEASE PRINT RESPONSIBLY. > > _________________________________________________________ SprinklerForum > mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to [email protected] >
_________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]
