I believe this would be considered bean and girder construction instead of concrete tee but the same rules for obstructed construction would apply
On Fri, Feb 9, 2024 at 2:43 PM <[email protected]> wrote: > I believe they are different. > > > > In fact, there is a definition that a “tee”, has a bottom width less than > the top. > > > > Not at a book, but I am sure someone will chime in shortly. > > > > R/ > > Matt > > > > *Please rate our customer service > <https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication>* > > <https://www.google.com/maps/search/3508+Hwy.+557+%0D%0A+West+Monroe,+LA.+71292?entry=gmail&source=g> > > > > *Matthew J. Willis, CWBSP, CET* > > *Engineering Manager – Southwest Region* > > *FERGUSON FIRE DESIGN, LLC* > > *A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC* > > 3508 Hwy. 557 > <https://www.google.com/maps/search/3508+Hwy.+557+%0D%0A+West+Monroe,+LA.+71292?entry=gmail&source=g> > > West Monroe, LA. 71292 > <https://www.google.com/maps/search/3508+Hwy.+557+%0D%0A+West+Monroe,+LA.+71292?entry=gmail&source=g> > > C: 307-236-8249 > > *[email protected] <[email protected]>* > > *www.FergusonFire.com <http://www.fergusonfire.com/>* > > > > > > *From:* Jackie Ward <[email protected]> > *Sent:* Friday, February 9, 2024 2:38 PM > *To:* [email protected] > *Subject:* [Sprinklerforum] Concrete Beams -- NFPA 13, 2016 > > > > *Caution: This email originated from outside of the organization. DO NOT > click links or open attachments unless you recognize and trust the sender. * > ------------------------------ > > I have 18” wide concrete beams extending 24” from the bottom of the deck > on 7’-0” centers. > > > > NFPA-13 (2016) 8.6.4.1.2 Obstructed Construction (5)* Installed with > deflectors of sprinklers under concrete tee construction with stems spaced > less than 71⁄2 ft (2.3 m) on centers, regardless of the depth of the tee, > located at or above a horizontal plane 1 in. (25 mm) below the bottom of > the stems of the tees and complying with Table 8.6.5.1.2. > > > > A.8.6.4.1.2(5) For concrete joists spaced less than 3 ft (900 mm) on > center, the rules for obstructed construction shown in 8.6.4.1.2 apply. For > concrete tee construction with stems spaced less than 7 ft 6 in. (2.3 m) on > center, the sprinkler deflector can be located at or above a horizontal > plane 1 in. (25 mm) below the bottom of the stems of the tees. This > includes sprinklers located between the stems. *[See Figure > A.8.6.4.1.2(5).]* > > > > I am getting caught up in semantics with the wording. Would a concrete > beam be interpreted the same as a concrete tee? > > > > Am I allowed to install the deflectors above one-inch below the bottom of > the beam in accordance with Table 8.6.5.1.2 as I would be if they were > concrete tees, or will pocket protection be required? > > > > > > > > > > > > > > > > Sincerely; > > > > Jackie "JW" Ward; SET > > 1-405-240-7076 > > [email protected] > > NICET IV Cert. No. 104187 > > Victaulic Vortex Integrator > > > > Firetrol Protection Systems > > 108 NW 132nd Street; Oklahoma City, OK 73114 > <https://www.google.com/maps/search/108+NW+132nd+Street;+Oklahoma+City,+OK+73114?entry=gmail&source=g> > > 405-752-2330 Ext. 10230 Fax:405-752-2297 > > License No: AR-FSS-162, LA-F415, OK-863 & 302, TX - ECR-1751432, > ACR-1751168, SCR-G-0292 > > > > [image: Firetrol Oklahoma City BACK] > > > > > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected] -- Thank You Brett Peters PFPS Ltd (780) 777 0568 Sent From My iPhone
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