Why edition are yo looking at. Chapter 2 is referenced publications in all recent editions and chapter 21.1 (I was speculating on a typo) ends the .1 section at 21.1.9 in the 2016 edition. I'm at home and all my earlier editions are at the office.
This is what the 2016 edition has to say about EC sprinklers in chapter 21: *Chapter 21 Alternative Sprinkler System Designs for* *Chapters 12 Through 20* *21.5.3 Extended Coverage Spacing Sprinklers.* *21.5.3.1*Sprinklers having extended coverage areas requir- ing up to 10 sprinklers to be included in the hydraulic calcu- lation shall be installed in accordance with the obstruction criteria described in 8.8.5.1, 8.12.5.2, and 8.12.5.3, unless large-scale fire testing is conducted with a representative ob- struction below the sprinkler that demonstrates equivalent performance. *21.5.3.2*CMDA and CMSA sprinklers having extended cover- age areas requiring more than 10 sprinklers in the design area shall be installed in accordance with the obstructions to sprin- kler discharge criteria described in 8.11.5 and 8.8.5.1. *21.5.3.2.1*ESFR sprinklers having extended coverage areas requiring more than 10 sprinklers in the design area shall be installed in accordance with the obstructions to sprinkler dis- charge criteria described in 8.12.5.2 and 8.12.5.3. *21.5.3.2.2*Other obstruction criteria shall be acceptable if large-scale fire testing is conducted with a representative ob- struction below the sprinkler that demonstrates equivalent performance. *21.5.3.2.3*When utilizing upright CMSA, CMDA, or ESFR sprinklers, any continuous obstruction 4 in. (100 mm) or less shall be permitted to be ignored. Ron Greenman [email protected] 253.576.9700 The Universe is monstrously indifferent to the presence of man. -Werner Herzog, screenwriter, film director, author, actor and opera director (1942-) On Mon, Dec 3, 2018 at 5:28 AM Mike B Morey <[email protected]> wrote: > 2.1.1.10.1 specifically states extended coverage heads are only allowed in > wet pipe systems. > > > ------------------------------ > > *Mike Morey* > *CFPS 3229 • NICET S.E.T. 123677* > *Project Manager* • Fire Protection Group > * Shambaugh & Son, LP **an EMCOR Company* > 7614 Opportunity Drive • Fort Wayne, IN • 46825 > *direct *260.487.7824* / cell *260.417.0625* / fax *260.487.7991 > * email *[email protected] > > > > > > > > From: JD Gamble <[email protected]> > To: "[email protected]" < > [email protected]> > Date: 11/30/2018 04:31 PM > Subject: Interior Loading Docks > Sent by: "Sprinklerforum" < > [email protected]> > ------------------------------ > > > > BE ADVISED - This email originated outside EMCOR. > > I have a project with an interior truck loading bay in a light > manufacturing facility. Looking at using FM3-26 as the basis of design, > which allocates the design density as .3/3500 for a dry system at HC-3. > > Am I reading right that I and limited to using standard coverage > sprinklers only on a dry system? (Referencing Table 2) > > > > Get *Outlook for iOS* > <https://urldefense.proofpoint.com/v2/url?u=https-3A__aka.ms_o0ukef&d=DwMFAg&c=GKdB6-XpYq_0W-WluyVHtw&r=z4t2hrRBa-JsS06T4X_uuYOSJoclVWgSRO8Nq6TDdsg&m=tNMcU7aVpVRha9JcMzs39hOuLdm2QoM9scTpI3I31xE&s=mTz0h3wiqwf7mow0Q26eCn501DRspcQ4p8keH8M2HQk&e=> > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwICAg&c=GKdB6-XpYq_0W-WluyVHtw&r=z4t2hrRBa-JsS06T4X_uuYOSJoclVWgSRO8Nq6TDdsg&m=tNMcU7aVpVRha9JcMzs39hOuLdm2QoM9scTpI3I31xE&s=rrzwRpv8Si_IKjX2y_kEHeVLzrG7Ibldya6MUbVDgGY&e= > > This message is for the named person's use only. It may contain > confidential, proprietary or legally privileged information. No > confidentiality or privilege is waived or lost by any mistransmission. If > you receive this message in error, please immediately delete it and all > copies of it from your system, destroy any hard copies of it and notify the > sender. You must not, directly or indirectly, use, disclose, distribute, > print, or copy any part of this message if you are not the intended > recipient. > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >
_______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
