You can do both designs (density/area and end head pressure), we do it frequently to cover different risks within the same area. A sprinkler doesn’t know what it is! It is just a orifice/k factor with some pressure behind it. We would typically use smaller ‘storage’/ESFR heads and do one calculation for the CMDA design and another one for the storage design.
For example: The VK500 is a UL approved ESFR sprinkler. It is FM approved as a quick response non-storage sprinkler and also FM approved as a quick response storage sprinkler. It can be used in various types of designs. But I agree, clarification is required. Nicky Marshall Southern Regional Manager PROTECH DESIGN LIMITED Specialist Fire Protection Consultants Phone: +64 (0)3 579 5577 extn 2 Mobile: +64 (0)21 433 488 Email: ni...@protechdesign.co.nz<mailto:ni...@protechdesign.co.nz> Skype: nicky-marshall Web :www.protechdesign.co.nz Address:105A Alabama Rd, Redwoodtown, Blenheim 7201, NZ Postal: PO Box 4022, Redwood Village, Blenheim 7242, NZ “I always wondered why somebody doesn't do something about that. Then I realised I was somebody” Lily Tomlin From: MFP Design, LLC <tm...@mfpdesign.com> Sent: Tuesday, 5 June 2018 4:11 AM To: sprinklerforum@lists.firesprinkler.org Subject: RE: FM Mutual & ESFR Heads ESFR are not spray sprinklers and can not be interchanged to meet a density/area curve. [MFP_logo_F] Travis Mack, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:tm...@mfpdesign.com<mailto:email:tm...@mfpdesign.com> http://www.mfpdesign.com<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=HJ8OA4xyeHAoxXNz5mu%2FYfycgtd5nsFrrpvzulZiNkQ%3D&reserved=0> https://www.facebook.com/pages/MFP-Design-LLC/92218417692<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fpages%2FMFP-Design-LLC%2F92218417692&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=H%2BwdcgK8DLGBcNoqJEvUrzsXngySwkX56Vgf9gM9EGk%3D&reserved=0> Send large files to us via: https://www.hightail.com/u/MFPDesign<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> LinkedIn: https://www.linkedin.com/in/travismack<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Ftravismack&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=tT5E7LsZjSmyreKi4gDCa70EWN%2BZodi%2FhbeCbHNRijI%3D&reserved=0> “The bitterness of poor quality remains long after the sweetness of low price is forgotten.” From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Nick Maneen Sent: Monday, June 4, 2018 9:08 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: FM Mutual & ESFR Heads K=Q/•P K=42/•7 K=42/2.65 K=15.85 Use K14 sprinklers or K16.8 depending on what your water supply is. Nick Maneen, SET c 704.791.7789 From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Brian Harris Sent: Monday, June 04, 2018 11:55 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: FM Mutual & ESFR Heads Mark- So riddle me this, I’m working on a project that specifies ESFR heads and FM wants .42/2000. What are my options ? Brian Harris, CET BVS Systems Inc. bvssytemsinc.com<http://bvssystemsinc.com/> From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Mark Sornsin [FAR] Sent: Monday, June 04, 2018 11:46 AM To: 'sprinklerforum@lists.firesprinkler.org' Subject: RE: FM Mutual & ESFR Heads So the answer is, no. FM has not banned ESFR systems. They have just stopped recognizing the ESFR term. Many sprinklers you know as ‘ESFR’ they simply refer to as a ‘storage sprinkler.’ Likewise as Travis and Craig noted, there are some sprinklers they recognize as ‘storage’ that are not identified as ESFR by the manufacturer. [Visit our Website at www.SummitCoUS.com]<http://www.SummitCoUS.com> Mark Sornsin Sr. Fire Protection Engineer Direct: 701-499-1391 Cell: 701-526-8585 From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Brian Harris Sent: Monday, June 04, 2018 9:26 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: FM Mutual & ESFR Heads I may be having a senior moment but I swear I remember reading something about FM not allowing ESFR systems….. Is that even remotely true? Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________
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