OK, so a quick look shows that for a 1" tee with flow turning 90 degrees, NFPA 13 gives that an equivalency of 5 ft.
Looking at one of the mechanical tee manufactures (strap on tee) they are showing a 1" outlet as being equal to 0.5 ft. of pipe. (I would have thought it to be much higher) I could not find any EQ L on a thread-o-let. I figure a mech tee probably has similar friction coefficient to a thread-o-let since the only difference between the two is welded versus strapped on. Things that make you go hmmmmmmmm. Now if we only had a resident mathemagician who could give us the formulae needed to solve this kind of conundrum............. Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 | craig.pr...@jacobs.com<mailto:craig.pr...@jacobs.com> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of Travis Mack, SET, CFPS, CWBSP, RME-G Sent: Wednesday, June 26, 2019 2:30 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: [EXTERNAL] Welded outlets - Equivalent feet Yes. With regard to this particular question. [MFP_logo_F]<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.mfpdesign.com_&d=DwMFAg&c=OgZOSER8c1RLeytEexU279Q2qk0jVwkrOdYe5iSi-kk&r=_w721WvezJkWUVteY4FMhecHAoDqOn85ooHi6vIkMag&m=KJHRFG_rnxzKtj49uCz3wwtL_jZ2FseV_8y_W1HsBQs&s=v6mckuUsFPUZlbR3nrBKtKH9WpvfAf9C_QnJ20BNe00&e=> Travis Mack, CFPS, CWBSP, RME-G, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 tm...@mfpdesign.com<mailto:tm...@mfpdesign.com> www.mfpdesign.com<http://www.mfpdesign.com> Send large files to us via: https://www.hightail.com/u/MFPDesign<https://urldefense.proofpoint.com/v2/url?u=https-3A__na01.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Fwww.hightail.com-252Fu-252FMFPDesign-26data-3D02-257C01-257C-257C1121d49f9e6b4cf248f108d4df580e77-257C14e5497c16da42e69ffa77d19bafe511-257C0-257C0-257C636379016677342180-26sdata-3DeGdMZGu2wXhUupGwgGTrqF3b54OP5-252BAZvlHhABSexWY-253D-26reserved-3D0&d=DwMFAg&c=OgZOSER8c1RLeytEexU279Q2qk0jVwkrOdYe5iSi-kk&r=_w721WvezJkWUVteY4FMhecHAoDqOn85ooHi6vIkMag&m=KJHRFG_rnxzKtj49uCz3wwtL_jZ2FseV_8y_W1HsBQs&s=e7BTtHrtfCVCuOVnKCN1AJlgySlV0-8uwo2zf6xBrDQ&e=> LinkedIn: https://www.linkedin.com/in/travismack<https://urldefense.proofpoint.com/v2/url?u=https-3A__na01.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Fwww.linkedin.com-252Fin-252Ftravismack-26data-3D02-257C01-257C-257C1121d49f9e6b4cf248f108d4df580e77-257C14e5497c16da42e69ffa77d19bafe511-257C0-257C0-257C636379016677342180-26sdata-3DtT5E7LsZjSmyreKi4gDCa70EWN-252BZodi-252FhbeCbHNRijI-253D-26reserved-3D0&d=DwMFAg&c=OgZOSER8c1RLeytEexU279Q2qk0jVwkrOdYe5iSi-kk&r=_w721WvezJkWUVteY4FMhecHAoDqOn85ooHi6vIkMag&m=KJHRFG_rnxzKtj49uCz3wwtL_jZ2FseV_8y_W1HsBQs&s=1Jca0QVbPfPKaWVeEPQWwhGHvRK8RceoMdXSR7BJSA8&e=> "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 Prahl, Craig/GVL Sent: Wednesday, June 26, 2019 11:29 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: RE: [EXTERNAL] Welded outlets - Equivalent feet Is the PE's problem with the program using tees and you actually using welded outlets? Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 | craig.pr...@jacobs.com<mailto:craig.pr...@jacobs.com> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org<mailto:sprinklerforum-boun...@lists.firesprinkler.org>> On Behalf Of Travis Mack, SET, CFPS, CWBSP, RME-G Sent: Wednesday, June 26, 2019 12:58 PM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: [EXTERNAL] Welded outlets - Equivalent feet Does anyone have a data sheet with the equivalent feet to use in hydraulic calculations. I have a PE reviewing plans (already approved by local AHJ), that is not allowing the fittings used in our program. Our program just uses the tee in NFPA 13. Never mind we have at least 20 psi margins in all of the calculations. 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