I use the excel sheet from Meyer Fire for main drain test, it tells me 698
gpm at 37 psi residual




Thanks



Brett Peters
General Manager Installation & Design
Proudline Fire Protection Services Ltd.
[email protected]
780 490 7602 office ext 202
780 490 7605 fax
780 777 0568 cell
780 718 2676 24h
Visit us at www.proudline.ca

Proudline now offers ULc listed monitoring services, please contact
[email protected] for more information






On Wed, Sep 11, 2024 at 10:12 AM Travis Mack <[email protected]> wrote:

> 775 gpm seems quite high coming out of a 2" pipe.  I would be skeptical of
> that number.
>
>
>
> Travis Mack, SET
>
> *M.E.P.CAD* | Instructor / Support
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> 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074
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> ------------------------------
> *From:* Rocci 3 Cetani <[email protected]>
> *Sent:* Wednesday, September 11, 2024 9:07 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
> Thanks Brian that’s helpful! Based on that the main drain is flowing 775
> GPM
>
>
>
> *Rocci Cetani III, **CET*
>
> *Senior Designer*
>
> *Water-Based Fire Protections Systems Layout, Nicet Level III*
>
>
>
>
>
> *Northern California Fire Protection Services Inc.*
>
> 16840 Joleen Way Bldg. A
>
> Morgan Hill, CA 95037
>
> P-(408) 776-1580 EXT.1010
>
> F-(408) 776-1590
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>
> To help better serve you. Please visit our new and improved website at:
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> *From:* Brian Harris <[email protected]>
> *Sent:* Wednesday, September 11, 2024 8:42 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
>
> Meyer Fire has an estimating tool for Main Drain test you might find
> helpful.
>
>
>
> Thank you,
>
>
>
> *Brian Harris, CET*
>
> BVS Systems Inc.
>
>
>
> *From:* Rocci 3 Cetani <[email protected]>
> *Sent:* Wednesday, September 11, 2024 11:38 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
>
> No clue but it gushes and its a lot of water….. To get that info we would
> have to put a PITOT on it
>
>
>
> *Rocci Cetani III, **CET*
>
> *Senior Designer*
>
> *Water-Based Fire Protections Systems Layout, Nicet Level III*
>
>
>
>
>
> *Northern California Fire Protection Services Inc.*
>
> 16840 Joleen Way Bldg. A
>
> Morgan Hill, CA 95037
>
> P-(408) 776-1580 EXT.1010
>
> F-(408) 776-1590
>
>
>
> To help better serve you. Please visit our new and improved website at:
>
> www.norcalfire.com
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__linkprotect.cudasvc.com_url-3Fa-3Dhttps-253a-252f-252fwww.norcalfire.com-26c-3DE-2C1-2CmklhcZzHoZPvChftzTitLgSMovE7oiIrLcVJlji0PrQzj916CayrBN15afOxmaG7kQOQFIAuiV7o-5F4S6PXK2LUIkm3W28F5UfdxAZCfgXZ8QFQ-2C-2C-26typo-3D1-26ancr-5Fadd-3D1&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=hLXh1DXRDwJ3oz4y7iNesSsetYhUUV0wawfPGfwmYxQ&m=4MgkwyfUkSqSH5EthDszEx6bxHotseuzJPrGd0B3SN54F7kWYQO0OjgjvIOUm5gX&s=BFMUf-8lHBk9imzNQGhrrjN2JKb5_XtpjVjUokZkiTM&e=>
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> *From:* Kyle.Montgomery <[email protected]>
> *Sent:* Wednesday, September 11, 2024 8:26 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
>
> Do you think, at 37 psi, that you’re pushing more than 361 GPM through
> that 2” drain?
>
>
>
> *Kyle Montgomery*
>
>
>
> *Aero Automatic Sprinkler Co.*
>
> *21605 N. Central Ave.*
>
> *Phoenix, AZ 85024*
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> *Direct: 623.580.7820*
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> *Cell: 602.763.4736*
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> [email protected]
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>
>
>
>
>
>
> *From:* Rocci 3 Cetani <[email protected]>
> *Sent:* Wednesday, September 11, 2024 8:17 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
>
> 6” feed in the stairwell with a 4” sectional and 2” drain
>
>
>
> *Rocci Cetani III, **CET*
>
> *Senior Designer*
>
> *Water-Based Fire Protections Systems Layout, Nicet Level III*
>
>
>
>
>
> *Northern California Fire Protection Services Inc.*
>
> 16840 Joleen Way Bldg. A
>
> Morgan Hill, CA 95037
>
> P-(408) 776-1580 EXT.1010
>
> F-(408) 776-1590
>
>
>
> To help better serve you. Please visit our new and improved website at:
>
> www.norcalfire.com
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__linkprotect.cudasvc.com_url-3Fa-3Dhttps-253a-252f-252fwww.norcalfire.com-26c-3DE-2C1-2Cwou81MxbTNFOb5Wrybk6hAM1TkdVtQn18-2DDS-5FMAvJT2hcqP7CydJobiIvDjYg2PpsvNscDJReCUEWlRWkvoSKX2sfg906Fxcig4N-5F4-5F4GicLUDc-2C-26typo-3D1-26ancr-5Fadd-3D1&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=hLXh1DXRDwJ3oz4y7iNesSsetYhUUV0wawfPGfwmYxQ&m=4MgkwyfUkSqSH5EthDszEx6bxHotseuzJPrGd0B3SN54F7kWYQO0OjgjvIOUm5gX&s=vCmAO1iPPQj_ZKR0i-3jV35t8lPjv4qxQiEAuTfrZPM&e=>
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> *From:* Kyle.Montgomery <[email protected]>
> *Sent:* Wednesday, September 11, 2024 8:12 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: [External]Re: main drain test
>
>
>
> What size riser and drain?
>
>
>
> *From:* Rocci 3 Cetani <[email protected]>
> *Sent:* Wednesday, September 11, 2024 8:07 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [External][Sprinklerforum] Re: main drain test
>
>
>
>
>
> Demand is 361 gpm  with 45 PSI @ BOR. Main drain test they are getting 37
> residual
>
> *Rocci Cetani III, **CET*
>
> *Senior Designer*
>
> *Water-Based Fire Protections Systems Layout, Nicet Level III*
>
>
>
>
>
> *Northern California Fire Protection Services Inc.*
>
> 16840 Joleen Way Bldg. A
>
> Morgan Hill, CA 95037
>
> P-(408) 776-1580 EXT.1010
>
> F-(408) 776-1590
>
>
>
> To help better serve you. Please visit our new and improved website at:
>
> www.norcalfire.com
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__linkprotect.cudasvc.com_url-3Fa-3Dhttps-253a-252f-252fwww.norcalfire.com-26c-3DE-2C1-2Cypo-2DhmJif318ePaAIPvyejzM7sa42vkXcVSWq2hma8JCF-5FsYNcgOt9-2D58KHlgTq5dY4ZmdHUzWUmfQrxUZJ-5Fn6I1cvAMB-2DCvVk-2DH08hQ3FPMEdoavQ-2C-2C-26typo-3D1-26ancr-5Fadd-3D1&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=hLXh1DXRDwJ3oz4y7iNesSsetYhUUV0wawfPGfwmYxQ&m=4MgkwyfUkSqSH5EthDszEx6bxHotseuzJPrGd0B3SN54F7kWYQO0OjgjvIOUm5gX&s=4epqfbB5mlpZ6nuXQESD6qKK1XFs9Rqt7bblZ_Tb_lE&e=>
>
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>
> *From:* Steve Leyton <[email protected]>
> *Sent:* Wednesday, September 11, 2024 7:55 AM
> *To:* Discussion list on issues relating to automatic fire sprinklers <
> [email protected]>
> *Subject:* [Sprinklerforum] Re: main drain test
>
>
>
> Assuming that the demand from the calc area is for OH 1or 2 (and no inside
> hose), your demand is somewhere between 250 and 300 gpm If you modeled a
> full 1,500 sq ft, no? And what is the residual pressure required?
>
>
>
>
>
> Steve Leyton
>
>
>
> Sent from my "Smart" Phone, so apologies for any typos or voice-to-text
> corruptions.
>
>
>
>
>
>
>
> -------- Original message --------
>
> From: Rocci 3 Cetani <[email protected]>
>
> Date: 9/11/24 7:19 AM (GMT-08:00)
>
> To: [email protected]
>
> Subject: [Sprinklerforum] main drain test
>
>
>
> We have a jurisdiction that failed our final inspection because the
> residual pressure during the main drain test doesn’t match our BOR residual
> pressure from the hydraulic calcs for and OH extended coverage system.  Am
> I missing something? I don’t see how the residual pressure on a main drain
> test has anything to do with the residual pressure  from our calcs…..I was
> always under the impression main drain tests were to verify there hasn’t
> been a been a drastic change to the supply . This was an existing parking
> garage where they added solar panels on the top level so we added a
> sectional riser @ the top floor and added the new system. The fire
> department just keeps saying to upsize the riser from the 1st floor to
> the 4th floor which literally does nothing to my calcs. The building
> owner has spent 10’s of thousands of dollars flushing the UG, inspecting
> the UG for obstructions, paid for additional flow test  and serviced the
> back flow.  We are at a complete loss on what else to do as the fire
> department is adamant that’s the main drain test has to match the hydraulic
> calcs…..anyone ever come across a situation like this with a jurisdiction?
> Any suggestions?
>
>
>
> *Rocci Cetani III*
>
>
>
> *Northern California Fire Protection Services Inc.*
>
> 16840 Joleen Way Bldg. A
>
> Morgan Hill, CA 95037
>
> P-(408) 776-1580 EXT.1010
>
> F-(408) 776-1590
>
>
>
> To help better serve you. Please visit our new and improved website at:
>
> www.norcalfire.com
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__linkprotect.cudasvc.com_url-3Fa-3Dhttps-253a-252f-252fwww.norcalfire.com-26c-3DE-2C1-2C7zy7IWDFl7WhyVO2rc-5FfD2Qggpjudq9RY4UToa1lNX4cxZxcKfz-2D4g6Y3tjr6DoY84Hj-5F0-5F2DEaJ2Fj8xllC3pU-5FgdVH7kji7IxBk0jTQTv8T1utM-2DI15Q-2C-2C-26typo-3D1-26ancr-5Fadd-3D1&d=DwMFAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=hLXh1DXRDwJ3oz4y7iNesSsetYhUUV0wawfPGfwmYxQ&m=4MgkwyfUkSqSH5EthDszEx6bxHotseuzJPrGd0B3SN54F7kWYQO0OjgjvIOUm5gX&s=cw5j8NI1AgErRaOjhotqF82eM7CWpuwjoiSoRZP13Go&e=>
>
>
>
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