Could you apply 8.15.7.4 to omit?
This doesn’t take into account the “trellis” type ceiling but being the trellis 
will not have walls and no occupancy above (A.8.15.7.2) I would think you can 
omit coverage. 
A bit of a stretch as far as backing it up with code though, I know. 

Regards,
 
Wayne T. Cordiner, Jr.
917-426-5844
[email protected]

> On Jun 25, 2018, at 10:35, Travis Mack <[email protected]> wrote:
> 
> It’s a golf clubhouse with a radius projection. There are limited spots to 
> hang if we have to protect this space. It’s just a big cluster bomb. 
> 
> 
> Travis Mack, SET
> MFP Design, LLC
> "Follow" us on Facebook: 
> https://www.facebook.com/pages/MFP-Design-LLC/92218417692
> Send large files to MFP Design via:
> https://www.hightail.com/u/MFPDesign
> 
> Sent from my iPhone
> 
>> On Jun 25, 2018, at 8:24 AM, Prahl, Craig/GVL <[email protected]> wrote:
>> 
>> 8.15.14 doesn’t apply to this application.  That section is for grated 
>> “ceilings” installed below sprinklers.
>>  
>> Trellis construction being open is similar to a pergola where there is no 
>> ceiling/roof.
>>  
>> Being open, you can’t trap heat or smoke as long as they don’t plan to let 
>> plants grow on the trellis work to create a “green roof/ceiling”.
>>  
>> Is this for public seating?  If it is, there may be local requirements for 
>> overhead materials if they are combustible. 
>>  
>>  
>>  
>> Craig Prahl | Jacobs | Group Lead – Fire Protection | 864.676.5252 | 
>> [email protected] | www.jacobs.com
>>  
>> From: Sprinklerforum [mailto:[email protected]] 
>> On Behalf Of Kyle.Montgomery
>> Sent: Monday, June 25, 2018 11:02 AM
>> To: [email protected]
>> Subject: RE: [EXTERNAL] RE: % open
>>  
>> Then I don’t think the section sited below is the correct application. I’m 
>> honestly not sure where that is quantified. We usually are successful making 
>> the argument that it won’t trap heat, but I can’t think of where that’s 
>> actually spelled out in the code.  I’m interested in the responses to this 
>> one.
>>  
>> Would it not otherwise meet the criteria for omitting sprinklers under an 
>> exterior projection?
>>  
>> -Kyle M
>>  
>> From: Sprinklerforum [mailto:[email protected]] 
>> On Behalf Of MFP Design, LLC
>> Sent: Monday, June 25, 2018 7:52 AM
>> To: [email protected]
>> Subject: [EXTERNAL] RE: % open
>>  
>> Yes.  That is exactly it.
>>  
>> <image001.jpg>
>> Travis Mack, SET
>> MFP Design, LLC
>> 3356 E Vallejo Ct
>> Gilbert, AZ 85298
>> 480-505-9271
>> fax: 866-430-6107
>> email:[email protected]
>>  
>> http://www.mfpdesign.com
>> https://www.facebook.com/pages/MFP-Design-LLC/92218417692
>> Send large files to us via: https://www.hightail.com/u/MFPDesign
>> LinkedIn: https://www.linkedin.com/in/travismack
>>  
>> “The bitterness of poor quality remains long after the sweetness of low 
>> price is forgotten.”
>>  
>> From: Sprinklerforum <[email protected]> On 
>> Behalf Of Kyle.Montgomery
>> Sent: Monday, June 25, 2018 7:52 AM
>> To: [email protected]
>> Subject: RE: % open
>>  
>> Travis,
>>  
>> Are you talking about an exterior trellis? Something that would not have 
>> sprinklers above, just open to the sky above?
>>  
>> -Kyle M
>>  
>> From: Sprinklerforum [mailto:[email protected]] 
>> On Behalf Of John Paulsen
>> Sent: Monday, June 25, 2018 7:48 AM
>> To: [email protected]
>> Subject: [EXTERNAL] RE: % open
>>  
>> 8.15.14.1 (2013)
>>  
>> John Paulsen – SET
>> Crown Fire System Design
>> 6282 Seeds Rd.
>> Grove City, OH 43123
>> P – 614-782-2438
>> F – 614-782-2374
>> C – 614-348-8206
>>  
>>  
>>  
>> From: Sprinklerforum [mailto:[email protected]] 
>> On Behalf Of MFP Design, LLC
>> Sent: Monday, June 25, 2018 10:44 AM
>> To: [email protected]
>> Subject: % open
>>  
>> I have a project where the architect is asking what is the % opening 
>> required in a trellis type structure so that sprinklers are not required.  
>> 70% open is coming to mind, but I can’t find a section referencing anything 
>> like that.  Can anyone help point me in the right direction?
>>  
>> <image002.jpg>
>> Travis Mack, SET
>> MFP Design, LLC
>> 3356 E Vallejo Ct
>> Gilbert, AZ 85298
>> 480-505-9271
>> fax: 866-430-6107
>> email:[email protected]
>>  
>> http://www.mfpdesign.com
>> https://www.facebook.com/pages/MFP-Design-LLC/92218417692
>> Send large files to us via: https://www.hightail.com/u/MFPDesign
>> LinkedIn: https://www.linkedin.com/in/travismack
>>  
>> “The bitterness of poor quality remains long after the sweetness of low 
>> price is forgotten.”
>>  
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