Double check delivery times. I think you need a 15 second delivery time in 
residential areas. 

Travis Mack, SET
MFP Design, LLC
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Sent from my iPhone

> On Apr 6, 2017, at 6:31 AM, Dewayne Martinez <[email protected]> 
> wrote:
> 
> The dry portion below the attic was laid out at max 15x15 spacing with the
> lines at 15ft above the floor.  The way the rooms layout there are long
> runs with 8ft ceilings so I was going to drop down once to feed all these
> rooms with one line but I still need to size it.  This reviewer will still
> make us calculate the residential build out portion.  I can get by with a
> 1 1/4" line calculating  4 heads.
> 
> -----Original Message-----
> From: Mark Phillips [mailto:[email protected]]
> Sent: Thursday, April 06, 2017 8:17 AM
> To: [email protected]
> Cc: [email protected]
> Subject: Re: NFPA 13 dry system - residential sprinklers
> 
> If I'm understanding
> The roof system is unchanged and your adding a lower supply to be rooms.
> 
> Use standard qr heads and same pipe sizes
> 
> The roof is still most demanding
> 
> Sent from my Verizon 4G LTE Droid
> On Apr 6, 2017 9:14 AM, Dewayne Martinez <[email protected]>
> wrote:
> NFPA 13 (07ed)
> 
> I have an existing 5th floor shell space that is installed as a light
> hazard dry system that has pipe in the shell space and in the attic.  They
> are turning this floor into a dormitory (R-2).
> 1)Can I use listed residential heads on return bends and only pick up 4
> heads per 11.3.1.1 or will I need to pick up 1950SF?  What if there are
> incidental areas such as a laundry room, ect. in the same areas as the
> dorm rooms?
> 2)What would be the required trip time be per Table 7.2.3.6.1?  15sec for
> residential or 60sec for light hazard?
> 
> Thanks,
> Dewayne Martinez
> Fire Protection Design Manager
> 
> TOTAL Mechanical
> Building Integrity
> W234 N2830 Paul Rd.
> Pewaukee, WI  53072
> [email protected]<mailto:[email protected]>
> Ph:  262-522-7110
> Cell: 414-406-5208
> http://www.total-mechanical.com/
> 
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> 
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