I have appreciated the many opportunities to learn much from reading the exchanges on this forum. Today I am inclined to add this comment: "They are turning this floor into a dormitory (R-2)". I believe that the change of occupancy classification / use would dictate compliance with the code/ standards that are current to the time of change, which if I understand this thread is the present. The recommendation to install a wet system seems most appropriate. One man's opinion.
Ed Foster Fire Marshal Fire Prevention Bureau Carpinteria-Summerland Fire District (805) 566-2451 [cid:82df1ca92855c9c2623baa3ddf8c0acda8677ac1@zimbra] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Parsley Consulting Sent: Thursday, April 06, 2017 9:02 AM To: [email protected] Subject: Re: NFPA 13 dry system - residential sprinklers Remember friends that the text Travis quoted was added in the 2010 edition of -13. Dewayne's inquiry began with a note that his project was governed by the 2007. Still, the value for dry system water delivery time of 15 seconds for residential occupancies was the first item in Table 7.2.3.6.1. Ken Wagoner, SET Parsley Consulting 350 West 9th Avenue, Suite 206 Escondido, California 92025 Phone 760-745-6181 Visit our website<http://www.parsleyconsulting.com/> On 04/06/2017 8:36 AM, Travis Mack, SET wrote: It can be R or I occupancy. It doesn't matter. It is the fact you are protecting a dwelling unit with a dry pipe system. 7.2.3.6.3 For dry pipe systems protecting dwelling unit portions of any occupancy, the sprinklers in the dwelling unit shall have a maximum water delivery time of 15 seconds to the single most remote sprinkler. It seems like you have 15 seconds regardless. Now, if you have a dry pipe valve on the first floor and I believe you said these were on the 5th floor, it seems quite unlikely you will get 15 seconds. My suggestion is to find a way to supply these sprinklers in the dwelling units from a wet pipe system. Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:[email protected]<mailto: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 On 4/6/2017 8:16 AM, Dewayne Martinez wrote: That was one of my concerns also. R-2 floor occupancy, calculating it per light hazard but using residential heads. If the R-2 occupancy is what would dictate the 15sec delivery time then it wouldn't matter what type of heads I used in the residential areas. From: Sprinklerforum [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Travis Mack Sent: Thursday, April 06, 2017 8:58 AM To: [email protected]<mailto:[email protected]> Subject: Re: NFPA 13 dry system - residential sprinklers Double check delivery times. I think you need a 15 second delivery time in residential areas. 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 Apr 6, 2017, at 6:31 AM, Dewayne Martinez <[email protected]<mailto:[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]<mailto:[email protected]> Cc: [email protected]<mailto:[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]<mailto:[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]><mailto:[email protected]> Ph: 262-522-7110 Cell: 414-406-5208 http://www.total-mechanical.com/ [cid:[email protected]] [cid:[email protected]] [cid:[email protected]] [Top Workplaces 2015] TOTAL Mechanical voted "Top Workplace" for a 4th consecutive year. _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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