Matt, I haven't dealt with that situation in real life, but have in theory had several conversations about it. I am in agreement with you that this should be allowable per the code language. You never exceed 110 s.f. and the average ACTUAL FLOOR AREA (not SxL) does not exceed 100 s.f.
-Kyle M -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of Matt Grise via Sprinklerforum Sent: Tuesday, January 18, 2022 8:22 AM To: [email protected] Cc: Matt Grise <[email protected]> Subject: [EXTERNAL] RE: ESFR obstruction shift No - since we are moving along the line, when one space goes from 10 to 11, the space on the other side goes from 10' to 9' Matt -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of Matthew J Willis via Sprinklerforum Sent: Tuesday, January 18, 2022 9:00 AM To: [email protected] Cc: Matthew J Willis <[email protected]> Subject: RE: ESFR obstruction shift Are you not creating a 10x11 situation since you are moving every other sprinkler? If so, you may be violating the 100 sq ft per average requirement for moved and adjacent? R/ Matt -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of Matt Grise via Sprinklerforum Sent: Tuesday, January 18, 2022 6:00 AM To: [email protected] Cc: Matt Grise <[email protected]> Subject: ESFR obstruction shift I am looking at a warehouse layout where we can get a very nice head pattern by laying the heads out 10ft by 10ft, and then shifting the ones that land near joists 1ft along the line as allowed by NFPA 13. The only issue is that we have to shift every other head. Making a 9ft - 11ft pattern along the branch line. As far as I can tell, this meets the letter of the code, but it seems like a stretch. Has anyone come across a similar situation where so many heads needed to be shifted to avoid roof structures? Matt _______________________________________________ Sprinklerforum mailing list [email protected] https://urldefense.com/v3/__https://linkprotect.cudasvc.com/url?a=http*3a*2f*2flists.firesprinkler.org*2flistinfo.cgi*2fsprinklerforum-firesprinkler.org&c=E,1,l1exGGqk0cDcPNoSdqRWtD1YmZdqStCzx0CUF-Olhi1rqB9Iz8Fn6d7eBTNXNMfF8T-7GZY94qom2OweTyV4Gyin1hiL-CJ82tDF4yhwF7g0ofhpr4fwsNalRZM,&typo=1__;JSUlJSU!!Ba8_KKAT!eogk1pEssHmJtaZHhoNM1xMOrahW4a40OEoiC7xHQPIDjpwV0fnvj8Sfjpv8d1bFGzI$ _______________________________________________ Sprinklerforum mailing list [email protected] https://urldefense.com/v3/__https://linkprotect.cudasvc.com/url?a=http*3a*2f*2flists.firesprinkler.org*2flistinfo.cgi*2fsprinklerforum-firesprinkler.org&c=E,1,faagUYTvRqNofSbZjC709kxTbRDQVTelhUkbtQ0AWq4V349KeRLZVnCRia1Vjt6yQqBjB_beLshOylNEy-3N0UIJJJFKTWvWeUpRcWUx-0A,&typo=1__;JSUlJSU!!Ba8_KKAT!eogk1pEssHmJtaZHhoNM1xMOrahW4a40OEoiC7xHQPIDjpwV0fnvj8Sfjpv8sH-n2sk$ _______________________________________________ Sprinklerforum mailing list [email protected] https://urldefense.com/v3/__http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org__;!!Ba8_KKAT!eogk1pEssHmJtaZHhoNM1xMOrahW4a40OEoiC7xHQPIDjpwV0fnvj8Sfjpv8Su2SCv4$ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
