I misunderstood a superior and was looking for clarification. Thank you. Ryan Hinson Burns & McDonnell Direct: 952-656-6003 Ext 3662 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Johnson, Duane (NIH/OD/ORS) [C] Sent: Wednesday, March 03, 2010 9:58 AM To: '[email protected]' Subject: RE: Adjacent hazards
If your walls extend to the bottom of the deck/ceiling, then you are physically separated and do not need to extend the higher hazard 15'. Look at that, an AHJ CAN get it right! Duane Johnson, PE Program Manager Division of the Fire Marshal (Support Contractor) Office of Research Services National Institutes of Health 301-496-0487 -----Original Message----- From: Hinson, Ryan [mailto:[email protected]] Sent: Wednesday, March 03, 2010 10:52 AM To: '[email protected]' Subject: Adjacent hazards NFPA 13(2010) section 11.1.2(1) states "Where areas are not physically separated by a barrier of partition capable of delaying heat from a fire in one area from fusing sprinklers in the adjacent area, the required sprinkler protection for the more demanding design basis shall extend 15 ft beyond its perimeter." The appendix gives a storage example. My question is: Is the spacing of the more demanding basis also to be extended that 15 ft for an OH scenario into a LH area through non rated walls? In other words, do I have to protect light hazard corridors or bathrooms with 130 sq ft max sprinkler spacing since they are within 15 ft of mechanical, janitor, and recycling rooms? It seems like overkill to me to have to space heads in a portion of a corridor or bathroom at 130 sq ft unless there are rated walls separating them from the other hazards. Thoughts? Thank you, Ryan L. Hinson, EIT, NICET III Fire Protection Systems Designer, Aviation and Facilities Group Minneapolis-St. Paul Office Burns & McDonnell 8201 Norman Center Drive, Suite 300 Bloomington, MN 55437 Direct: 952-656-6003 Ext 3662 Fax: 952-229-2923 www.burnsmcd.com<BLOCKED::www.burnsmcd.com> Proud to be one of FORTUNE's 100 Best Companies To Work For _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
