There used to be a mindset that concealed sprinklers equaled delayed response and thereby were not given the same regard as a standard pendant. In some cases the concealed sprinks were not permitted at all. I haven't looked at the new FM Data sheet on sprinklers that replaced 2-8N to see if it may make this recommendation.
Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Hill Sent: Friday, April 08, 2011 10:53 AM To: [email protected] Subject: RE: Concealed Sprinklers Limited to Ordinary Hazard Spacing Have a request in. Have seen this from different A/E firms and was wondering if insurance underwriters may have issued a bulletin that I have not seen. This requirement popped up once or twice in the last two months, but six times in the last week. Always like to understand the rationale behind requirements that go against everything that has been beaten into my head over the past 25 years. Thanks for the response. Mike Hill -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Friday, April 08, 2011 10:18 AM To: [email protected]; Mike Hill Subject: RE: Concealed Sprinklers Limited to Ordinary Hazard Spacing If you haven't been able to find it in the Standard (didn't find anything in there myself), I would ask the engineer of record or whoever produced the documents to see if this an Underwriter or owner requirement. Craig L. Prahl, CET Fire Protection CH2MHILL Lockwood Greene 1500 International Drive Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 CH2MHILL Extension 74102 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Hill Sent: Friday, April 08, 2011 9:39 AM To: [email protected] Subject: Concealed Sprinklers Limited to Ordinary Hazard Spacing This may have been covered in the past, but I did not see any mention of it. Recently we have seen contract specifications requiring that concealed sprinklers be spaced for ordinary hazard requirements, while allowing recessed sprinklers to be spaced for light hazard requirements in the same space. Does anyone know where this requirement may be coming from? Want to make sure I didn't something. Michael Hill Vice President Phoenix Fire Protection, Inc. (301) 669-7066 _______________________________________________ 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)
