I've seen this argument before. I bet the "fpe" is saying no more than 8', right? (I think you are saying you are 4' from the wall and 5' from the beam.) It's so illogical I can't even understand how one thinks these things up. Had a FM pull this on some EC's calc'ed 16x16 but less than 8' from the wall was the most recent example. Just follow SxL as indicated in the standard noting the words MAXIMUM for spacing to the wall. "Choose the larger of EITHER twice the distance to the wall OR the distance to the next..."
Chris Cahill, P.E. Fire Protection Engineer Sentry Fire Protection, Inc. 763-658-4483 763-658-4921 fax Email: [email protected] Mail: P.O. Box 69 Waverly, MN 55390 Location: 4439 Hwy 12 SW Waverly, MN 55390 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Cliff Whitfield Sent: Monday, February 08, 2010 3:40 PM To: [email protected] Subject: Beam obstruction rules Forum, I have a question regarding beam obstruction rules for standard spray uprights. I have a light hazard project that has 15" deep beams. The first beam is 9' from the wall and the next beam is 17' away from beam #1. If I space my first head 5' away from beam #1 so that it is not an obstruction (per table 8.6.5.1.2-NFPA 13, 2007 ed), can my next head be 15' from head #1? This is not supposed to be a trick question but I have a disagreement with an FPE on this. Thanks for your insight on this one. Cliff Whitfield, SET President Fire Design, Inc. [email protected] www.fire-design.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of George Church Sent: Monday, February 08, 2010 3:01 PM To: [email protected] Subject: L'il Abner-Mattress Tester Back in 2007 the CPSC required a fire-resistant outer (fabric) shell on all mattresses and box springs for sale in the USA. Is anyone familiar with this to be able to tell if this reduces the hazardous classification of the foam when stored in a retail store stockroom to 12' high? Stored on floor, flat, as if prepared for a princess and a pea. Owner would prefer not to take .2/1500 to .6 for obvious reasons, one being tenant fitout of a portion of an existing retail center. George Church Rowe Sprinkler _______________________________________________ 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)
