Good points - my answer was too general. So long as you meet the flexibility and/or annular space clearance requirements, the penetration can be of any approved configuration. So a floor slab could be blocked out when it's poured, sleeved, cored (not likely but I suppose it could happen), etc.
Steve Leyton -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, February 14, 2013 7:05 AM To: [email protected] Subject: RE: underground to riser Doesn't "9.3.4 Clearance" only specify a minimum dimensional allowance of space around pipes passing through structural elements? I didn't see where it actually requires sleeves (ref. 2007 NFPA 13). If this sleeve is required on the vertical run-in as the UG pipe passes through the floor, that's not uncommon as often in new construction the sleeve allows the concrete to be poured leaving the opening and not requiring core drilling or cutting later. More of a preference for construction than an actual requirement. If it's in the horizontal run on the UG pipe as it passes below or through footings or foundation walls then that's another issue. Some of those details have been copied and re-copied from jobs where there was foundational loading on the UG pipe or the UG pipe was plastic and needed to be run in a sleeve to protect it from the vertical load of the foundation above. Unless the structural engineer has warned the ME that there could be issues with pipes passing under these structural elements, typically for ductile iron pipe there's no need for a sleeve around the fire run-in. 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 Steve Leyton Sent: Thursday, February 14, 2013 9:53 AM To: [email protected] Subject: Re: underground to riser Protection of piping from damage due to earthquakes, NFPA 13, Chapter 9. Steve Leyton "Easter, Timothy" <[email protected]> wrote: I am told to provide a sleeve for the underground piping that penetrates the floor to riser. I can't find any nfpa code that requires this. Help. Regards, Timothy Easter E.I.T. Graduate Fire Protection Engineer URS Corporation 11832 Rock Landing Drive Suite 306 Newport News, VA 23606 Direct: (757) 383-6217 Fax: (757) 873-0634 [email protected]<mailto:[email protected]> This e-mail and any attachments contain URS Corporation confidential information that may be proprietary or privileged. If you receive this message in error or are not the intended recipient, you should not retain, distribute, disclose or use any of this information and you should destroy the e-mail and any attachments or copies. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachme nts/20130214/a0aded59/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
