Could be (I'll defer to the locals). The one-piece thing is something I know the Air Force/ Air National Guard allows as a means to avoid a joint under aircraft hangar buildings. NFPA doesn't restrict the type of pipe under the building (as long as it's an approved fire protection pipe material). Again, you may have engineer's preferences at work, or other agency requirements.
Mark A. Sornsin, P.E. | Karges-Faulconbridge, Inc. | Fire Protection Engineer | Fargo, ND | direct: 701.552.9905 | mobile: 701.371.5759 | http://www.kfiengineers.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Rocci Cetani 3 Sent: Thursday, May 5, 2016 1:45 PM To: [email protected] Subject: RE: underground pipe under building footings Mark- We are running under the entire ramp (about 18' long) It's a switchback ramp so the (e) main will be running under the top landing of the ramp. I don't design a lot of underground but when I do we have always been instructed to transition to DI or a 1 piece stainless steel riser from our UG subs and or local FM's because the PVC isn't allow under the footings......is this maybe just a California thing? Rocci Cetani III, CET Lead Designer Water-Based Fire Protections Systems Layout, Nicet Level III Northern California Fire Protection Services Inc. 16840 Joleen Way Bldg. A Morgan Hill, CA 93037 P-(408) 776-1580 EXT.111 F-(408) 776-1590 [email protected] www.norcalfire.com CONFIDENTIALITY NOTICE: This message and any document accompanying it may contain confidential information belonging to the sender. The information is intended only for the use of individual or entity named above. If you are not the intended recipient, or the employee or agent responsible to deliver this message to the intended recipient, you are hereby notified that any disclosure, copying or taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this transmission in error, please immediately notify us by telephone to arrange for return of the documents. -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Mark A. Sornsin, P.E. Sent: Thursday, May 05, 2016 11:34 AM To: [email protected] Subject: RE: underground pipe under building footings Rocci - There is no restriction regarding running lead-in piping under footings. The restriction is how far into the building you run the line. The concern is the damage created by the failure of a (normally) large diameter fire main, as well as the extensive downtime required to repair such a main if it were located a large distance from the outside of the building. Generally speaking you are to bring the main up as close to the outside wall as practical given your circumstances. Exceptions are granted if you rout the pipe in a trench in the building floor with a removable cover. NFA 24 or chapter 10 of NFPA 13 will give you this guidance. In your situation I'd want to know if you are crossing under the narrow dimension of the ADA ramp or if the entire ramp covers the pipe. In either case I don't think you violate NFPA guidance, per se. But if there's a way to avoid having the entire ramp over this main it should be considered. I.e., it's more of a best practices issue. Mark A. Sornsin, P.E. | Karges-Faulconbridge, Inc. | Fire Protection Engineer | Fargo, ND | direct: 701.552.9905 | mobile: 701.371.5759 | http://www.kfiengineers.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Rocci Cetani 3 Sent: Thursday, May 5, 2016 1:24 PM To: [email protected] Subject: underground pipe under building footings Before I go digging through a bunch of books I figured I'd try and save some time by asking all you EXPERTS. Does anyone know which code states underground fire service can't run under footings? We have a project where a chemical bunker is being built and the ADA accessible ramp up to the bunker is being built directly over an (e) 10" C-900 fire service and our new tap that is going to feed the system in the bunker. Thanks in advance for your responses. Rocci Cetani III, CET Lead Designer Water-Based Fire Protections Systems Layout, Nicet Level III Northern California Fire Protection Services Inc. 16840 Joleen Way Bldg. A Morgan Hill, CA 93037 P-(408) 776-1580 EXT.111 F-(408) 776-1590 [email protected] www.norcalfire.com <http://www.norcalfire.com/> CONFIDENTIALITY NOTICE: This message and any document accompanying it may contain confidential information belonging to the sender. The information is intended only for the use of individual or entity named above. If you are not the intended recipient, or the employee or agent responsible to deliver this message to the intended recipient, you are hereby notified that any disclosure, copying or taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this transmission in error, please immediately notify us by telephone to arrange for return of the documents. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
