I just mean above ground piping is steel and underground piping is ductile iron. For instance a manual standpipe system connected to a yard FDC would be ductile for the underground portion and steel for the above ground portion.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Thursday, April 19, 2007 5:04 PM To: [email protected] Subject: Re: Underground Dry Pipe Don't confuse the issue. 13 say's "Above Ground Pipe and Tube" not dry system pipe and tube or wet system pipe and tube, and like wise "Underground Piping" says "10.1.2 Steel piping shall not be used for general underground service, unless specifically listed for such service. (The use of steel pipe to an FDC is an exception to this rule, but does not apply to any other use of underground piping.) Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Ron Greenman" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, April 19, 2007 2:46 PM Subject: Re: Underground Dry Pipe > Bill, > > My reasoning here is that the fire service main and the FDC are both > delivery lines to the system or part of the underground piping which > would be covered on the UG materials and installation form and subject > to the rules of NFPA 24, whereas the described situation is a part of > the system covered by the aboveground materials and installation form > and subject to the rules of NFPA 13. Ductile is not in 13-6.3 (2002). > I suppose that if you consider that in this situation you revert to 24 > when you go back underground then D.I. would be acceptable. > > On 4/19/07, Bill Minkel <[EMAIL PROTECTED]> wrote: >> When an FDC line goes underground it becomes D.I., I would think a Dry >> System Main is no different. >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Ron >> Greenman >> Sent: Tuesday, April 17, 2007 7:08 PM >> To: [email protected] >> Subject: Re: Underground Dry Pipe >> >> My opinion would be you cannot use ductile since, even though this pipe >> is >> going to be underground, it is essentially a part of the aboveground >> system >> and a dry system at that so you are restricted to approved pipe types. Of >> course you don't want to directly bury steel pipe, galvanized or not, in >> direct earth contact. I'd take a note from the gas fitters that used a >> pre-wrapped or site-wrapped black steel pipe. There's a spec on how thick >> the plastic is (10 mil I think) but that can be found in the UPC. As to >> low >> point drain is your buried below the frost line you don't need to worry >> about the pipe down there although I'd drain it anyways since you'll need >> to >> drain the ends that are above that line. To do this I'd suggest a digging >> a >> small, lined dry well (maybe 6" by 24" deep) wherever you're planning a >> drain. Fill this with gravel. Bring a keyed valve (like the ones for lawn >> sprinklers) to the well and surround it with a road box. >> >> On 4/17/07, Margaret Zabel <[EMAIL PROTECTED]> wrote: >> > Re: my previous post about a dry standpipe installation, I believe >> > that the large pipe was all standard-type underground pipe: ductile >> > iron as I recall. The much smaller connection for the drain may have >> > been handled with some specially lined 2" pipe for the drain. There >> > is a company in southern California somewhere (Santa Fe Springs?) >> > which will cement-line steel pipe for you on a custom basis. I have >> > used their services on government-only jobs in the past where function >> > was more important than listing. This job I am referring to was for >> > the county in which the airport is located. Since we needed only >> > about 5' of small pipe, we may have done something else. I don't >> > remember. (Guess I'd make a good politician....) >> > >> > Margaret Zabel >> > >> > --- Roland Huggins <[EMAIL PROTECTED]> wrote: >> > >> > > the use of underground steel pipe is restricted, see 10.1.2. One >> > > can argue about whether it applies just to supply mains (since it >> > > came out of NFPA 24) since 8.16.4.2.4 addresses it. >> > > Transitioning WITHIN >> > > a sprinkler system (ie after the system riser), has never been well >> > > defined. Skate on out there on that thin (unknown) ice. >> > > >> > > Roland >> > > >> > > On Apr 17, 2007, at 2:05 PM, Reed Roisum wrote: >> > > >> > > > I've got a outdoor amphitheatre that needs >> > > sprinkler protection. The >> > > > only option allowed to get from the controls >> > > (adjacent heated >> > > > building) >> > > > to the arch on the amphitheatre is to go >> > > underground. We will be >> > > > using >> > > > galvanized pipe for the dry system for the >> > > amphitheatre. >> > > > >> > > > The question is what pipe should I spec for the >> > > dry underground? Can >> > > > (should) I use galvanized? Do you sleeve it? Any >> > > other suggestions? >> > > > >> > > > Thanks, >> > > > >> > > > >> > > > Reed Roisum >> > > > Fire Protection Technician >> > > > >> > > > Ulteig Engineers, Inc. >> > > > 3350 38th Avenue South >> > > > Fargo, ND 58104-7079 >> > > > _______________________________________________ >> > > > Sprinklerforum mailing list >> > > > [email protected] >> > > > >> > > >> > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> > > > >> > > > To Unsubscribe, send an email to:Sprinklerforum- >> > > > [EMAIL PROTECTED] (Put the word unsubscribe in the subject >> > > > field) >> > > > >> > > >> > > _______________________________________________ >> > > Sprinklerforum mailing list >> > > [email protected] >> > > >> > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> > > >> > > To Unsubscribe, send an email >> > > to:[EMAIL PROTECTED] >> > > (Put the word unsubscribe in the subject field) >> > > >> > >> > _______________________________________________ >> > Sprinklerforum mailing list >> > [email protected] >> > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> > >> > To Unsubscribe, send an email >> > to:[EMAIL PROTECTED] >> > (Put the word unsubscribe in the subject field) >> > >> >> >> -- >> Ron Greenman >> at home.... >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> To Unsubscribe, send an email to:[EMAIL PROTECTED] >> (Put the word unsubscribe in the subject field) >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> To Unsubscribe, send an email to:[EMAIL PROTECTED] >> (Put the word unsubscribe in the subject field) >> > > > -- > Ron Greenman > at home.... > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
