Crappy water.... you know it when you see it. And I just found some.

At 08:48 PM 9/9/2009, you wrote:
>Tony,
>
>As is so often the case on the Forum, crappy water is a technical
>term. In this case though it has different meanings depending on the
>industry. For instance crappy water to the water connoisseur means a
>water with poor taste, whereas to the water purveyor it means any
>water on a system beyond an arbitrary point that he might be called on
>the carpet for if he allows it back into his system. To him both light
>water and heavy water is crappy water. You can guess what it means to
>a plumber. In typical sprinkler guy (another technical term) talk
>crappy water on the West Coast means water supplied with low quality
>relative to pressure and/or flow. I haven't a clue what it means to
>George.
>
>On Wed, Sep 9, 2009 at 4:24 PM, A.P.Silva<[email protected]> wrote:
> > Not sure if I understand.
> >
> > Dry system, black pipe C=100, galvanized pipe C=120
> >
> > C=120 is less friction loss. Are you trying to say, "crappy water c=100
> > instead of c=120...." ?
> >
> > Next question, what is "crappy water"?
> >
> > Tony
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of 
> George Church
> > Sent: September 9, 2009 10:05 AM
> > To: [email protected]
> > Subject: RE: Galvanized Pipe
> >
> > Reqmnts for calcs are independent of the type of pipe.
> > If you have crappy water, galv gives you c=120 instead of c=100- so do you
> > want 25% increase in pipe fro line size increase, or 25% increase to stay
> > size and install galv?
> >
> > XL is galv outside, not internally galvanized.
> > It is an assurance that service work will continue into the next 
> generation.
> >
> > glc
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]] On Behalf Of Eladio N.
> > Alvarado
> > Sent: Wednesday, September 09, 2009 9:53 AM
> > To: [email protected]
> > Subject: RE: Galvanized Pipe
> >
> > Then, There is no mandate to use galvanized pipe on "Dry" or pre-action
> > systems. Pre-action systems are considered "Dry". Only when galvanized pipe
> > is used there are requirements for calculations, etc. I'm so much smarter
> > than I was just and hour or so ago.
> >
> > Thank you all, very much.
> >
> > Eladio Alvarado
> > AFSDII
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]]on Behalf Of Chris Cahill
> > Sent: Wednesday, September 09, 2009 9:41 AM
> > To: [email protected]
> > Subject: RE: Galvanized Pipe
> >
> > Practically speaking there is nothing galvanized about XL.  If any entity,
> > FM, NFPA, PE, owner, large drop heads required galvanized pipe XL wouldn't
> > qualify.
> >
> > 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 Eladio N.
> > Alvarado
> > Sent: Wednesday, September 09, 2009 8:26 AM
> > To: [email protected]
> > Subject: RE: Galvanized Pipe
> >
> > Todd, I do recall that FM at one point required it, but I though 
> that it had
> > been incorporated to NFPA in subsequent revisions? Wasn't that the reason
> > for the thread able light wall pipe "XL"? If you would, please elaborate.
> >
> >
> > Eladio Alvarado
> > AFSDII
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]]on Behalf Of Todd Williams
> > Sent: Wednesday, September 09, 2009 9:15 AM
> > To: [email protected]
> > Subject: Re: Galvanized Pipe
> >
> > It's not required by any specific standard, but is required by several
> > insurance companies
> >
> >
> > At 09:04 AM 9/9/2009, you wrote:
> >>Would someone be good enough to direct me to the specific location
> >>where Galvanized pipe is required by 13 for Dry systems? And where it
> >>may be indicated that Pre-action systems are considered "Dry". I've
> >>been trying to find it on the On-line codes but I seem to be having
> >>trouble dealing with their search engine. Any help would be greatly
> > appreciated.
> >>
> >>
> >>Eladio Alvarado
> >>AFSDII
> >>
> >>
> >>
> >>
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> >
> > Todd G. Williams, PE
> > Fire Protection Design/Consulting
> > Stonington, Connecticut
> > www.fpdc.com
> > 860.535.2080
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>
>--
>Ron Greenman
>Instructor
>Fire Protection Engineering
>Bates Technical College
>Tacoma, WA
>
>Member:
>SFPE, ASCET, NFPA, AFSA, NFSA AFAA, WSAFM
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080  
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