What do you do when the water supply is adequate in pressure and flow but
has corrosive elements other than MIC? Who is responsible for the quality
of the water supply?
*
*
*Thanks*
*
*
*Rahe Loftin, PE *
*Fire Protection Engineer (AHJ)*
*General Services Administration*
*Region 7 - TX, OK, NM, A
bile Telephone Number: 301-343-1457
> FIRE SPRINKLERS SAVE LIVES - Can you live without them?
>
>
> -Original Message-
> From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:
> sprinklerforum-boun...@lists.firesprinkler.org ] On Behalf
> Of Rahe Loftin - 7PCE
>
Ken,
You might mention that if one is trying to support a 6 inch pipe, requiring
1/2 inch all thread rod with a trapeze using 3/8 inch all thread rod, as
the 6 inch pipe is moved from the middle of the span, one of the 3/8 ATRs
will begin to be supporting more of the 6 inch pipe load. At some poin
elephone Number: 301-474-1136
> Mobile Telephone Number: 301-343-1457
> FIRE SPRINKLERS SAVE LIVES - Can you live without them?
>
>
> -Original Message-
> From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:
> sprinklerforum-boun...@lists.firesprinkler.org] On Be
Brian,
Please look at the NFPA 13, 2013 Edition excerpt below. The things to note
is that the depth of the ceiling material does not exceed the least
dimension of the opening. Some will interpret this section that it only
applies to egg crate ceiling designs, Look at the Annex note following the
Be very careful using "Unistrut" for trapeze members. The same section
modulus is used for the solid, slotted, perforated, etc models. However,
only the solid is in strict conformance with NFPA 13. Even though the
slotted/perforated units have the same section modulus, they have different
deflec
Great job Cecil. Beautiful illustrations. Sure takes me back several
years.
Now the NFPA 13 Handbook is really providing some meat for its readers.
*Thanks*
*
*
*Rahe Loftin, PE *
*Fire Protection Engineer (AHJ)*
*General Services Administration*
*Region 7 - TX, OK, NM, AR, LA*
*Design & Constr
Ken,
Totally agree, however when there is a structural restriction such as this,
the practical solution is to provide more hangers with spacing reduced from
the maximums listed in NFPA 13. This is a structural solution not a
financial solution. There are structures that do have limits such as thi
The only way to avoid this issue is to lower the walls. I, personally,
don't agree with the 18 inch rule as it allows a sprinkler to be anywhere
as long as the vertical obstruction is 18 inches or greater below the
deflector. Even though the 18 inch clearance will allow the pattern to
develop, th
George,
You are correct. Logic and Government are incompatible. I fight it daily.
Rahe Loftin, PE
Fire Protection Engineer (AHJ)
General Services Administration
Design & Construction 7PCE
817-371-3102
On Mon, Oct 24, 2011 at 12:07 PM, George Church wrote:
> Not that it would be any justific
Here is another question for the forum. Is a jockey pump that is used, with
a fire pump, for aboveground sprinkler systems acceptable to be used for a
large fire pump fed underground system that supplies hydrants and buildings?
It would seem that there would be more leakage underground and a 10-1
00
> > Subject: Re: Manufacturer's Fittings
> > From: rongreen...@gmail.com
> > To: sprinklerforum@firesprinkler.org
> >
> > Why not? It's more exact than generic average in the prescriptive
> document.
> > But is the difference, even across all the
I would like an opinion as to the use of the equivalent feet of pipe in NFPA
13 versus the equivalent length of pipe provided by a manufacturer for
fittings. For example, is it in accordance with NFPA 13 to use the
manufacturer's equivalent feet of pipe for a roll grooved elbow fitting
instead of
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