Reza,
Thanks for the info
Brian Harris
FDFP INC.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Reza Esmaeili
Sent: Wednesday, November 14, 2007 12:55 AM
To: sprinklerforum@firesprinkler.org
Subject: Re: FW: Maximum Velocity
Brian,
If you are
I too recall something about this. If my memory serves me right, several
years ago it was on this forum and Roland had some input on this subject.
Ron
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Bill Minkel
Sent: Tuesday, November 13, 2007 5:26 PM
THANKS FOR THE HELP.
Dennis Briggs, Jr. br
Miller Fire Protection Inc. br
2750 Marble Ct. br
Forestville MD. 20747 br
Office - (301) 736-3000 br
Cell - (240) 304-8967
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, November 13, 2007 09:06 PM
To:
Does anyone have any experience with rack storage of polyester fabric on
paper rolls?
- double row racks,
- solid shelving,
- 3 levels of storage (2 solid shelves) not greater than 60 apart
vertical,
- 3 transverse flues at the rack uprights,
-
Funny that this is an active thread again. Just got a spec' for an Army
Housing project. They call for a design in accordance with NFPA 13R,
and rack sprinklers per NFPA 230 with a maximum velocity of 20 FPS.
The real question here is where can I find out the country of origin of
the dope the
If this is a US Government job, it probably has to be from a domestic
supplier..
At 04:07 PM 11/14/2007, you wrote:
Funny that this is an active thread again. Just got a spec' for an Army
Housing project. They call for a design in accordance with NFPA 13R,
and rack sprinklers per NFPA
also look at 13: A.22.4.1 (last sentence) It is not necessary to
restrict the water velocity when determining friction loss using the
Hazen-Williams formula.
This is also in the 02 edition.
Roland
On Nov 12, 2007, at 6:41 AM, Brian Harris wrote:
What's the general rule of thumb for
I guess being old and having been around for a long time. The 32 ft per
sec came from some old water distribution engineering manuals and became
sort of a rule of thumb for sprinkler calculations in that when you get
above that velocity the friction loss gets larger in a hurry. At one
time FM
Steve-
Look at the bright sideI had a project where the feds asked for a max
velocity of 18.6 fps. When I asked about itI was told it had something
to do with laminar flow. 100% pure District of Columbia pipe Dope.
Paul
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL
Mike
Memory says FM lifted that speed limit a few years back, and before then it
only applied to pipes 2 in and smaller.
Any FM people in the Forum to comment? Joe?
Jack C Kilavuz
Mike Brown
Mike,
We use the Potter VSR-F flow switches for main and sectional control. I am
sure you are aware that there is a max. design water flow velocity (surge)
limit (18 FPS) allowed going through the water flow indicator switch per
UL/FM listing/approval.
Peter Nadhazy
- Original Message
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