>One example is working with aged versus new pipe.
>There is no clear cut methodology to compensate
for the added roughage other than lowering the C-factor.
>Once you try to get below C=100 you are in no
man's land. I suggest that everyone reads the original works
>of H&W and see for themselves. It is free on
Google Books as the copyright has expired.
And there's no way of using another formula
unless you know the exact diameter that you're working
with, no? Kinda makes it tough to (re)calc existing systems!
The reason that HW was settled on (Clyde Wood
"Hydraulic Data for Fire Protection Systems") was because
it could be applied uniformly.
So if we're splitting hairs on minutia
calculations, it should be stated that back in the day (1800's or so),
the planet's hydraulic experts agreed to conduct
their joint experimentation on a mean temperature of 50°F - the
worldwide average a cave's temperature.
Based on that, how much 50° water is around in a fire? I feel inadequte!
Vince Sabolik
Christi Fire Protection, Inc.
11351 Pearl Road
Strongsville, Ohio 44136
T 440 572-7730 F 440 572-7719 Email:
<mailto:[email protected]>[email protected]
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