I just sent this privately... and realize that I should say it
publicly because my original request
didn't present my real problem....
My problem is this:
I have a job that must be installed last week.
I have a 140 psi water supply with good residual as evidenced by 120
psi on a full open 2" drain.
I have the last municiple flow test about ten years old that confirms
that good water supply.
The city will do a new flow test "asap".
The plan reviewer said that I'm being too "thorough" in doing calcs
on this .20 retrofit, that I should just
use the 'stuff on the riser'. Since my system's demand will remain
constant, I was looking for a way to 'bridge"
the flow data that I do have with 'the stuff on the riser'.
I have a copy of compiled drain tests that was used by a company
called Starr Technical Risks Agency
in the US and Canada but it only goes to 55 psi. I though maybe
someone have something with higher pressures.
I wouldn't ever rely on a 2" flow unless that was all that was
available - and the demand would have to be well below
the supply curve with a written understanding.
I hope this makes more sense to you.
Vince
At 11:15 AM 10/12/2009, you wrote:
>Haven't had the error, but we've done flow tests on 2" drains.
>
>Since the length of piping and # of fittings can vary on each main drain,
>the discharge for each pressure point is VARIABLE.
>
>However, what we've done to quickly get a flow test when we have a small
>demand is to place a hose monster on the main drain discharge and MEASURE
>the flow. Quick, easy, and accurate- no water co impact like 10 PM flow
>tests and $500, since essentially we're performing a 2" main drain test
>which doesn't require payment, water co crew, etc.
>
>But, No, I don't think you can say we have 100 PSI supply, reduced to 75
>with the 2" drain, that means you're flowing x GPM.
>
>Going back to the server issue, it may be an increase in use with the IRC
>hearing coming up, or convention-related high usage of attempted access. To
>top it off, Roger is likely flying out to SD today to help set up their
>infrastructure.
>
>Godspeed, AFSA staff and others heading west- see ya there!
>
>glc
>
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of Vince Sabolik
>Sent: Monday, October 12, 2009 11:02 AM
>To: [email protected]
>Subject:
>
>
>
>Good morning, folks --
>
>I keep getting this error when I try to sign in and access member stuff:
>Error Occurred While Processing Request
>
>Is this a server problem ...
>
>AND
>
>Does anyone have reference tables for discharge flow vs psi on
>a 2" main drain test?
>
>
>thanks,
>Vince
>
>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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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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