The problem is that you have the loop, then the hydrant, then the
lead-in to the sprinkler system, then the end of the main. No other
realistic way to do it.
At 10:36 AM 1/23/2009, you wrote:
I was taught that you had to flow past your gauge hydrant to get the
proper results so I would agree with the contractor. Your scenario is
like a dead end main with your gauge on the last hydrant if I am
interpreting it correctly.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Todd
Williams
Sent: Friday, January 23, 2009 9:30 AM
To: [email protected]
Subject: water test location
I did a flow test a couple of days ago on an underground main that had
recently been looped. There is a main that feeds a hydrant and
sprinklers to the building at the end of the loop. I flowed the hydrant
and read the pressures off the first test port on the backflow preventer
(before any checks) on the system riser. The contractor called me this
morning and said my test was not valid because I didn't use two
hydrants, like it says in NFPA. I think I am OK and the effective point
would be the connection of the main to the sprinkler system feed. Am I
right or am I missing yet another obscure ruling?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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