If a system is installed that is an exact duplicate of an existing
system, which it is to replace, is that considered a new system under
the Code or a "repair" of a system under 25? Where is the cut-off
between the two? How would any of the AHJ's out there address this?
Now George, supposed your building has 12ft storage of expanded
plastics or flammable liquid storage? Most likely the pipe schedule
system is not going to be able to protect those occupancies. Would
you swap the system old for new as it was installed? How would the
attorney for the plaintiff react to that?
I didn't even bring up the issues about 3/4", 3-1/2" and 5" pipe.
At 12:33 PM 1/12/2011, you wrote:
So you run new UG into a building that was legally pipe schedule
because the calc (that wasn't required under the valid but old
design criteria) doesn't work? It doesn't have to, its designed to
the applicable code at installation.
George Church'
Rowe Sprinkler
[email protected]
570-837-7647
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Todd Williams
Sent: Wednesday, January 12, 2011 12:20 PM
To: [email protected]
Subject: Re: Hydraulic Calcs
Ok, so in Doug's situation, it constitutes a new installation and
not repair work (based on your first statement) and it is based on a
prior design. However, as a new installation wouldn't the design
need to meet current Codes irregardless of when the design was done
and probably require hydraulic calculations?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860.535.2080
www.fpdc.com
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