How many interlocks you got?
Matt
-----Original Message-----
From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf
Of Jim Jordan via Sprinklerforum
Sent: Tuesday, January 25, 2022 10:21 AM
To: sprinklerforum@lists.firesprinkler.org
Cc: Jim Jordan <jim.jor...@dunkfire.com>
Subject: Pre-Action Calculations
Maybe I have been doing it wrong for the last 15 years, but twice
in the last year I've been instructed once by an FPE and once by an AHJ to
calculate a pre-action system as a wet system vs. using the area increase for a
dry system, and the most recent engineered drawing I've received for a project
has the pre-action ran as a grid system. Am I mistaken in my perception that
these systems should be treated and calculated as dry systems?
Thanks,
Jim
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