Since it’s intended to ID the demand residual pressure of a particular design area, it would make sense to locate it at a gauge that can be easily read to corroborate the available and demand pressures, no? We usually pick a point about 3 feet off the floor, because it’s nearly always within 12-18” of the gauge.
Steve L. From: Sprinklerforum [mailto:[email protected]] On Behalf Of Ben Young Sent: Thursday, July 07, 2016 1:06 PM To: [email protected] Subject: Base of riser on placards What's the general consensus on the location of the 'base of riser' for hydraulic placards that everyone uses? See Figure A 24.5 in the 2010 Edition of 13 and/or 24.5.2 I feel its supposed to be at the base of each sprinkler riser (where you have multiple systems) where it ties into a common header. Others in my office think its where the incoming flange comes into the riser room. If you have a vertical riser with a vertical backflow, then these two points would be the same with either method in my line of thinking. Also, is the hose indicated on the placards supposed to be inside hose only, or combined in and out? I just realized after reading this today that it could only be referring to inside hose, but I've always put the combined hose there... Thanks, Benjamin Young
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