Hydraulic Placards - # Sprinklers in Design Area or Building

[2sBlind]

Hi All,

Quick question. I realize that NFPA 13 doesn't require the number of sprinklers on a new hydraulic placard, but a lot of templates have a spot for this information.

When applicable, would it be more useful/better to include the number of sprinklers in the design area or the total per the building? What are the pros/cons to each option?

Thanks!

 

[MatthewJWillis]

In the design area. The placard is all about hydraulics.

Things could shift that dictate more sprinklers in an area. Or less.

The placard is based on the old hand drawing days when we listed such things on the drawing.

R/
Matt

 

[MGXFP]

It is for the number of sprinklers in the remote area, hazard classification, flow and pressure demands. See Figure A.23.3.2(a) of NFPA 13 2013 edition.

I've never seen a placard with the total number of sprinklers in the system but it may have been customary when sprinkler system risers were limited to 400 sprinklers.