NFPA 2007 DENSITY/AREA CURVES 1

[MaInspector]

Hello all,
I have a question about designing a full NFPA 13 Hydraulically calculated system using the density / area curves from figure 11.2.3.1.1 of the 2007 edition.
My question is when you have a large building (say 7,000 sq.ft.) with an Ordinary 2 occupancy classification, is it acceptable to design the system using the most remote 1,500 sq. ft. at .20 (gpm/ft2)Density or do you have to max out on the chart at 4,000 sq. ft. at .15 (gpm/ft2)Density?

 

[SprinklerDesigner2]

You can use any point on the curve regardless of building size.

If you had a 50,000 sq. ft. building you could use the 1,500 sq. ft. point on the curve.