Thanks Damien, especially for your excellent summary of some of the differences between NFPA and the European Code. For the EC schedule with max 4 head line, using 32 ft/sec as the cut-off and 130 ft2 spacing I got an average density of 0.192 GPM/ft2. For the NFPA schedule, using 20 ft/sec as the cut-off and 130 ft2 spacing I got an average density of 0.200 GPM/ft2. So the next time I see a spec that limits the velocity I'll know that is from the old days- when the pipe size was the same whether the water supply was very poor or very good ;), and I will question everything else the specifier has to say!
Brad Casterline AFSA Designer Member _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
