i know how systems work i design them for a living i was just didnt know the fire code of nevada, my company has done all the casinos in this area as of late and we have never put a storage tank of water on the roof for fire. I was just wondering if its the lack of potable water in that area that they need a tank for it or jsut different state codes. it really doesnt make sense for dry systems to be there unless that is all state code requires, it water that big of a factor in that area??
most systems in this area are wet systems or atleast upgraded to wet fully automatic systems