NFPA 13R Standard for the Installation of Sprinkler Systems in Residential Occupancies up to and Including Four Stories in Height, 2002 ed. http://pozhproekt.ru/nsis/nfpa/NFPA13R-2007.pdf, (Std: Instll of Sprnk Sys in Residential Occupn up to and Incl Four Stories in Height - Amer) {181 NFC}