We have doubts regarding criteria for protection of the following: Class III, solid pile Storage height: up to 20 ft Máximum building height 30 ft NFPA 13 2010 Edition
As we understand, the code gives two options which are: 1) Per 14.2.4, Control Mode Density Area:Figure 14.2.4.2 With ordinary temperature, K=11,2 sprinkler we need 0,215 gpm/sq ft over 2000 sq ft. Flow rate equals 430 gpm 2) If we go to 14.3, Control Mode Specific Application, Table 14.3.1, for same conditions, we are required to have 15 sprinklers with K= 11,2 operating with a minimum discharge pressure of 25 psi. Flow rate equals 840 gpm and density is 0,43 gpm/sq.ft. Are both cases valid for the hazard we are protecting? Why such a large difference in terms of flow and density? Best regards and thanks in advance J.P. Merlino _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
