In the Handbook commentary, it states "It is possible for a combination of design methods to be used in a single building". I perceive the purpose of this section is to make it the designer's discretion on which approach to use, so an authority cannot mandate something different after the fact (unless specifically included as part of a job specification). I think you are good mixing it up.
At 06:59 AM 12/7/2011, you wrote: >Reading the following from NFPA 13 2010 ed. Does this mean the room design >method cannot be used in an area if we already used the density/area method in >another area? We have a residence with a mechanical penthouse using the >density/area method but the floors below are all residential units separated >by block walls. Are we be allowed to use room design method for that? > > >11.2.3.1.1 The water supply for sprinklers shall be determined >*only from one* of the following, at the discretion of the >designer: >(1) Density/area curves of Figure 11.2.3.1.1 in accordance >with the density/area method of 11.2.3.2 >(2) The room that creates the greatest demand in accordance >with the room design method of 11.2.3.3 >(3) Special design areas in accordance with 11.2.3.4 >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20111207/55489866/attachment.html> >_______________________________________________ >Sprinklerforum mailing list >[email protected] >http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
