There is nothing I have seen that says in-racks must have a dedicated riser, only that they must be separately controlled. I think that arrangement would be acceptable, but I would install a control valve on the feed to the in-racks. Take a look at the diagrams in 8.16.1.6 in the Handbook.
At 04:34 PM 5/21/2012, you wrote: >I am designing an In-rack sprinkler system in an industrial building that has >4 existing Automatic Sprinkler Systems that are wet and configured as a grid. >They are located directly under the collector grid main. Is there anything in >NFPA-13 that will not allow me to connect the in-rack supply from an adjoining >Sprinkler System. The in racks are double row racks and running parallel with >the grid lines, so when I calculate the ceiling sprinklers directly above the >racks and calculate the in racks sprinklers, I will be flowing from two >different risers, if so would I still need to balance the two? It is >economically advantageous not to connect at the base of the riser or to the >Supply main of the directly overhead system. > >Thank You, > >George Medina Jr. > > > > >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120521/cb6feae6/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
