Look at the Table in NFPA 13, 16.2.3.1, you have limitations on the allowable height of the building when using ESFR. So you're not going to be able to go ESFR and no in-rack sprinklers with your situation.
You're pretty much stuck with ceiling sprinklers and in-rack sprinklers plus sprinklers below the grated platform levels. Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jose Saldivia Sent: Thursday, March 04, 2010 8:59 AM To: [email protected] Subject: RACK STORAGE, GRATED AISLES. I have a project that consist in a single rack storage system up to 16m (53ft) height, ceiling height about 23m (75ft) with possibilities of install a suspended ceiling in order to reduce the clearance up to 3m (10ft), the aisles are distributed one aisle for forklift transit and one aisle with catwalks (four levels every 3m (10 ft). The merchandise is commodity class IV. The sprinkler protection now consist in ceiling sprinklers plus 3 levels of rack sprinklers and two levels of sprinkles under catwalks (grates 70% open). We are looking for an especific aplication sprinker array that can reduce the quantities of materials using ceiling ESFR sprinklers and one level of racks sprinklers. Is this posible? Regards. José Saldivia Incisan Fire. _______________________________________________ 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) _______________________________________________ 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)
