The wall between the offices and the storage area should go to the roof and be rated per the building code since the storage area represents 70% of the floor space unless it's less than 3,000 sf and is sprinkled. Depending on these situations and what is being stored it should be either a 2 or 3 hour barrier. The architect or GC should have this figured out already.
In either case if the space is completely inaccessible and is not capable of supporting storage, and doesn't contain any combustibles or equipment, I've never had an AHJ require sprinklers above the lay-in ceiling. If there is gas fired equipment or there is a platform or there are objects which are combustible (piping/duct insulation, wiring, plastic piping, etc) or it has some sort of access then yes, sprinkle it. I assume the offices will be sprinkled, right? Craig L. Prahl, CET Fire Protection Group 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.lg.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg McGahan Sent: Saturday, June 16, 2007 1:29 PM To: [email protected] Subject: warehouse offices I have seen this situation handled 3 ways and have my own opinion but would like to see what you all think. If you have an ordinary metal building warehouse with normal Ord Hazard Group II storage with an office area you often end up with space above the offices. In this case the offices will have lay in tile ceilings with insulation on top of the ceiling and no structure above the ceiling. Therefore there will never be storage on top of the offices. There is Approximately 14' of clear space above the offices of non combustible construction with no separation between the space above the offices and the warehouse. The offices represent approx. 30% of the total area of the building. Sprinklers will be installed under the ceiling of the offices. Do you protect above the offices completely? Do you protect 15' of the space from the warehouse side? Do you ignore it? Thanks, Greg Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 Fax: 850-937-1852 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
