The demand calc for this system may have a safety factor. It might be worth doing a supply calc to see what the actual flow/pressure/density would be with all the design area heads open. It could be that the actual density is high enough (though not likely with an original OH2 design), depending on how good the supply is. From a customer service standpoint, you could show the owner that at least you are looking at all options. Just my thoughts, J. Scott Mitchell, P.E.
Todd Williams <[EMAIL PROTECTED]> wrote: I am working on a project where the owner is going to store a Class 3 commodity in cardboard boxes and a Group A Plastic in cardboard boxes. These are to be stored on pallets in racks. Based on the available density, the Class 3 can be stored to 12 feet and the plastic to 5 ft. The owner wants to store the plastic on the first level and the Class 3 on the second level, immediately over the plastic. His argument is that it meets both criteria, but I am suspect that the total fire load of a class 3 on top of plastic might be greater than the system (currently designed for OH2) can handle. However, I don't see anything that backs me up. I want him to dedicate separate racks for each. Any thoughts? Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut 860.535.2080 www.fpdc.com __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
