A locker room (1050 ft²) in apartment building is divided into small storage compartments. No shelves, no lifting devices. The ceiling height is 9’.
The sprinkler system design criteria was chosen as OH II, which is adequate for miscellaneous storage of Class IV Commodities up 12 feet in height as well as Plastic up to 5 feet.
Now the AHJ is requesting either design of plastic protection up 8 feet saying that some plastic may be stored - therefore we have to treat this as storage of mixed commodities - therefore it shall be protected by the requirements of highest classified commodity, or provide assurance that no plastic will be stored.
Will “mixed commodities” be applicable for miscellaneous storage? Or do we not have any grounds for argument?
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