1-hour floor ceiling assembly (wood I-joists) w/min 45 IIC

I am looking for a 1-hour fire floor ceiling assembly (wood I-joists) w/min 45 IIC. I do not find anything that meets this w/out adding lightweight concrete to the flooring assembly. Have checked the GA manuals and the AWC documents, but no luck. Does anyone have any suggestions here? I am hoping to use an engineered wood floor as the finish above. This is for an accessory dwelling unit over a garage.

Thanks in advance,

Peter

Original Post

You may want to look at the document located on webjoist.com: http://www.webjoist.com/Other_...0Rated%20Systems.pdf This document has systems meeting your parameters on page 18.  There are also references to U.L. specs and specific methods from the Gypsum Association fire resistive manual.  Please consult with your local building department for prior approval of whichever method you choose.

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