Looking for 1-Hr Fire+50STC rating assembly 3

[Rick90210]

My usual source (Gypsum Association Fire Resistance Manual)doesn't have a good "fit" as I am working with an existing kitchen floor that we can't carpet to get a 50 STC. Pouring a gypsum sub-floor (which works for a 50 STC) is impractical. Where can I check for alternate assemblies using soundboard or similar to meet the 50 STC and 1-Hr rating?

Thanks for the help.

 

[Ron]

Consider using a sound mitigation membrane...there are many on the market.

 

[dik]

See Attached...

 

[dik]

another...

 

[dik]

and another...

 

[RockEngineer]

This has lots of ideas and may be helpful

http://www.toolbase.org/PDF/CaseStudies/stc_icc_ratings.pdf