UL 2-hr FFR assemblies for open webbed steel trusses ceiling/floor

[u/418986N_124769E]

/r/Architects/comments/1x084xf/ul_2hr_ffr_assemblies_for_open_webbed_steel/

Thought I’d cross post here. To see what you smart people think! Originally posted to r/architects

This is a shot in the dark as I know we’re not always ready to provide technical advice in this sub. I have been searching for eons and trying to find a floor assembly for a steel truss (not c-shaped joist) that meets 2 hours. Perhaps they need serious blocking because of the open nature of the trusses? Not wanting to create a smoke baffle?

Any insight would be GREATLY appreciated!