Autodesk Robot Structural Analysis

[#1]

I have a steel frame (large0 building with composite flooring. I want the frame to carry the load for the slab but dont want to mesh the slad its self as this take a very very long time. Is there a way I can keep the slab insitu and ROBOT to allow for its self weight yet remove the mesh as I am not interested in the slab itself?

Can I simply "ignore" in the analyze option?

Many Thanks

[#2]

Try to set the calculation model as Curtain wall.

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