Hi, how should i classify the force-resisting system for a building having steel columns and composite beams (Steel Deck) acting as a moment frame (no braces)? im talking of table 12.2-1 of ASCE/SEI 7-10. I'm trying to keep it as simple as i can so i'll try to use an R=3 system. Should it be considered as an "Ordinary steel moment frame" or as a "steel and concrete composite ordinary moment frame"? The thing is seismic design category is C and "steel and concrete composite ordinary moment frame" are not permited, NP, for this category but it is permited, NL, for ordinary steel moment frames.
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