hokie66 and azcats - Thanks for your replies. Designing as a beam and providing a bond breaker between the concrete and steel is a very logical approach. Since these concrete elements will be highly visible, I'm thinking I'll design it as a beam with skin reinforcement and include closed...
I'd like to get someone else's opinion on this topic. I'm currently looking at detailing a concrete column encasing a steel column supporting roof load. The wrap is about 3'-8" square only extending above the curtain wall so it terminates below the roof elevation. I can design it per ACI 318...
