The two-story building has a steel frame to have smaller elements, while the one story building has concrete structural elements. The main structural elements are a column/beam system with shear walls. The material for one building is steel, and the material for the other is concrete. Hopefully these different materials will allow the owners of the exhibition space more flexibility in their interior planning. The layout is fairly similar, with no changes in column sizes. The buildings are on a 30x24' grid system to ensure reasonable access to building materials (minimal oversized members).
The slight cantilever on the two-story building is a specific challenge for the future. I did not want to deviate from my gridlines, so I will need to figure out what to put in that small overhang without crowding structural members.
I am considering adding in more curtain walls to add extra light and space to the building. I also want to adjust the height of the lower building to bring in more light, possibly even remove some shear walls and replace with brace frames.