Part 1 – Problem 12: Can we assume that non-structural elements can close in the story to calculate the floor area (i.e curtain wall)? If so, can these elements extend past the tapered building shape as the figure shows in the structural design guide of the existing and addition (i.e building elevation – south)?

Non-structural elements such as curtain walls are permitted to extend past the required footprint of the building. The plan dimensions specified in the design guide and
drawings are for the purposes of constructing your numerical model. Any architectural features may extend outside of these bounds. However, please keep non-structural elements within reason (if they extend far outside of the structural bounds, then they would likely require additional structure outside of the structural bounds).