In an erection sequence, what is the final step after installing interior and exterior elements?

• A. Completing connections with permanent bracing.
• B. Erecting columns.
• C. Installing floors/beams.
• D. Removing all temporary bracing.

Answer: (D)

Temporary bracing is used during erection to keep the frame stable while columns, beams, and connections are put in place. Once all interior and exterior elements are installed and the permanent connections/bracing are in place, the structure should be able to carry loads without the temporary supports. Removing all temporary bracing is the final step because it transfers all stability to the permanent structural system, ensuring the frame behaves as designed under service loads. The other steps—erecting columns, installing floors and beams, and completing permanent connections with bracing—occur earlier in the sequence to reach that stable condition.