In the typical erection sequence for a standard steel frame, which element is installed immediately after placing bracing?

• A. Columns
• B. Floor beams
• C. Girders and secondary elements
• D. Complete connections

Answer: (C)

A key idea here is that temporary bracing is used to lock the frame in position so the heavier, longer members can be added safely and accurately. Once the frame is braced, the next logical step is to install the girders and other secondary elements. Girders serve as the main horizontal supports that carry loads between columns, and adding these early provides a stable backbone for the rest of the frame. With the girders and secondary elements in place, the structure has a solid reference for installing other components such as floor beams and decking, and it also sets up proper fit and alignment for final connections. Complete connections are left for after all members are in place to ensure all joints can be properly fitted and welded or bolted.