Which parts plumb the framework and braces framework?

• A. End wall parts
• B. Brace rods
• C. Sag rods
• D. Holden column

Answer: (A)

Maintaining vertical alignment during frame erection relies on a stable reference boundary that establishes a true end plane for the structure. End wall parts set and hold that plumb reference at the ends of the frame, giving something solid to align with as you assemble the rest of the framework. When the end walls are plumb, the braces framework can be attached and kept true, because the entire system has a reliable vertical reference.

Brace rods and sag rods are part of the bracing system that resists lateral movement and keeps members from shifting once the frame is up, but they don’t establish the initial vertical alignment themselves. Holden columns are temporary supports used during erection, not the primary plumb reference for the framework.