Which of the following is a reason to repair all corner posts, including j-bars?

Repairing corner posts, including j-bars, is essential primarily due to the structural integrity they provide to container units. A broken component or weld represents a significant issue that can compromise the container's strength and safety. In containers, corner posts and j-bars are critical elements that help maintain the overall structure and ensure the container can withstand various stresses during transport and stacking.

When a corner post or j-bar is broken, it can lead to further damage, potentially affecting other components of the container and posing risks during use. Addressing broken parts promptly through repairs not only restores functionality but also prevents potential accidents that could arise from a compromised structure.

Other issues such as visible rust or surface painting may indicate maintenance needs but do not directly threaten the structural performance of the container in the same way as broken components do. Similarly, minor dents or dings can be aesthetic or cosmetic concerns but are not generally critical enough to necessitate immediate repairs compared to a broken corner post. Thus, the necessity for repair highlights the importance of maintaining the essential strength and integrity that these components provide in a container's overall design.