How are steel bearing plates over 2 inches but not over 4 inches in thickness permitted to be straightened?

Steel bearing plates that are over 2 inches but not over 4 inches in thickness may be permitted to be straightened by pressing. This method is particularly effective because it applies a uniform force throughout the material, helping to restore the material to a flat shape without introducing additional stresses or defects.

Pressing is preferred in this situation as it minimizes the risk of damaging the plate or altering its mechanical properties. The technique ensures that the resulting shape is consistent and meets the required specifications for structural performance. It also helps prevent the potential for localized heating or distortion that can occur with other methods, such as hammering or heating. Consequently, using pressing is aligned with best practices in structural steel work, particularly for plates of significant thickness where careful handling is critical to maintain integrity.

In contrast, methods like hammering or heating might not be suitable for thicker plates as they could lead to uneven stress distributions or thermal distortions. Welding, while a common technique in steel construction, is not intended for straightening purposes and could compromise the structural integrity of the plate if used improperly in this context. Therefore, pressing stands out as the method that provides reliable results for straightening steel bearing plates within the specified thickness range.