What is critical about the overlap measurement while patching?

The importance of overlap measurement while patching primarily revolves around ensuring adequate bond strength. When patches are applied to a dry van, the overlap between the patch and the existing material creates a bond that must be strong enough to withstand forces such as tension, shearing, and flexing that may occur during transportation and handling. Proper overlap helps in distributing stress evenly and reduces the likelihood of failure at the seams.

This bond strength is critical to the integrity of the repair, as weak bonding could lead to the patch lifting or detaching, compromising the structure and functionality of the container. In this context, measuring the correct overlap is essential for achieving a durable and reliable repair that meets industry standards for safety and performance.

The other options relate to aspects of aesthetics, material efficiency, and operational considerations, but they do not address the fundamental necessity of bond strength that ensures the longevity and functionality of the patch.