What is the overlap measurement for patches?

The overlap measurement for patches is correctly identified as 13mm. This measurement is crucial in ensuring that the patch adheres properly to the surface of the dry van and provides sufficient coverage to prevent any potential leaks or weaknesses. The 13mm overlap ensures that the edges of the patch are securely bonded to the surrounding material, offering enhanced durability and protection against environmental factors.

In practice, having the right overlap measurement contributes significantly to the structural integrity of the dry van. It minimizes risks of failure due to stress or wear, which could occur if the patch does not have enough overlap. The other measurements, while they may seem plausible, do not adhere to the standard practices established for ensuring effective repairs on dry van patches. Using a measurement outside of 13mm could compromise the effectiveness of the patch, leading to potential issues down the line.