What is a key feature of a common weld?

A key feature of a common weld is that it typically involves a single weld joining together two adjacent inserts on one side. This method ensures a strong and reliable connection between the materials being joined, which is essential in structural applications and other industrial settings. This characteristic allows for effective load distribution and integrity in the welded joint, making it a standard practice in various fabrication processes.

In contrast, the other options describe scenarios or functions that are not representative of a common weld. For instance, the notion of multiple beads for temporary joins refers more to welding techniques used in specific applications rather than defining the fundamental nature of a weld. Similarly, welding for decorative purposes is less about structural integrity and more about aesthetics, which does not align with the primary purpose of most common welds. Lastly, the mention of defects in wooden structures is unrelated to welding altogether, as it pertains to issues within a different material domain. Understanding the specific function and application of common welds helps clarify why option B best captures a key feature.