Which of the following statements best describes a butt joint?

A butt joint is best described as a joint formed at the edge of two adjoining plates. In this configuration, the edges of the plates are aligned and typically joined together along a single plane, which allows for a strong connection when welded or bolted. This type of joint is commonly used in metalworking and construction, especially when the plates are of similar thickness.

The other descriptions do not precisely encapsulate what constitutes a butt joint. For instance, an overlap of two parts signifies a lap joint, which is distinctly different from a butt joint. While welding two plates together can create a butt joint, this description lacks the specificity regarding the edges that defines a butt joint. Furthermore, using rivets pertains to another joining technique, known as a riveted joint, which is not representative of a butt joint. These distinctions clarify why the correct characterization is centered on the edges of the adjoining plates.