Which weld joint configuration is used when two pieces of metal are aligned side by side?

The correct answer is the flare-groove joint configuration. This type of joint is specifically designed for applications where two pieces of metal are positioned with aligned edges facing each other, but typically in a way that allows for a groove to facilitate welding. The flare-groove joint, which can be used to join tube-like structures, requires precise alignment to ensure that the welding process properly penetrates and fuses the two pieces effectively.

In contrast, while a butt joint and an edge joint also involve two pieces of metal, they are configured differently. A butt joint typically involves two pieces being aligned end to end, while an edge joint is used to connect the edges of two parallel pieces. The corner joint connects two pieces at a perpendicular angle, which does not apply to the scenario where the metal pieces are aligned side by side.

Understanding the specific configurations and their applications is crucial in welding print reading and execution, as choosing the wrong joint type can lead to structural weaknesses.