Which weld type uses increments on one side alternated with respect to those on the other side?

The weld type that uses increments on one side alternated with respect to those on the other side is known as a staggered intermittent weld. This type of weld is characterized by having weld elements or increments that are not aligned directly opposite to each other, creating a staggered pattern. This design helps to distribute stress more evenly and can aid in controlling heat input during the welding process, which can be crucial for minimizing warping or distortion in the welded materials.

In contrast, a continuous weld would be a weld that runs uninterrupted along a joint, providing a consistent and full weld bead without the staggered pattern. A back weld typically refers to a weld made on the reverse side of a joint, primarily used to reinforce the front side weld. A fillet weld is a type of weld that joins two surfaces at a right angle but does not incorporate the staggered increments feature described in the question.

Understanding these definitions and how they relate to the geometry and application of different welds helps clarify the unique characteristics of the staggered intermittent weld.