In a roof framing picture, what component is typically indicated by an arrow?

In roof framing, a purlin is a horizontal structural element that supports the roof deck and is typically located between the rafters. It is essential for distributing the weight and providing lateral support to the roof structure. In a framing diagram, if an arrow is indicating a component, it is common for this to represent a purlin, especially if the image shows horizontal members running parallel to the ridge or the eaves.

In contrast, rafters are usually at an angle and are typically depicted in a way that shows their sloped position, making them less likely to be indicated with a simple arrow in a diagram emphasizing horizontal components. The ridge board, situated at the peak of the roof where rafters connect, is generally recognized as a framing component distinct from the horizontal support of a purlin. Lastly, a strongback is a structural support element used to provide rigidity to the rafters but is less often the main focus of representation in these types of diagrams compared to purlins. Understanding these distinctions clarifies why the purlin is a more appropriate answer in this context.