Creating Ridge Flashings – It is becoming more common for drawings to require the ridge and hip flashings to be shown on the building. The reason for this is that regulatory authorities often want to ensure that these flashings are shown to avoid the builder accidentally leaving them out. If you create the flashings as 3D objects that are on the roof, then they will show up in all perspectives, elevations, and sections.
Vectorworks does not have a tool that will automatically create your ridge and hip flashings. They will have to be created using three-dimensional techniques.