Editing Curved Roof Planes

Classroom Design Project Training Video: Drawing and Connecting Roof Planes

Curved roof planes can be joined with flat roof planes and other curved roof planes using the Join Roof Planes edit button.

Often it is not necessary to join curved roof planes if the underlying normal planes were already joined. A simple four wall rectangular house is a good example. On a default hip roof, all flat roof planes are correctly joined at hip ridges. Group select all four planes and curve them by the same amount. Since the distance from the eave to the ridge and the pitch is the same for all planes, the newly curved planes still join to each other in 3D.

If one of the planes is curved differently from the others or is flat, it no longer joins with the other planes in 3D, although it may display to in floor plan view. This can be easily seen if one of the four roof planes remains flat.

To join curved and flat roof planes

This is called the curved join edge for each roof plane. Notice that a flat roof plane can have a curved join edge if it is joined to a curved roof plane.

Curved Join Edges

A roof plane with one or more curved join edges is less editable than one without them. The curved edges and corners adjacent to them can be selected, but not moved. If you move an edge adjacent to a curved join edge, the curved join edge extends or contracts appropriately to maintain the corner.

Before curving roof planes or joining the edges of any curved plane, make sure all flat roof planes are joined as well as possible. After this you can curve the roof planes and then make any curved join edges.

The Join Roof Planes tool can be used to update curved join edges that have been changed in some way.

To remove a curved join edge