The answer is to use a standard vectorworks roof and edit it to make just half the.
How to make a roof shape in vectorworks.
The roof angle must be between 0 and 85 to be changed by the reshape tool.
I client was asking how to make a roof that has a low point in the middle.
Using the create roof command you can generate a roof from existing walls or 2d shapes.
Some people call this a butterfly roof.
If the building has an attachment such as a garage that will have a different roof structure then select only the desired walls.
In this video tech tip we explain the different methods of working with the peaks and valleys of 3d wall objects.
Change the roof face angle using the reshape tool best in front or back view.
Connect roof faces as described in connecting roof faces.
Shift click to select multiple walls.
Move the roof face axis using the selection tool in top plan view.