New conceptual mass draw the section open and draw a line for the axis.
How to make a dome roof in revit.
In this video i show you how to model two types.
Get this revit file here.
For the simple curved dome use the revolve and axis line tools.
For both domes create an in place family by choosing component model in place and then choosing roofs in the family category dialog box.
Autodesk revit out of the box has an array of different primitive shapes including dome.
After placing the mass an elevation view is needed to adjust the shape of the dome to the desired roof dimensions being careful not to make the roof too steep.
Please like this video.
For glazed domes based on curtain walls only the second does.
This video shows how to create two types of domes as in place roofs in revit.
2 for glazed domes.