Most common roof types can be created easily using the Options on the Roof tab of the Wall Specification dialog.
By default a roof plane is generated over each exterior wall, creating a hip roof. Hip roofs can be applied equally to all walls without causing conflict. To define a wall with a hip roof, make sure all Options are unchecked.
A gable roof is produced if the two opposite walls, or roof plane baseline segments, are defined as Full Gable Wall in the Roof tab of the Wall Specification dialog.
The High Shed/Gable Wall is often interchangeable with Full Gable Wall, but should be used when raked walls are desired. If three adjacent walls are defined as High Shed/Gable wall, the building is modeled with a shed roof. The High Shed/Gable wall is the tall side.
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