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Revit deldting roof.
You need to create the bay window roof separately.
This is the easiest way to do it.
This tool is located in the modify tab.
Then follow these 2 steps.
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Press delete or right click the element and select delete.
Click modify floors tabshape editing panelmodify sub elements.
I believe this tools are not design for this purpose.
How to model a dutch gable roof in revit.
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Whether you want a double gable roof with 6 pyramid shaped dormers or a simple gambrel roof the basics remain the same.
When you delete the shape edit element the floor adjusts its geometry accordingly.
Click on the shape edit element to select it.
Using shape editing tools.
To create a dormer model required walls and additional roof.
How to demolish part of a roof in revit.
See hd version of video tutorial here.
To delete shape edit elements select the modified floor.
9 join roofs add opening to create dormer.
Get these project files and all advanced 1h courses.
Https youtu be noznjnfia2u walls in revit.
For creating complex roof it might be easier if you create separate roof then use join roof tool to join them later.
Revit roof slope can seem complicated at first glance but by learning a few critical features you can create any roof shape you desire.
Use join unjoin roof tool.
The one thing to note when modelling a dutch gable roof in revit is to create an internal set of boundary lines to match the size of the higher level gable that will be above.