Select the object to be cut.
How to cut into a roof on revit.
Add vertical or by face opening this is part of the revit pure basics package.
An option would be to cut hole in the roof is to use roof voids the following way.
Use one of the opening tools to cut a vertical or perpendicular opening in a roof floor or ceiling for example to accommodate a chimney.
Architecture tab opening panel.
Structure tab opening panel.
Autodesk revit structure 2014 hope you enjoyed this lesson on creating roof openings.
Determine the length of the void ideally in 3d view at wireframe mode extend this in order to intersect the roof surface that will be cut.
Create the walls and roof elements that make up the dormer.
Click modify tab geometry panel cut drop down cut geometry.
After adding a dormer cut an opening for it through the roof.
Click by face or vertical.
Load the family into the project and place it.
You can cut openings in the faces of these elements or you can select the entire element to make a vertical cut.
Create an in place family roof at choosing void extrusion.
Ideally in a section view draw the contourline of the void using the pick line option on the base of the inside edge of the roof.
You can cut openings in the faces of these elements or you can select the entire element to make a vertical cut.
Click by face or vertical.
In the family category and parameters dialog select cut with voids when loaded and click ok.
Use one of the opening tools to cut a vertical or perpendicular opening in a roof floor or ceiling for example to accommodate a chimney.
Check out the full thing.