When you load it to the revit project and place on any surface it cuts host element automatically.
Revit cut roof with void.
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 determine the length of the void ideally in 3d view at wireframe mode extend this in order to intersect the.
This family should be able to cut the floor when it is loaded into the project.
Revit will think that the structural framing is cut forever.
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An option would be to cut hole in the roof is to use roof voids the following way.
Load the family into the project and place it.
Workaround copy the original structural framing element.
To cut objects in a project using voids in the family.
Enable cut with void.
Cut with voids when loaded.
If you want to cut host element automatically at the moment of face based void placement you have to cut host element first.
Revit best class click modify tabgeometry panelcut drop down cut geometry and select the void you created cutouts maps make the material partially transpar.
Revit users should now develop a simple family that contains a void by using revit s family editor.
Open the revit family with unattached voids and click create tab properties panel family category and parameters.
Model in place won t work.
Place the void family and cut it with your framing family.
You don t even need to sign up.
But you can use cut tool and select host element then void and then you will have a cut there.
Just model a void extrusion e g.