Revit gives us three options.
Roof cut out revit.
Click modify tab geometry panel cut drop down cut geometry.
Cut an opening in a floor roof or ceiling.
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.
Sure enough the way a toposurface works is by defining a 2d z boundary surface and then whenever a boolean operation is applied on the toposurface everything z is considered to be cut.
Architecture tab opening panel.
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.
Open the revit family with unattached voids and click create tab properties panel family category and parameters.
Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter.
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.
Revit doesn t allow you to do cut out tunnels horizontal burrows or anything really into it s topography.
Use a tape measure to measure the entire width of your building.
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.
Structure tab opening panel.
Measure the width of your building.
Two additional options two cut plumb and two cut square require us to also input the fascia depth in order for them to work properly.
You can use model in place when you want to cut system families like roofs or walls.