If anyone is still looking for a solution you can make a roof cut into an existing roof using component model in place.
Revit extrude portions of a roof.
In this revit architecture tutorial i show you how to create an extruded roof form using the roof by extrusion tool.
Click architecture tabbuild panelroof drop down roof by extrusion.
We will go through the latter steps below.
In the roof reference level and offset dialog select a value for level.
Creates a roof by extruding a profile that you sketch.
About creating solid and void geometry.
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To resize the extrusion in the 3d view select it and use grips to edit it.
We will need an existing roof structure a new roof structure as well as an exact match to the portion of roof to be demolished.
Just enjoy the course and drop me line if you found it useful.
If you re new to revit you may be interested in my beginner s guide to revit architecture 84 part video tutorial training course the course is 100 free with no catches or exclusions.
Revit roof by extrusion a how to guide presented by dzan ta autodesk elite expert repro products inc.
With the roof by extrusion method in revit you first sketch the profile of the top of the roof in an elevation or section view and then extrude the roof.
This should keep you existing roof in tact and show a cut in the new construction phase.
To raise or lower the roof from the reference level specify a value for.
Hope this is of assistance.
Create a void extrusion and make to required cut in the new construction phase apply the cut and done.
For the purposes of this tutorial i am going to use the following simple building.
To view the extrusion open a 3d view.
Demolishing a portion of roof is quite different to the methodology of demolishing any other element in revit.
You can use a combination of straight lines and arcs to create the profile.
The height of the roof depends on the location where you sketch the profile in the elevation or section view.
Specify the work plane.
Display an elevation 3d or section view.
