Hope this is of assistance.
Revit extrude portions of a roof.
Create a void extrusion and make to required cut in the new construction phase apply the cut and done.
If you d like to learn everything about revit roofs you may be interested in my revit roofs masterclass course.
Demolishing a portion of roof is quite different to the methodology of demolishing any other element in revit.
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.
In this revit architecture tutorial i show you how to create an extruded roof form using the roof by extrusion tool.
The highest level in the project is selected by default.
Revit roof by extrusion a how to guide presented by dzan ta autodesk elite expert repro products inc.
To view the extrusion open a 3d view.
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.
This should keep you existing roof in tact and show a cut in the new construction phase.
In the roof reference level and offset dialog select a value for level.
The height of the roof depends on the location where you sketch the profile in the elevation or section view.
We will go through the latter steps below.
About creating solid and void geometry.
To raise or lower the roof from the reference level specify a value for.
Click architecture tabbuild panelroof drop down roof by extrusion.
Just enjoy the course and drop me line if you found it useful.
Display an elevation 3d or section view.
If anyone is still looking for a solution you can make a roof cut into an existing roof using component model in place.
You can use a combination of straight lines and arcs to create the profile.
Subscribe to the repro products channel.
Specify the work plane.
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 completes the extrusion and returns you to the view in which you started the extrusion.
For the purposes of this tutorial i am going to use the following simple building.
