Create an opening in a roof
Create a roof sketch using the roof by footprint method. Use a parametric relationship between a roof sketch and walls. Create a void in a roof for chimney walls. Convert a roof sketch to a roof element.
Tutorial resources
These downloadable resources will be used to complete this tutorial:
Step-by-step guide
Create a gable roof, and then create an opening to accommodate the chimney stack.
- Open the project RF-Arch_Roof Opening_RVT2021.rvt. It opens in the 3D view.
- In the Project Browser, in the Floor Plans section, double-click Level 3.
- Zoom in on the main building.
To create the gable roof:
- In the Architecture tab > Build panel, expand Roof and click Roof by Footprint.
- In the Options Bar, deselect Defines slope and set the Overhang to 1'-0".
- In the Draw panel, verify that Pick Walls is selected.
- Hover over one wall and make sure the dashed line is on the outside of the walls.
- Press TAB to select the rest of the walls.
- Click to place the roof sketch.
- Click Modify.
- Select the top horizontal line and (with the CTRL key pressed), select one of the lower horizontal lines.
- In the Options Bar, select Defines slope.
- In the Modify | Create Roof Footprint tab > Mode panel, click Finish Edit Mode.
- When prompted to attach the highlighted walls to the roof, click Attach.
- Open the 3D view and select the chimney stack.
- In the View Control Bar, expand Temporary Hide/Isolate, and select Hide Element.
- Orbit around the 3D view to see that the chimney stack has been hidden, and that there is no opening.
- Reset Temporary Hide/Isolate.
- Open the Level 3 view and select the roof.
- In the Modify | Roofs tab > Mode panel, click Edit Footprint.
- In the Modify | Roofs > Edit Footprint tab > Draw panel, click Rectangle.
- Sketch a rectangle around the chimney stack.
- Click Finish Edit Mode.
- Open the 3D view.
- Select and hide the chimney stack.
Now, you can see the opening in the roof.
- Reset Temporary Hide/Isolate.
Note that the rectangle is now part of the entire closed-loop footprint, meaning you would have to re-enter sketch mode to remove it.
To create an opening that is independent of the closed-loop footprint:
- Open the Level 3 view.
- In the Architecture tab > Opening panel, click Vertical.
- Select the edge of the roof.
- Draw a rectangle anywhere on the back of the roof.
- Click Finish Edit Mode.
- Open the 3D view.
Select and move the new opening. It is separate from the roof and can be edited without having to re-enter sketch mode.
- Delete the opening.
- Save the project.
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