Rib reference
The Rib tool creates a thin feature from an open sketch profile, in a direction parallel to the sketch plane, extruded to the nearest faces on a solid body in Fusion.
Design > Solid > Create > Rib 
Presets
- Last Used Values: Uses the last used values.
- Default Values: Uses the default values for the new rib.
- Plus: Adds a new preset.
- Reset: Resets the entered values to the values specified in the Set As Default selection list.
- Save: Saves the current values as a preset.
- Rename: Renames the selected preset.
- Delete: Deletes the selected preset.
- Soft By: Enables to specify how the presets are listed in the drop-down.
- Set As Default: Specify which values are used when creating a new rib.
Profile
Select an open sketch profile.
Direction
Symmetric: Extrudes half the thickness value to each side of the sketch profile.
One Direction: Extrudes the full thickness value to one side of the sketch profile.
Start
- Bottom: Measures thickness starting from the bottom.
- Top: Measures thickness starting from the top.
Thickness
Specify the distance to extrude the web, in a direction parallel to the sketch plane.
Extent Type
- To Next: Extrudes the web from the sketch profile to the nearest faces on a solid body.
- Depth: Extrudes the web from the sketch profile to a specified depth.
Depth (Depth option only)
Specify the distance to extrude the rib, in a direction parallel to the sketch plane, toward the nearest faces on a solid body.
Flip Direction
Flips the direction in which the web feature is extruded.
Draft Angle
Specify draft angle value for web.
Draft Pull Direction
Select a face or plane to define the pull direction.
Flip Direction
Flips the direction of the pull vector.
Fillet Radius
Specify the fillet radius value.