Short lesson for everyone learning Revit about how to change graphical appearance of walls, floor and roofs in plan and section.
Imagine that for structural engineer you want to emphasize the structural core of your building. What you need to do?
Go to Properties panel of your view and open Visibility/Graphics Override window. It should look like on the image below. Walls by default have thick outline.
Notice that there is a tick box called Cut Line Styles in an area named Override Host layers. Check that box and hit Edit… button. New window will appear where you can adjust line styles individually for all functional elements of your wall, floors and roof.
For purpose of our task we need to make thicker only the structure  – the core elements.
Thank you for learning with PabLab 🙂