If the view range intersects the geometry of a level in your main view that level cannot be used as an underlay in the main view.
Revit roof plan underlay.
How do you make roof lines visible in floor plans revit 1.
This issue occurs because there is an incorrect view range in the main view.
Use the underlay parameters on the properties palette to set an underlay.
Select the linework tool in the view panel.
In the main floor level the bottom of the primary range is set to main floor with an offset of 1.
Open the plan view of the level in which you want to see the roof line.
On the properties palette for range.
The slice of the model between that level and the next level up displays.
I highlighted the roof lines that are the underlay.
At first i thought the problem was that i had underlaid the first floor on the lower level revit didn t like underlaying a floor above but i ve done that on other projects and it worked as expected.
Once i do this my roof element become visible in the ground floor plan.
Now it s at this point where i could just trace over the perimeter.
So i change the underlay parameter you find this is the properties palette to the level where your roof or roof light canopy etc resides.
All other choices are absolute.
When you tried to underlay a floor only doors and windows were visible.
Now the next step is to select the linework tool from the modify tab view panel.
Three of the underlay options current level level above and level below are relative to the current level.
I thought i would see what shows on the first floor view.
In this example my roof element is at level 1.
You set an underlay by specifying a level.
Had to crack open revit and play for a while.
For example you may want to set an underlay for the casework in the kitchen to make it easier to place the light fixtures above.
Then select the line style you want to represent the roof overhang in the view.
Base level select the level you want to underlay.