Silhoutte of floor below in given floor

[chitecture_x]

Hi there 
Any advice on how to show basement floor wall extents on the ground floor plan? 

Operating system used: Windows 11

[CosminF]

Hi,

Using trace and reference might help you achieve that: https://help.graphisoft.com/MEP/29/INT/_MEP_Designer_Help/030_Interaction/030_Interaction-104.htm

If you want to see the actual elements, not a reference you can edit your floor plan cut plane settings https://help.graphisoft.com/AC/27/INT/_AC27_Help/050_ViewsVB/050_ViewsVB-11.htm

Or you can make the walls show up on home story & above, from their respective properties.

[Steve Jepson]

Several ways to do that.  Do you mean in a temporary view, Layout, or something that you can turn on or off with layer combos ? 

Alt+F2  ? 

[chitecture_x]

Hi Steve
what ive done so far is polyline the external extents of the basement walls and match it to the gridlines of GF. 
I need it in layout

[chitecture_x]

hi CosminF
I ll check em out after work, thank you for the refs.

[Erwin Edel]

You could setup a view for the basement with Graphic Overrides and a layer combination to show only the walls as dashed lines and place this view on top or below your ground floor view on the layout.

This is how we make structural engineering drawings, which use different projection rules to architectural engineering.