Cutting a void in Revit

[AL_Revit]

Hi,

Currently using Revit 23 and trying to figure out how to build something with topography on top of a corridor. If I build it as two surfaces there remains an ugly line when seen in higher plans. The only thing I can figure out is to have two versions of the topography, one where it's built as one surface so it looks correct from above, and another so that the plan can be cut correctly without extra topography showing on top of architectural elements. 

[barthbradley]

Tunnel in Revit Tutorial (youtube.com)

[ToanDN]

A valid reason to upgrade to 2024 or 2025 to use topo solids.

[AL_Revit]

The only problem with this is there is an extra line when seen from above where the tunnel is cut. Any why to graphically resolve this?

[barthbradley]

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@AL_Revit wrote:

The only problem with this is there is an extra line when seen from above where the tunnel is cut. Any why to graphically resolve this?

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Yes, there are several ways to resolve.  Post your file.  Let's see what I'd do.  

[AL_Revit]

Here's the file where you can see Level 1 plan that looks correct, but the site plan has an extra line overlapping the topography lines.