topic Re: assembly not showing up in section views in Civil 3D Forum

assembly not showing up in section views

caldwellkenya73 — Mon, 29 Jun 2026 21:59:57 GMT

I am not sure what is going on, but my assembly is not showing up in my section view. The corridor is created, but it's not showing up in the section view?

Re: assembly not showing up in section views

SoaresASBCAD — Mon, 29 Jun 2026 22:01:35 GMT

@caldwellkenya73

If the corridor is built but the assembly (corridor section) is not showing in your section views, there are several common causes. I'd check them in this order:

Verify the corridor has been sampled

If the corridor wasn't added to the sample line group, it won't appear in section views.

Go to Prospector → Alignments → Sample Line Groups.

Expand Sections.

Confirm your corridor is listed as one of the sampled sources.

If not, right-click the Sample Line Group → Sample More Sources and add the corridor.

Rebuild the corridor

If you've modified the assembly after creating the corridor:

Right-click the corridor → Rebuild.

If Automatic Rebuild is off, turn it on or rebuild manually.

Re: assembly not showing up in section views

Joe-Bouza — Tue, 30 Jun 2026 02:44:03 GMT

Verify the base line the section viewer is reading

Re: assembly not showing up in section views

andrewpuller3811 — Tue, 30 Jun 2026 02:54:52 GMT

Another item to check is if the corridor is checked as a section to display in the section group properties.

To check this -

Select a section view

Right click and select Section View Group Properties ...

Select the Section tab

Ensure the corridor is checked.

Re: assembly not showing up in section views

ah.mgahed — Tue, 30 Jun 2026 08:31:49 GMT

Hi,

Please check the Sample Line Group sources.

Go to:
Sample Line Group > Sample More Sources

Then make sure the Corridor and/or Corridor Surface is selected and added as a sampled source.

Also check:
Section View Properties > Sections tab

Make sure the corridor section is listed and has a visible section style.

The Assembly itself will not appear directly in the Section View. You need to sample the Corridor or Corridor Surface first.