This "duct symbol" appears even though the duct is behind the wall ?

[jsanders]

I would like to hide these lines. Behind this wall are horizontal ducts. My colleagues and I have tried many different solutions, but we're stuck. We don't understand why they appear even though their is a wall in front of the ducts :

 

[Anonymous]

Do you have the centerlines turned off for ducts?

[jsanders]

Turning them off does indeed solve the problem, but on other views where I want this symbol to appear they all dissapear... I just don't want that line when the duct is hidden behind a wall. Why does it appear whilst there is a wall in front of the duct ? 🤔

[Anonymous]

What is your discipline set to in the graphics dialog for the view?

[isosa9APBT]

Why don't you just turn off those lines only in that view? It will hide those lines but only on that specific view without affecting anything else. I use that often when I need to hide something only on a specific view. 

[barthbradley]

Reducing your View's Far Clip may be all it takes to hide them.

[jsanders]

The view is set in "coordination"

[jsanders]

Unfortunately, this is not possible because the ducts are in a linked model.

[jsanders]

I think we tried this already, but I'll give it another shot.

[jsanders]

So I tried this but alas it doesn't work. Anyone have an idea? We're really stuck on this one !

[Charles.Ball]

I could not duplicate this problem with the settings as described. 

I could get the centerline to show if I changed the visual style to "wireframe". I could also get it to show if the Discipline was set to any of the systems, Coordination and Architecture caused the lines to be hidden. I could get the lines to show with both Arch and Coordination if I set the "show hidden lines" option to All (but they were dashed). I could not get them to show regardless of what I did with the "duct centerlines" visibility. Could you share more information about your settings? 

One thing you could try would be to turn off the duct centerlines (as you said this did work) then create a new view template with this setting and then only apply it to this view. The other views where you want to see the lines would either keep their current view template or settings whichever applies.