surface holes

[Anonymous]

Hi,

I'm trying to create a TIN surface from breaklines and points.

But when I create at some place I have some holes. I tried to edit it and add line but it's not feeling the gap and look like there is a border inside.

How could I find if there is a boundary or why it's not creating the contour at this location?

(Triangle= yellow, Border= red, Contour= purple)

[Pointdump]

G,

Please post your drawing.

Dave

[F.Camargo · Accepted solution]

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@Anonymous wrote:

Hi,

I'm trying to create a TIN surface from breaklines and points.

But when I create at some place I have some holes. I tried to edit it and add line but it's not feeling the gap and look like there is a border inside.

How could I find if there is a boundary or why it's not creating the contour at this location?

(Triangle= yellow, Border= red, Contour= purple)

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Hi

Take a look of Jeff's video....

https://www.youtube.com/watch?v=1U2Zkc2z9vY

HTH

Fabricio

[autoMick]

Go to your surface properties, look under definition, then build and make sure your settings aren't causing the holes. Set the circled elements to "No"

Cheers

- Mick

[jmayo-EE]

All the options above are great. One more option.

Draw a pline around the hole. Perfect to the tin lines or not. Add the pline to the surface as a 'show' boundary.

[Anonymous]

I tried to turn all the parameter to No but I need to keep at list the max distance other case I have a lot of clean up to be done. But the max distance is set a 25m the hole is only 10m.

Very good video straight to the essential 🙂 But i'm not sure if there is a specific reason why this hole was there but now it's fixed. thank you

[F.Camargo]

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@Anonymous wrote:

I tried to turn all the parameter to No but I need to keep at list the max distance other case I have a lot of clean up to be done. But the max distance is set a 25m the hole is only 10m.

Very good video straight to the essential 🙂 But i'm not sure if there is a specific reason why this hole was there but now it's fixed. thank you

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I'm glad to help you. 

Fabricio

[Anonymous]

I do this and initially it works but I don't want extra lines cluttering my drawing so I delete the polyline that I used to establish the show boundary and then the surface warning symbol turns on asking me to rebuild.  When I rebuild the holes appear again (naturally).  I can't believe how irritating of a bug this is...

[jmayo-EE]

This is not a bug. It's your misunderstanding of the software. If you delete objects that define a surface they get removed from the surface definition. That's how it was designed to work.

Make a new layer for your boundaries. Place the plines on this layer and freeze it.

[Anonymous]

I realize that is not a bug.  The bug I am talking about is how Civil 3D leaves random holes in the surface when I have sufficient, perfectly sound data all around it.

[myke]

In the edit surface options, 'add point' to the surface (not an actual cogo point) at the mid-point of one of your missing triangles.  Use snap to midpoint, and it will suggest the actual elevation.  The surface will rebuild and cross the gap in your surface.  Now, in the edit surface options, you may (optional) delete the surface point you just added, and the surface will triangulate across the gap without the helper. 

I may be mistaken, but 'add line' used to do this, but not anymore.  Now 'add line' only seems to work across existing surface geometry to direct the triangulations (not across gaps).

[jmayo-EE]

Also note the holes typically will display a border if turned on in the surface style. Borders can be extracted and used as the show boundaries. This can speed up the process a bit with multiple surface holes.

[viniciosula]

Hi.

I found a great extension for the surfaces holes.

Best regards.

https://apps.autodesk.com/CIV3D/es/Detail/Index?id=4110279641409800922&appLang=en&os=Win64&autostart...

[Mohamed_Abdelaal7XR9C]

Just need to add to what you mentioned.

That it is better to delete the point that u add. Because if you don't delete it and for any reason you rebuild the surface for some change on the profile. This point will not be updated it will remain same level u enter before and this will cause a problem