Civil 3D Survey Figures

[Anonymous]

Hello Folks,

Has anyone out there figured out a way to have Linetype generation functionality with Survey Figures other than exploding them and creating 2d polylines out of the remains. That, I found out destroys the Breakline element to the Survey figures. Any thoughts would be appreciated.

I'm trying to use the Survey figures as useful linework in a drawing and keep their integrity as breaklines to create a surface.

Wil

[ctbailey]

"Flatten" your figures to elevation 0. They will at that point actually become useful. You can trim/extend off them, they look good, and they are still used as breaklines in your TIN.

Of course, you'll need to select "proximity" when adding the survey figures as breaklines to the surface. If you mistakenly use the default "standard" and your figures are flattened, you'll have some real bad TINs.

Craig

[Anonymous]

Hi Craig,

All the flatten command does is to "explode" the figure into a standard
polyline. Obviously, you can do any AutoCAD drafting thing you like
with the polyline. However if you modify it, the resultant information
is not supported by the survey information and you may care to take that
into account


Regards,


Laurie Comerford

ctbailey@bailey-associates.com wrote:
> "Flatten" your figures to elevation 0. They will at that point actually
> become useful. You can trim/extend off them, they look good, and they
> are still used as breaklines in your TIN. Of course, you'll need to
> select "proximity" when adding the survey figures as breaklines to the
> surface. If you mistakenly use the default "standard" and your figures
> are flattened, you'll have some real bad TINs. Craig

[jefflambert9091]

Craig,

When you say Flatten, are you talking in your style or after you explode them? What goes bad if you use standard over proximity? Have just begun the C3D journey in workflow and hopefully you can help me avoid a few problems.

[Matt.Anderson]

A standard breakline adds elevation data to a surface model based on the Z elevation of the vertex.



A proximity breakline does not add elevation data, but only controls the triangle edges based on the additional elevation information in the surface, ie points.



By flattening your survey figure after exploding them, that linework now has a Z elevation for each vertex of Zero. Adding this to your surface would make your surface odd...unless you are designing at sea level or 100 feet below an architects assumed benchmark.



Matthew Anderson, PE

[Sinc]

I don't think flattening the Survey Figures gets anywhere... They still need to be converted to 2D Polylines before linetype generation can be turned on, right...?

-- Sinc
http://www.ejsurveying.com
http://www.quuxsoft.com

[Anonymous]

This is the same problem features lines in corridors have. We basically
have to draw all the geometry using basic AutoCAD polylines for the
plotting, then build a corridor to follow them. Why can't the corridor
feature lines have linetype generation like regular polylines? I know
they're 3D polylines, but it just seems ridiculous not to be able to do
that.
--
EB42
Civil 3D 2009 w/ SP2.1
Quad Core Xeon
(3)250GB SATA Drives
4GB RAM

willrohman2847 wrote:
> Hello Folks, Has anyone out there figured out a way to have Linetype
> generation functionality with Survey Figures other than exploding them
> and creating 2d polylines out of the remains. That, I found out destroys
> the Breakline element to the Survey figures. Any thoughts would be
> appreciated. I'm trying to use the Survey figures as useful linework in
> a drawing and keep their integrity as breaklines to create a surface. Wil