Extract a User Specified contour elevation from a surface

[Wish List System]

Summary: I would like a tool that allows us to specify a specific elevation and would then generate and extract that contour from a surface.

Description: Several times I've needed to extract a very odd elevation from a surface to show in the plans, such as where a FEMA flood line, or top of water elevation sits on a surface. I've had to change the contour interval and go in and extract the elevation at say the closest 0.05 (as smaller intervals are generally too cumbersome to display).

It would be easier to have a tool that lets me just input the elevation I need and then it can generate the contour line from the surface. Perhaps it could even add some tools to help weed/add curves to the resulting polyline.

Product and Feature: AutoCAD Civil 3D - Surface Modeling

Submitted By: Adam Reilly on 06/01/2015

[rkmcswain]

You can do that now.

Surface Properties > Analysis tab > Add Contour Analysis.
Say you want the 95.0' contour.
Add a single range of 94.99 to 95.01
Turn on User Contours in the surface style (and maybe change the color so it will stand out)
After the contour(s) are displayed, run the command "_AeccSurfaceExtractObjects", uncheck everything except User Contours.
The 95.0' contour is (or contour lines are) now polyline(s).

[Opie]

You can do that now.

Surface Properties > Analysis tab > Add Contour Analysis.
Say you want the 95.0' contour.
Add a single range of 94.99 to 95.01
Turn on User Contours in the surface style (and maybe change the color so it will stand out)
After the contour(s) are displayed, run the command "_AeccSurfaceExtractObjects", uncheck everything except User Contours.
The 95.0' contour is (or contour lines are) now polyline(s).

In that same tab, there is an option for the Analysis Type for User-defined contours. Add the appropriate number of ranges and click the Run Analysis button. If the elevations listed are not correct, edit the elevations as needed.

[rkmcswain]

In that same tab, there is an option for the Analysis Type for User-defined contours. Add the appropriate number of ranges and click the Run Analysis button. If the elevations listed are not correct, edit the elevations as needed.

Even better. Thanks, learned something myself today!

[Wish List System]

Extract a User Specified contour elevation from a surface

Summary: I would like a tool that allows us to specify a specific elevation and would then generate and extract that contour from a surface.

Description: Several times I've needed to extract a very odd elevation from a surface to show in the plans, such as where a FEMA flood line, or top of water elevation sits on a surface. I've had to change the contour interval and go in and extract the elevation at say the closest 0.05 (as smaller intervals are generally too cumbersome to display).

It would be easier to have a tool that lets me just input the elevation I need and then it can generate the contour line from the surface. Perhaps it could even add some tools to help weed/add curves to the resulting polyline.

Product and Feature: AutoCAD Civil 3D - Surface Modeling

Submitted By: Adam Reilly on 06/01/2015

[Wish List System]

Extract a User Specified contour elevation from a surface

Summary: I would like a tool that allows us to specify a specific elevation and would then generate and extract that contour from a surface.

Description: Several times I've needed to extract a very odd elevation from a surface to show in the plans, such as where a FEMA flood line, or top of water elevation sits on a surface. I've had to change the contour interval and go in and extract the elevation at say the closest 0.05 (as smaller intervals are generally too cumbersome to display).

It would be easier to have a tool that lets me just input the elevation I need and then it can generate the contour line from the surface. Perhaps it could even add some tools to help weed/add curves to the resulting polyline.

Product and Feature: AutoCAD Civil 3D - Surface Modeling

Submitted By: Adam Reilly on 06/01/2015

[Wish List System]

Extract a User Specified contour elevation from a surface

Summary: I would like a tool that allows us to specify a specific elevation and would then generate and extract that contour from a surface.

Description: Several times I've needed to extract a very odd elevation from a surface to show in the plans, such as where a FEMA flood line, or top of water elevation sits on a surface. I've had to change the contour interval and go in and extract the elevation at say the closest 0.05 (as smaller intervals are generally too cumbersome to display).

It would be easier to have a tool that lets me just input the elevation I need and then it can generate the contour line from the surface. Perhaps it could even add some tools to help weed/add curves to the resulting polyline.

Product and Feature: AutoCAD Civil 3D - Surface Modeling

Submitted By: Adam Reilly on 06/01/2015

[Wish List System]

Extract a User Specified contour elevation from a surface

Summary: I would like a tool that allows us to specify a specific elevation and would then generate and extract that contour from a surface.

Description: Several times I've needed to extract a very odd elevation from a surface to show in the plans, such as where a FEMA flood line, or top of water elevation sits on a surface. I've had to change the contour interval and go in and extract the elevation at say the closest 0.05 (as smaller intervals are generally too cumbersome to display).

It would be easier to have a tool that lets me just input the elevation I need and then it can generate the contour line from the surface. Perhaps it could even add some tools to help weed/add curves to the resulting polyline.

Product and Feature: AutoCAD Civil 3D - Surface Modeling

Submitted By: Adam Reilly on 06/01/2015