AutoCAD Civil 3D

[#1]

The UKIE Toolbox is presumambly available to users in the UK and Ireland.  Since the OP is using imperial units, I doubt it is an option.

Why such a tool would be provided to some users and not others I can't imagine.

[#2]

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troma wrote:

Why such a tool would be provided to some users and not others I can't imagine.

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It can be installed from any C3D installation..although if you use Deployments I would imagine it would need to be included in that. 

You can add the UKIE Content pack after installation by going to Windows' Remove programs, select the version of C3D you are using, at the screen to choose to Uninstall, reinstall, repair, etc., choose Add or Remove Features, then check the UKIE Content.

[#3]

Good to know.

Still don't understand why a tool like this would be hidden away in a country kit, even if it is available to all.

[#4]

Unless you have that tool available there is no need to change the 2d contours to 3d.   I did find a tool I wasn't aware of in the Modify Tab under Design that allows you to directly edit the elevation of a polyline without having to bring up the properties dialogue box.   Unfortunately it only works on one polyline at a time.

Definately use the polyline edit multiple and join the 50 ft segments together rather than editing each segment.

[#5]

Check this forum post: http://forums.autodesk.com/t5/Visual-LISP-AutoLISP-and-General/Change-poly-topo-elevations-increment...