create toposurface

[Anonymous]

Hi guys,

just wondering to know is there any way I can create a 3d toposurface from cad dwg I have cad dwgs all surveys contours are having no elevations just 2d flat surface.

I think its not possible to produce 3d topo out of it but dont know is there any other way ro do I have to get another file from surveyor with z elevation?

[ToanDN]

If you can get a CAD file from the surveyor with elevated contour then get it.  If not, you can edit the CAD drawing and trace the contours to create polylines with Z values import it in Revit to create a topography.

[Anonymous]

hello
you can import the cad drawing tou your site view and pick point on the flat countours coming form cad file with changing the elevation and the 3d topo will be easier to model

if you think that my answer deserve a kudo dont hesitate to give it to me , and if you find the solution inside my answer will be glad to check it as a solution , thanks

[Anonymous]

Thanks to both of you for prompt reply.

I ended up asking for new new file with z Height from another consultant

[Anonymous]

If you get a 2D survey you CAN create a 3D topography in Revit.

You'll need to extract the height values, create a 'points' file and use the points file to create the topography. I've be doing this with 2D CAD files for over 13 years into Revit topography.

[Anonymous]

A lot of people don't realize how easy it is.

You really can save a lot of time and create a 3D Topography with nothing but 2D information. I have used this a few times and now I had to look it up to remember the CAD commands to use.

I made a 2 minute video to make it easier to remember how to do it:

https://youtu.be/l2nQwSfQ1YQ

Thanks Laura,

R

Vasco

[Anonymous]

This was really useful. I've followed all the steps and everything looks as per the PDF however, when imported to Revit, the surface is still flat . When I click on the points though, it does show the correct elevation in the properties windows. 

Not sure why the surface still shows totally flat? 

Any assistance would be great!

Thanks, 

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@Anonymous wrote:

If you get a 2D survey you CAN create a 3D topography in Revit.

You'll need to extract the height values, create a 'points' file and use the points file to create the topography. I've be doing this with 2D CAD files for over 13 years into Revit topography.

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