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Forums >> Revit Building >> Technical Support >> Toposurface and contour lines

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Sat, Oct 12, 2013 at 9:20:28 PM | Toposurface and contour lines

#1

martysoccer


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Hi there,

 

I have a problem with using the toposurface to generate contour lines. Please see attached.

 

The surface was made by placing points over an image. The circles mark example problem areas where revit has interpolated between points. The blue lines are both at an elevation of 47000.

 

From what I've read on forums there is little that can be done about this. I've tried adding extra points and the interpolation only corrects minimally. Is there anyway around this?

 

To generate accurate site plans, is the best practice to simply redraw the lines in 2d?

 

Many thanks

 

Hi there,

 

I have a problem with using the toposurface to generate contour lines. Please see attached.

 

The surface was made by placing points over an image. The circles mark example problem areas where revit has interpolated between points. The blue lines are both at an elevation of 47000.

 

From what I've read on forums there is little that can be done about this. I've tried adding extra points and the interpolation only corrects minimally. Is there anyway around this?

 

To generate accurate site plans, is the best practice to simply redraw the lines in 2d?

 

Many thanks

 

Marty SaidRevit Architecture 2013


Attached Images

124936_RVTTopoSurfaceProblems1A.jpg

-----------------------------------

Marty

Revit 2013 Windows 7

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Mon, Oct 14, 2013 at 8:54:23 AM | Toposurface and contour lines

#2

teafoe5


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Im a little confused.  What are all of the dots that are off of the line? 

 

Eitherway Revit is not as equiped to handle topo surfaces.  Unless we are doing renderings we dont usually model the toposurface, we just use linework



Edited on: Mon, Oct 14, 2013 at 8:56:48 AM

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Mon, Oct 14, 2013 at 9:23:20 AM | Toposurface and contour lines

#3

WWHub


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I have written on this subject before. 

 

What is correct?  Contour lines are subjective to interpretation.  Give any two drafters the data from a survey and you will get two different contour drawings and both will be more or less correct.  Revit's contour are always correct as I have found them.   Don't try to push Revit into creating something different by adding points because that will then be incorrect (unless they are your intentional changes).



Edited on: Mon, Oct 14, 2013 at 9:29:34 AM

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Mon, Oct 14, 2013 at 9:33:40 AM | Toposurface and contour lines

#4

teafoe5


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 "Revit's contour are always correct as I have found them"

 

I would agree.  Revits interpretation is probably more correct than the way we actually show on plans.


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Tue, Oct 15, 2013 at 10:46:26 AM | Toposurface and contour lines

#5

martysoccer


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Joined: Fri, Jul 6, 2012
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teafoe - thanks for the response. The dots off the line is more like the line that isn't with the dots. the dots are the ones ive placed down but the line is what is then shown by revit.

Eitherway, it appears the process is to use linework for what Im trying to achieve. 

Thanks again for the response (and thanks wwhub)


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Revit 2013 Windows 7

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