Forums >> Revit Building >> Technical Support >> Issues with Levels

rdavies1973

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Joined: Sun, Sep 28, 2008
20 Posts
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Hi all

Got a puzzling effect happening in Revit 2016.

Got 3 attachments to illustrate the issue.

The attachment called Level Heights shows my levels sitting between 196-200m (196000 - 200000mm).

The attachment called Toposurface Levels shows an exaple of the levels sitting at similar height to my elevation levels (e.g. 196000mm). i.e. the toposurface is supposed to be at similar levels to the elevations.

The attachment called Toposurface in 3D shows the current relationship between the same toposurface and the levels. Completely unaligned.

Even though their elevations are saying that they are in a similar plane, Revit is showing something different.  Any ideas as to why it would do this?

One important note is that the elevation levels were originally set at a much higher level and adjusted (lower) once survey information was provided. The toposurface was also readjusted based on the survey information.

There is also phasing involved (Existing/Demolition/Proposed phases). I currently just have the 'Existing' toposurface in the project file ... will be setting up a 'proposed' toposurface later.

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

Revit is doing exactly what you have told it to do.

When you create topography initially using points, it is all relative to your level one.   All point elevations are relative to that.   If you later relocate your project, the model components and levels will move but your site will remain where it was.  It is always better to create your topography from a survey import because of this problem. 

Changing your point elevations is still relative to that initial level one location, not your new elevation.   You will have to drag your topo down to the correct location. Or maybe better - recreate it from the survey points now that your project is located correctly.

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rdavies1973

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Joined: Sun, Sep 28, 2008
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Cheers WWHub.

The joys of working for someone who asks you to draw up the whole project without the survey completed!

Another note for next time.

R

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

I like to always have my site in a linked file.  Then because it is linked into a workset, it is easier to control and you don't have to keep it loaded.  Plantings can really bog down performance.

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