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Wednesday, January 2, 2008

Absolute and relative elevations in Revit projects.

We don't have much need for this in Florida since we live at 0'00", but for the rest of you.....
How to set project zero level and display absolute elevation labels?

First set the true project elevation - use the function Tools > Shared Coordinates > Specify Coordinates at a Point, click a fixed point in your project and in the shared coordinates dialog enter the known elevation (the number).

In a view select the level label, right-click on it and in the context menu choose 'Element Properties'. In the Properties dialog click on the Edit/New button and in the 'Elevation base' field switch from 'Project' to 'Shared'. The level labels will show true (absolute) elevations."

5 comments:

William February 7, 2008 at 4:41 PM  

Yes, but how does this work with topography?

Is there a way to get the topographic points to be "shared" ie accurate?

William February 7, 2008 at 4:42 PM  

oh, btw, great stuff on here, sitewise!

Gregory Arkin - CADD Centers of Florida February 7, 2008 at 5:38 PM  

With the site tool of Revit you can create topography, or if you can get it, import the surveyor's points file to create the contour lines.
After that's done, you can create your levels based off the real elevations of the site surface.

William February 7, 2008 at 5:43 PM  

What about "after the fact"

I have started modeling, then get the correct elevation numbers and re-position the "shared" coordinates, then I get surveyor's points and want to create the topography off of that.

One of the great features of Revit, and linking files in general, such as InDesign, is the ability to work non-linearly without having to re-do work.

Am I missing something, or do the site tools need some work?

Gregory Arkin - CADD Centers of Florida February 7, 2008 at 6:08 PM  

I believe what you've done is correct. If your elevations are at the proper location when you started and you create the topography on the site plan in Revit, everything should automatically be correct. You can always adjust your elevations to match the site plan later and no have to redo your work.

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