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Elevation Issue When Adding Contours To Surface

8 REPLIES 8
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Message 1 of 9
elijahvoigt
591 Views, 8 Replies

Elevation Issue When Adding Contours To Surface

Ok I cannot figure this out. Hopfully somone will know what I am talking about. I elevate my polylines in my drawing, but when I go to add them to a surface the elevations come in way lower. For example if I try to add in a 86' contour it distplays in the surface as elevation 7.17'. I know it has to be a units issue, but I cannot find the setting. Thanks in advance. 

Civil 3D 2014
i7-3930K Overclocked
32 GB Ram
Windows 7 Professional
8 REPLIES 8
Message 2 of 9
jmayo-EE
in reply to: elijahvoigt

First things first. Note that Civil 3D only works with feet or meters and you should use the appropriate C3D shortcut and template for feet or meters. Using the AutoCAD units command is generally a no-no.

 

If you are in feet or meters and using the correct icon to start c3D I would begin by confirming that the surface was not inadvertently moved vertically.

 

Go to the surface properties dialog, definitions tab. Examine the list of surface operation to see if there is an entry to raise/lower the surface or transform the surface. If so uncheck it and see if the issue fixes. If so go back and delete the entry. If not report back.

John Mayo

EESignature

Message 3 of 9
Pointdump
in reply to: elijahvoigt

Elijah,

 

The old Feet-and-Inch Thing is bitin' ya. Where did the contours come from? Can you post the drawing?

 

Dave

Dave Stoll
Las Vegas, Nevada

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64GB DDR4 2400MHz ECC SoDIMM / 1TB SSD
NVIDIA Quadro P5000 16GB
Windows 10 Pro 64 / Civil 3D 2024
Message 4 of 9
elijahvoigt
in reply to: elijahvoigt

Here is a screen grab as well as as a sample dwg. As you can see my contours are polylines with elevations around 80-90. As soon as I add them to the surface there is an issue. Surface definition displays the elevations from 0-8.5'. As far as I can tell my units are correct. 

Civil 3D 2014
i7-3930K Overclocked
32 GB Ram
Windows 7 Professional
Message 5 of 9
elijahvoigt
in reply to: Pointdump

The contours were taken from a design drawing from an engineer.  

Civil 3D 2014
i7-3930K Overclocked
32 GB Ram
Windows 7 Professional
Message 6 of 9
Jay_B
in reply to: elijahvoigt


@elijahvoigt wrote:

86' contour it distplays in the surface as elevation 7.17'.


 

Settings Tab of Toolsp[ace>Rt click dwg name>dwg settings>Units & zone tab>dwg units=inches.

 

86 / 7.71 = ~12

C3D 2018.1
C3D 2016 SP4

Win 7 Professional 64 Bit
Message 7 of 9
elijahvoigt
in reply to: Jay_B

Thats where it was. Thank you

 

Civil 3D 2014
i7-3930K Overclocked
32 GB Ram
Windows 7 Professional
Message 8 of 9
Jay_B
in reply to: elijahvoigt

No problem, glad to help.

C3D 2018.1
C3D 2016 SP4

Win 7 Professional 64 Bit
Message 9 of 9
wfberry
in reply to: elijahvoigt

First off, run this command:

 

aecdwgunitsetup

 

Notice that your drawing units are set to inches and the scale is not set up properly for regular Imperial.

 

Also, your drawing is set to International foot under the DRAWING SETTINGS.

 

Do you use International Foot or imperial?

 

Bill

 

 

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