The Dave and Dan Civil 3D Show
Dan Philbrick and Dave Simeone add their colorful and insightful views, opinions, and expertise on Autodesk Civil 3D and the civil engineering marketplace.
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- posted 06/02/07 by Daniel Philbrick Borehole data and Civil 3D....
- I am a hockey fan and the only word I can come up with for this Stanley Cup series is “Boring”. I’d love to see Ottawa win (or at least be competitive), but it has not been the most exciting series. Speaking of “Boring”, there have been a few recent inquires about how to handle Borehole data in Civil 3D. I thought I’d take a break from this hockey game and write about Borehole data.
There are 2 ways setup borehole data in Civil 3D – User Defined Properties and External Data References. Both methods allow you to have more than one elevation per point object. The first method I’ll discuss is via User-Defined Properties. To use this method, you first need to create a User-Defined Property Classification and then create the User-Defined Properties in that classification. The following dialog shows the creation of a user-defined property for a borehole elevation.
Now that you have User-Defined Properties representing Borehole data, the next step is to import data into those fields. We’ll do this by importing from a TXT file with a format of Point Number, BoreHole Elevation 1, BoreHole Elevation 2 (tab delimited). A snippet of this file looks like the following:
Next you need to create a custom Point File Format which will import the data into the User-Defined Properties. You do this by going to the settings tree and creating a Point File Format. The following dialog shows this dialog with the Properties of Point Number, BH_1 and BH_2 for the properties.
The last step is to Load the data in from the TXT file. Go to the menu and select Points->Import/Export Points->Import Points. Importing the Point file (with the format created above) will populate the User-defined Property fields with the Elevations defined in the TXT file.
The hard work is now done. The last step is to create a Point Group and define the elevations based on the Borehole data. The key part of this is to create the point group and assign an elevation override on the “Overrides” tab of the Point Group Properties. This is shown in the following dialog.
Now that we have a Point Group a surface can easily be created. In the next post, I go through the process of modeling Borehole data using External Data references.
Back to the hockey game – Ottawa is up 4-3, this series is not so boring anymore!
Dan
User Comments
It's only been boring if you are an Ottawa fan....GO DUCKS!
Posted 6/6/2007 11:43 AM by Joshua Nelson