SURVEY DATABASE-NORTHING-EASTING VALUES

[CADEngr2014]

Hello,

I am using Civil 3D 2015.

I have added some borings to a survey database and confirmed that the northing/easting values are as I would expect.  However, when I insert these into my drawing by highlighting the points in the prospector/survey tab, right clicking and select Insert Into Drawing, they have a different northing/easting value as shown in Prospector points.  What the heck is causing this variation?

[Letif]

Check the datum of your drawing by going into settings from the prospector. The datum of your drawing and the datum of your soil boring location should much

[CADEngr2014]

Letif,

Thanks for that response.  I have NAD83 North Carolina, Us Survey Foot in drawing file and [SPC] NAD83(2011)/NAVD88 US Survey Feet in the point csv file originally started with to create survey database.  I am not exactly sure what SPC means or (2011) reference to NAD83.  What is in the above datum that would cause this descrepancy?

[CADEngr2014]

Also, if there was a discrepancy in datums (the cad file being different from the point csv file) wouldn't that cause the points to import incorrectly into the survey database originally?

[IanMcClain · Accepted solution]

Hi CADEngr2014,

Check your survey database datum settings. This can be found by right clicking on the database and choosing "Edit survey database settings..." or from the survey pull-down menu.

Both the drawing and the survey database have independent datum settings. If they are different a conversion will take place when data is transfered from one to another, unless one of them is "no datum, no projection". This is what I often find is the problem when in your situation.