Civil 3D: Changing the elevations of an existing surface by a random value in a given range
Simulation of the surveying of the project surface, finish grade.
Changing the elevations of an existing surface by a random value in a given range.
Unfortunately, sometimes you have to simulate surveying and perform a stupid procedure to change the finish grade/
The first part shows the traditional way where points from a surface are imported into EXCEL. In EXCEL, a special command generates random deviations of elevations. Then, using the changed points, a surface is created again, which differs from the finish grade.
However, this method is not only more laborious, but it destroys the entire surface order (i.e., the fact that you rearranged the edges to fit the surface to a real one).
And if the first method is obvious to you, I invite you to get acquainted immediately with the second method (from 7:31)
In the second part, I propose my own method, where a surface with random deviations is initially created once. And this deviation matrix (surface) can be repeatedly applied to the finish grade. That is, we spend time once to create a deviation matrix and then use it regularly.
For my purposes, I have enough deviation matrix of 1 km in size. If necessary, the surface can be multiplied.
For clarity, I used my old practice- the surface elevation, which indicates the elevations of two surfaces and the difference between them
Method 1:
0:00:00 Attempt to extract points from the surface
0:00:11 Enabling the display of points (visible)
0:00:15 Extraction of points from the surface
0:00:26 Disabling the request for annotations and elevations when creating COGO points
0:00:35 Converting ACAD points to COGO points
0:00:50 Exporting points to TXT
0:01:01 Text by columns (elevations in cells)
0:01:13 Creating random values
0:01:39 Adding random values to a elevation
0:02:37 Importing points to Civil
0:03:05 Setting the point elevations to display 3 decimal places (precision precision mm)
0:03:48 A random deviation of 9 mm is visible (195.809-195.80)
0:03:55 Creating a surface based on points with random deviations
0:04:16 Adding surface elevations
0:04:27 Finding the volume surface between the design and the random surface
0:04:40 Switching labels to the volume surface
0:04:44 I.e. showing deviations between two surfaces
0:04:51 Switching the volume surface display to fill based on elevation deviations
0:04:58 Assignment of the range of surface deviations (from -10 to +10mm divided into 4 intervals)
0:05:15 Copying a label that indicates the elevations of two surfaces and the difference between them
0:05:35 Setting the label to display the desired surfaces
0:05:52 Removing surfaces drawn with a label (surfaces of someone else's drawing)
0:06:10 Exporting dots with a comma delimited
0:06:13 Only coordinates need to be extracted from these points
0:06:33 to make a vertical selection, hold down ALT
0:06:45 Deleting unnecessary point numbers
0:06:51 Copying point coordinates
0:07:07 Points are needed to copy labels (no need to copy manually)
0:07:15 Just paste the coordinates into the command line
0:07:25 The labels show random deviations
Method 2:
0:07:31 Starting work on method #2
0:07:44 Creating points on a grid (with a 10 m cell)
0:08:09 Exporting points to TXT
0:08:19 Text by columns (elevations in cells)
0:08:28 Creating random values (more on 1:13)
0:08:43 Creating (TXT) points with random elevation values
0:08:49 Deleting old points
0:09:00 Importing new points with deviations (from -2cm to +2cm)
0:09:16 Creating a deviation matrix (surface) for points with random deviations
0:09:33 Changing the horizontal interval (for clarity)
0:09:56 Checking deviations
0:10:04 Exporting a surface to LandXML
0:10:07 Importing a surface with random elevations (which was done earlier)
0:10:28 Creating the volume surface (between the random surface and the original one)
0:10:45 Checking the resulting elevations
0:10:49 Creating an empty surface
0:10:56 Adding a volume surface to an empty surface (which will allow editing and exporting to LandXML)
0:11:09 Configuring surfaces to display in the Surface Elevation LAbel
0:11:17 Checking the label values
0:11:34 Copying coordinates for labels (see 06:02)
0:11:42 Copying the label; select the anchor NODE (SHIFT + right mouse button) (insert coordinates into the command line)
It may be interesting to see my work.
stadiamark.almagest.name
review of the apps:
Auto level surveying calculations + Сollimation https://play.google.com/store/apps/de...
Spreadsheet interpolation https://play.google.com/store/apps/de...
Earthwork. Volume Measurement, altitude control over the base surface, adding Contour Lines, adding Direction Arrow with Slope Labels(Two-point) https://play.google.com/store/apps/de...
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