01 05 DEFINING BREAK LINES - MDT25
1.5 Defining Break Lines
Due to the circumstances produced in the field data sample process, it is almost impossible to encode all points in an orderly manner, so that it is necessary to resort to other commands in the program to complete the assembly of the works.
First, we will draw a path that has constant width and from which we have taken only one side. Zoom in on the lower left corner of the window.
Now select the command Break Lines > Displaced Parallel (or Break Lines > Creation > Displaced Parallel). Select the Points mode, type in or validate the name BRK-LINES in the Layer box and activate the Create Points box, also assigning the Break level and the BRK-LINES code. Finally, in Elevations, select the Repeat option and press OK.
Then, you will see in the command area:
First point:
With the mouse, name positions close to points 112, 2, 3, 5, 6, 8, 9, 10, 11, 12, 14, 15 and 20 in this sequence. We can use the transparent commands zoom, frame, etc. In case of error, enter U to undo the last vertex. After the last point press <Enter> and when the program asks for an orientation, click with the mouse on a point to the left of the newly created line. Continue with data input:
Separation: 5
13 points created
We see that a new polyline has been drawn in the BRK-LINES layer to the left of the original. In addition, each vertex has created a point with the same elevation as the corresponding original points.
We zoom in again by extension. Likewise, we will manually complete the lines that configure the basins of the pool wall. Select Break Lines > Point numbers (or Break Lines > Creation > Numbers).
Instead of selecting one of the existing layers, we will create a new one. Press the New button.
For the layer name, type BRK-LOW_WALL, press the Name button and select the Blue color. Press OK and then OK again.
Enter the following sequence of point numbers:
First point: 99
First point: 21
Another point:
First point: 92
Another point: 22
Another point:
First point:
Command:
Repeat the process by creating the BRK-HIGH_WALL layer, with Blue color and the following sequence of point numbers:
First point: 99
Another point: 24
Another point:
First point: 28
Another point: 12
Another point:
First point:
Command:
Finally, we will draw the low-slope lines with the same command, but choosing the existing LOW_SLOPE layer. Link points 97, 29, 48 with the previous procedure and then 97 and 98.
Thus, the settings regarding the drawing of structure and break lines are completed. Save drawing as Demo1.DWG in directory C:\MDT25_Projects\Tutorial01. As a project file is active, the program asks if you want to add the drawing to the project, to which you should answer yes.
File Overview
Once the job is finished, we list the existing project files in the C:\MDT25_Projects\Tutorial01 directory. The main files are the following
File Description
Tutorial01.prj MDT project file
Demo1.pun Points file to be imported
Demo1.dwg Drawing with break lines