Place Catenary String

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Place Catenary String

Place Catenary String

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p_draw_catenaryPlace Catenary String tool lets you manually place a line string for a single wire (catenary string) between two towers. You can use this tool in places where the automatic detection of wires fails.

You define the shape of the catenary curve with three mouse clicks. Optionally, the start and end point of the line string are defined by mouse clicks as well. Start and end points only effect the length of the catenary curve but not its shape.

The line string element for the wire is drawn on the active level using the active symbology settings of MicroStation.

To place a catenary string manually:

1. Use Draw Vertical Section tool to create a longitudinal section along the wire from tower to tower.

2. Select the Place Catenary String tool.

This opens the Place Catenary String dialog:

place_catenary_string

3. Define settings.

SETTING

EFFECT

Start location separately

If on, the first data click defines the start point of the catenary string.

Snap to

If on, the three curvature points are snapped to the closest laser points in a given class. This lock is normally on.

_select_classes

Opens the Select classes dialog which contains the list of active classes in TerraScan. You can select multiple source classes from the list that are then used in the Snap to field.

Fit using

If on, the catenary string is fitted to laser points in the given class within the given tolerance.

_select_classes

Opens the Select classes dialog which contains the list of active classes in TerraScan. You can select multiple source classes from the list that are then used in the Fit using field.

Classify to

If on, laser points within the given radius around the catenary string are classified into the given class.

End location separately

If on, the last data click defines the end location of the catenary string.

4. (Optional) Define the start point of the catenary string with a data click.

5. Define the first, second, and third curvature point with data clicks.

6. (Optional) Define the end point of the catenary string with a data click.

The application draws the catenary string defined by the given points temporarily into the design file.

7. Accept the catenary string with another data click.

The catenary string is drawn permanently into the design file and laser points are classified into the given target class, if the corresponding setting is switched on.

The placement of a catenary string can be undone by using the Undo command from the MicroStation Edit pulldown menu. The classification of the points along the catenary string can be undone by using the Undo command of TerraScan.