Perpendicular through station

Module(s): Site Plan

You can use the Perpendicular through Station tool to drop perpendiculars from existing stations onto other elements, e.g., from the location line of a route onto the lines parallel to it. You can enter a transverse slope that is either constant or defined by a torsion line. Point symbols are automatically placed on the points of intersection.

To drop a perpendicular through a station

1. Click Perpendicular through Station (How).
   

   Activate Perpendicular through Station in one of the following ways

   • Menu bar: Create Terrain Landscaping

   • Palette: Tools Create area in the following module(s):

   Site plan

   • Configuration: Landscaping/Urban Planning Site Plan flyout
2. You can use the Input Options to specify whether you want to use the Selected element in its entirety or a Part of the selected element.
3. Click the element from whose stations the perpendicular is to be dropped. When set to Part of selected element, specify the section by clicking the start and end points or entering the station values.
   You can use Delta min in the Input Options to make settings for multiple intersections.
   

   When you click Delta Min on the Dynamic toolbar, only the point of intersection with the shortest distance to the reference element is created. Otherwise, all the points of intersection are created.

   

   • Click the point.
   • Align to points using the linear snap function and click the point.
   • Define the point by making entries in the dialog line.

   Tip: To find out how to enter points in Allplan, see Precision Drawing.

   Tip: The shortcut menu and dialog line provide tools and options to assist you in the process of entering points. For more information, see Tools and Options.

   Note: When you click points outside the element, the points on the element that are perpendicular to the points you clicked are used.

4. Click in the workspace with the right mouse button to open the shortcut menu and select Terrain point definition to specify settings for the site plan-specific point definition.
5. Enter a constant transverse slope as a percentage or select a torsion trace by clicking the location line and then a transverse slope trace of the torsion trace. You can automatically create a torsion trace using Label.
   Example of transverse slope
   

   Example – Transverse Slope

   Starting point on axis: Height=0.00
   	A left boundary of track B reference line C right boundary of track

6. Click Add line in the Input Options if you want the perpendiculars to be displayed as lines.
7. Click the elements to which the perpendiculars are to be dropped.

Example

Example – Dropping an Perpendicular from Location Line 1 to Location Line 2

Axis 1

Axis 2

In the example, the Add Line option is enabled.

The primary point number is taken from location line 2 (=Name setting in Modify Element Parameters: Location Line #2).
The secondary point number is automatically taken from location line 1.

Note: Symbol numbers, stations/codes and other information on the individual point symbols are taken from the corresponding reference element. The point number is created in accordance with Terrain point definition. For composite elements, the secondary point number is also transferred automatically from the reference element.