Tables

Introduction to Alignment Design tables

When alignment design is started the main dialogue is loaded, containing a set of tables (tabs), one set related to horizontal design, and a second set related to profile (vertical) design.

Table 1: Alignment Design tables

Table basics

For a brief description of the tables, refer to the topics below:

Input H

The table with the input data of horizontal geometry forms the base for the alignment calculation in NADB.

Result H

This is the table that holds the result data for the horizontal geometry and displays the calculated result from the alignment calculation.

Every row in the table is linked to one element in the alignment, where the first line in the table corresponds to the first element in the alignment.

Errors H/V

When the alignment is mathematically incorrect (Calc Not OK), the error will be illustrated in the table Error H/V.

These tables display the traditional transcription for the horizontal or vertical input data in the NADB format, which can be helpful for those who are familiar with this format.

Tip: To save this report, select the function Save As from the menu File.

These tables display the traditional transcription from the result from the NADB calculation.

This table displays the traditional transcription from the NADB calculation in a ten-table form.

Reference Points

Reference points are used to control the desired maximum and/or minimum distance from selected reference points to the alignment. Reference points do not control the alignment; their role is to be a visual guide and help in designing the alignment. The reference points, which do not fulfill the set requirements of maximum and/or minimum distance, are displayed as red values in the table and with an open circle in the drawing.

Reference points can be defined using any of the following options:

The different operations concerning the reference points are not saved in history, thus undo is not possible with the aid of history.

Show

The display of the reference points can be any of the following:

Select the desired display type from the pull-down menu of the cell.

Chainage

The corresponding chainage for the reference point will be displayed.

E, N, and Z

Coordinates and elevations for the reference points are displayed in these columns.

Note: Dragging the reference point in the drawing automatic updates chainage and coordinates in the table.

Slope

The calculated vertical slope from the reference point to the alignment is displayed in this column. The slope is presented as defined in the setting Vertical of the function Options.

Delta Z

The calculated vertical distance between the reference point and the alignment is displayed in this column. Negative values indicate that the reference point is lower than the alignment.

Minimum dZ

The minimum vertical distance from the alignment to the reference point is to be defined in this column. Define negative values if the reference points are to be lower than the alignment.

Maximum dZ

The maximum vertical distance from the alignment to the reference point is to be defined in this column. Define negative values if the reference points are to be lower than the alignment.

Distance H

The horizontal distance from the reference point to the alignment is displayed in this column. Negative values indicate that the reference point is to the left side of the alignment in the direction of chainage. An alignment design not fulfilling the required distances to the reference point will be marked with a red color.

Minimum Distance H

The minimum horizontal distance from the alignment to the reference point is to be defined in this column. Use negative values if the reference point is to the left of the alignment in the direction of chainage.

Maximum Distance H

The maximum horizontal distance from the alignment to the reference point is to be defined in this column. Use negative value if the reference point is to the left of the alignment in the direction of chainage.

Color

The desired color for the display of the reference point can be defined from the cells of this column.

This menu option adds a reference point in the list but leaves the values for placement open. The user must assign chainage and distance, or coordinates N, E, Z manually.

This option adds a reference point in the N, E coordinates where the user points in the drawing. The Z-coordinate is derived from the terrain model in the current coordinate to place the reference point on the terrain surface.

Allows for elements from the drawing to be picked. The alignment design calculates the reference points along the element with intervals, which is stated in the command line as well as the element's end points.

Delete

Deletes marked reference points. By holding down the Shift-button a number of reference points can be marked.

Sort

Name

Sorts all the reference points in alphabetical order according to the point’s name. The point's name can be edited by typing a new name in the column for the name.

Chainage

Sorts the reference points according to chainage.

Zoom

Zoom selected/marked points.

Select several Reference points

If there are a number of reference points marked and the shortcut menu is accessed additional options in the menu are displayed:

Hide

Hides the selected symbols referring to the selected points in the drawing.

Draw symbol

Draws the selected reference points as symbols in the drawing.

Draw symbol and name

Draws the selected reference points as names in the drawing.

Delete

Deletes the selected points both in the table/list and drawing.

Color

Gives an option of assigning all the selected points the same color in the drawing.

Distance

Move the selected points a set distance from the construction line. If the points are to be placed left of the construction line a negative distance is used.

Minimum Distance (Horizontal)

States the minimum permitted distance between the point and the construction line declared with a value. To state the distance left of the construction line, a negative value must be used.

Maximum. Distance (Horizontal)

States the maximum permitted distance between the point and the construction line declared with a value. To state the distance left of the construction line, a negative value must be used.

History

History is a powerful function where different alternatives can be saved. Just mark a step when designing the alignment as an alternative to be saved, and continue with optimizing the alignment, both horizontally and vertically.

Horizontal OK

A green tick in this column indicates a saved operation where the calculation of the horizontal alignment was successful.

A red tick in this column indicates a saved operation where the calculation of the horizontal alignment was not successful.

Vertical OK

A green tick in this column indicates a saved operation where the calculation of the vertical alignment was successful.

A red tick in this column indicates a saved operation where the calculation of the vertical alignment was not successful.

Alt (Alternative)

To save the selected design step as an alternative, double click in the column Alt or select Alternative from the shortcut menu.

The alternatives are saved on the drawn alignment object in the drawing. For creating a number of different alternatives for the same horizontal alignment, use the option Alternatives. A tick in the column Alternatives indicates that an alignment of this kind is saved. Users can store different alternatives of the same alignment when the function Alignment Design is closed using the button OK Draw.

Together with the alternatives, possible user comments can be saved too.

Note: An alternative is only saved on the drawn horizontal alignment in the drawing.

Tips:

Mark

To mark the selected design step, double click in the column Mark, or access the shortcut menu and choose Mark or from the menu Edit, History using the option Set Mark.

This mark is used to mark the starting alignment when it is uncertain if the outcome will be successful. With the function Go Back to Mark from the menu Edit, History one can easily undo the operations up to the mark.

The mark is not saved on the drawn alignment object in the drawing. To save different alternatives of the alignment use the option Alternative.

Horizontal Operation

Gives a short description of the operation performed on the horizontal alignment.

Vertical Operation

Gives a short description of the operation performed on the vertical alignment.

User comment

Text field. Double click in the field for user comments and enter text. User comment is saved in connection to the alternative that is saved on the drawn horizontal alignment.

Use the shortcut menu to set a mark, select as an alternative, or insert a user comment to the highlighted step.

Input V

This table is predominantly in accordance with the horizontal alignment input data. In this table information, which is different from the horizontal input data (Input H), is described.

Horizontal Length

Arcs can be declared with a horizontal length instead of a radius. If a new length is entered in this column it overrules the radian/radius that is calculated. If the length is no longer going to rule, enter 0 (zero) in the column for length or a new value for the radius can be entered.

K Value

K value is the input value for the vertical curves (sag or summit).

Slope (%, ‰ or 1:S)

Entering a value in the slope column can lock the line's slope. The value, which is entered, is dependent on the set-up chosen for the slope presentation. When the slope is determined the direction of the slope must be set.

Slope direction

If a slope direction is set, one of the fixed points is locked to the fixed element. The second fixed point is calculated in accordance with the locked fixed point and set slope. Thus only fixed elements can have a set slope.

Chainage, Elevation

The fixed point's coordinates are declared with Chainage and Elevation instead of X, Y. The fixed point is in relation to X, Y in plane (view) even though the horizontal geometry’s length is changed, the vertical geometry’s fixed points are still in plane (view). The vertical alignment is recalculated in accordance to the new horizontal alignment length.

Result V

Displays the result of the latest alignment calculation, which was successful. This table cannot be edited. The editing can be done in Input V.