Table Editor
Makes modifications to geometry using a tabular format.
Access this tool from the following:
Edit Horizontal Geometry Using Table Editor
Workflow
- Select Table Editor.
- When the Locate Alignment
prompt displays datapoint to select an alignment.
The Alignment Table Editor dialog displays.
- Insert and delete PIs using the Complex by PI tool.
- Select row, right click and
select from the menu: Insert Before, Insert After, or Delete.
Each element highlights as you select each row.
- Each field is editable.
Enter value and tab or enter to accept.
Temporary graphics display.
- Select the Apply button to
apply the modified value to the alignment.
The data is now ready for review.
- Select Report to display Horizontal Alignment Review Report in the Report Browser.
- Specify another stylesheet to display, if desired.
- Select Spiral Input to select from the menu: Length, A Parameter, or RL Value.
- Apply to accept modifications.
Table Editor dialog
Setting |
Description |
Station |
Reference points along the route or baseline at regular intervals. All distances are measured along the route from the alignment starting reference station. |
Back Tangent Length |
The length of the tangent line before the beginning of the curve. |
Back Bearing |
Direction of the back tangent specified by an angle between the tangent line and the north-south axis. |
Back Spiral Length |
Length of spiral curve or gradual transition in curvature from the back tangent to the curve. |
Back Spiral A Parameter |
When RL values are quite large, some jurisdictions use the A-value. A-value is equal to the square root of RL. |
Back Spiral RL Value |
The spiral is defined by a parameter equal to the radius multiplied by length. |
Northing |
Y coordinate. |
Easting |
X coordinate. |
Radius |
Radius of the circular arc or curve. |
Arc Length |
Distance from the PC (Point of Curvature where the curve begins) to the PT (Point of Tangency where the curve ends) measured along the curve. |
Design Speed |
Speed of element set by design standard. |
Ahead Spiral Length |
Length of spiral curve or gradual transition in curvature from the curve to the ahead tangent. |
Ahead Spiral A Parameter |
When RL values are quite large, some jurisdictions use the A-value. A-value is equal to the square root of RL. |
Ahead Spiral RL Value |
The spiral is defined by a parameter equal to the radius multiplied by length. |
Ahead Bearing |
Direction of the ahead tangent specified by an angle between the tangent line and the north-south axis. |
Ahead Tangent Length |
The length of the tangent line after the end of the curve. |
Report button |
Displays the Horizontal Alignment Review Report in the Report Browser. |
Spiral Input |
Select from Length, A Parameter or RL Value. |
Edit Vertical Geometry Using Table Editor
Workflow
- Locate alignment .
- Datapoint to accept.
Profile Table Editor dialog displays.
- Select row, right click and
select from the menu: Insert Before, Insert After, or Delete.
Each element highlights as you select each row.
- Each field is editable.
Enter value and tab or enter to accept. You can lock the values.
Temporary graphics display.
- Select the Apply button to
apply a modified value to the vertical alignment.
The data is now ready for review.