Most machine installations have only a single GPS receiver. This single receiver can only supply a position and elevation at the position of the receiver.
ReferenceSystems Operation, "As-built Surface Update" explains the methods that are used by CAESultra to both determine the cells that are updated and the current elevation for the cells.
Most of the CAESultra default machine configurations are set up to record and to display current elevation as-built surfaces.
Swath Option - Used to choose the machine offset, the as-built type, and the swath point function.
Data File Param - Used to both create and to identify the current elevation as-built surface file.
Additional information in the setting specifies the format, such as the storage type, the cell size and the block size.
CAESultra can present current elevation information as either a map showing current elevation only, or as a map that shows the difference between the current elevation and a design.
Elevation Current Plan
The elevation current plan is of limited value. The color code used for the plan, which shows current elevation only, cannot be configured for CAESultra.
CAESultra automatically determines a grayscale range for the current elevation map. The extents of the grayscale range are determined at the time that the map is created. The range is based on the range of current elevations within the current elevation file at the time that the map was created.
The default background color is blue. If there are no current elevations in the file when the map is created, then only black cells are used when the plan updates.
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| Illustration 1 | g01193453 |
Elevation Current plan | |
Grade Plan
The Grade plan compares current elevation in the current elevation file with design elevation. The difference in the two elevations is shown on the grade plan.
Illustration 2 shows a color-coded grade plan. Table 1 lists the description for the various colors.
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| Illustration 2 | g01193465 |
Grade Plan | |
| Callout | Color | Description |
|---|---|---|
| 1 | Red | Current elevation is above design elevation |
| 2 | Light red shades | Lighter red shade as current elevation decreases down to the design elevation |
| 3 | Green | Current elevation is within design elevation tolerance |
| 4 | Light blue shades | Lighter blue shade as current elevation increases up to the design elevation |
| 5 | Blue | Current elevation is below design elevation |
| 6 | Magenta | No design elevation available |
The digital window can be set up to have a background that shows color coded cut and fill. Each of the Gauge, Grade, and Digital windows can have different tolerances.
The following three settings are used with the Grade plan
Cut Color - Used to modify the default color
Fill Color - Used to modify the default fill color
On Grade Tolerance - Specifies the overall tolerance for CAESultra
The color code for the Grade plan is determined when the Grade plan is created. The Grade Tolerance is used to specify the tolerance for design elevation. The slide control is used for the Color Range to control both the light red and the light blue color ranges.
Note: The grade tolerance that is specified when a grade plan is set up only applies to the current grade plan. The tolerance that is defined in this setting is always used by the digital windows and is used as the default tolerance for grade and gauge windows.