Creating grade limits automatically
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Command |
Workspace: Path |
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Create Grade Limits from Pad |
Design Suite: AEC > Terrain Landmark: Landmark |
Because grade limits are often associated with a pad or other type of site modifier, the Vectorworks Landmark product can create grade limits automatically around a site modifier, based on specific parameters. Grade limits can be created with a gradual sloping transition from the existing site contours to the modifier, placed at a variable or fixed distance from the modifier. The grade limits cut and fill the site model to create a constant slope (batter slope).
To create grade limits automatically around one or more site modifiers:
Select the site modifiers which require the grade limits. Valid modifiers include pads, road objects, massing models, and landscape walls.
Select the command.
The Create Grade Limits from Pad dialog box opens. Select the grade limit parameters.
Click to show/hide the parameters.Click to show/hide the parameters.
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Parameter |
Description |
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Grade Limits Offset Control |
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Distance |
Creates the grade limits at a fixed offset distance |
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Batter Slope |
Creates variable offset grade limits based on slope (the slope variation determines the offset; the grade limits are located at the intersection of the slope and the existing terrain) |
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Max. Offset |
Sets the fixed offset distance for Distance offset control, or specifies the maximum offset distance allowed for Batter Slope offset control |
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Slope Definition |
For Batter Slope offset control, select the method of specifying the slope value: Angular: specifies the slope in degrees, radians, or gradians (example: 26.7°) Rise-over-run: specifies the slope as a ratio of vertical change to horizontal change (example: 1:3) Percent: specifies the slope as a grade percentage (example: 50%) |
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Max. Slope |
For Batter Slope offset control, specifies the maximum allowable slope (in the selected units) |
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Slope Control Options |
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Use Midpoints |
Enables additional testing points for a more uniform slope |
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Test Increment |
Specifies the number of midpoints to test; a smaller increment distance increases the accuracy of the slope calculations, but can also increase the time to create the grade limits (the minimum increment is 12”) |
To reflect the grade limit modification, select the site model and click Update from the Object Info palette.
