Drainage feature (Subsidence Overlay): Difference between revisions
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* A drainage is active when the Drainage value is larger than 0. In this case, the drainage always sets the ground water level to the same relative depth. The drainage value indicates the relative depth of the ground water. | * A drainage is active when the Drainage value is larger than 0. In this case, the drainage always sets the ground water level to the same relative depth. The drainage value indicates the relative depth of the ground water. | ||
* A drainage is passive when the Drainage value is smaller than 0. In this case, depending on which ground water level is used (high or low), the water level is additionally | * A drainage is passive when the Drainage value is smaller than 0. In this case, depending on which ground water level is used (high or low), the water level is additionally adjusted by the [[Hi passive drainage (Subsidence Overlay)|high]] or [[Low passive drainage (Subsidence Overlay)|low passive drainage]] value configured for the [[Subsidence Overlay]]. In this case, the actual negative value of the drainage does not matter. | ||
|seealso= | |seealso= | ||
* [[Ground_water_depth_formula_(Subsidence_Overlay)|Ground water depth formula]] | * [[Ground_water_depth_formula_(Subsidence_Overlay)|Ground water depth formula]] | ||
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{{SubsidenceOverlay feature attribute nav}} | {{SubsidenceOverlay feature attribute nav}} | ||
Revision as of 10:48, 10 February 2021
| Icon | Key | Unit | Range | Description | Default value |
|---|---|---|---|---|---|
 |
DRAINAGE | m + datum | The Drainage value has several behaviors, depending on its value. See the behavior description below. | -1.0 |
Notes
- A drainage is active when the Drainage value is larger than 0. In this case, the drainage always sets the ground water level to the same relative depth. The drainage value indicates the relative depth of the ground water.
- A drainage is passive when the Drainage value is smaller than 0. In this case, depending on which ground water level is used (high or low), the water level is additionally adjusted by the high or low passive drainage value configured for the Subsidence Overlay. In this case, the actual negative value of the drainage does not matter.
See also
- Group
- Model
- Drainage
- Related