This subassembly inserts a link that daylights to a target surface at a user-defined cut or fill slope.
If necessary, the slope is adjusted to keep the daylight point beyond a minimum offset from the baseline.
You can also specify optional lined materials for daylight and other links (All Links, Daylight Links, Fill Links Only, and None).
Attachment
The attachment point is at the hinge point of the daylight link. This component can be attached to either the left or right side.
Input Parameters
Note: All dimensions are in meters or feet unless otherwise noted. All slopes are in run-over-rise form (for example, 4 : 1) unless indicated as a percent slope with a “%” sign.
|
Parameter |
Description |
Type |
Default |
|---|---|---|---|
|
Side |
Specifies which side to place the subassembly |
Left / Right |
Right |
|
Cut Slope |
The slope for normal daylighting in cut conditions |
Numeric, positive |
4 ( : 1) |
|
Fill Slope |
The slope for normal daylighting in fill conditions |
Numeric, positive |
4 ( : 1) |
|
Min Offset from Baseline |
The minimum allowable offset for the daylight point |
Numeric |
3.0 m 10.0 ft |
|
Rounding Option |
Specifies to round off the daylight link at the catch point |
String |
None |
|
Rounding By |
Specifies what parameter is used for rounding |
String |
Length |
|
Rounding Parameter |
Specifies value for length or radius |
Numeric, positive |
1.500 ft |
|
Rounding Tesselation |
Specifies number of intermittent points on rounding links (maximum 10 links) |
Numeric, positive |
6 |
|
Place Lined Material |
Specifies to place optional material lining along daylight links. You can choose All Links, Daylight Links, Fill Links Only, and None. |
String |
None |
|
Slope Limit 1 |
Specifies the slope limit until which the associated material lining is placed |
Slope |
1 : 1 |
|
Material 1 Thickness |
Specifies the thickness of lined material. This thickness is measured perpendicular to the link. |
Numeric, positive |
12 inches |
|
Material 1 Name |
Specifies the name of the material applies for lining along grading links |
String |
Rip Rap |
|
Slope Limit 2 |
Specifies the slope limit until which the associated material lining is placed |
Slope |
2 : 1 |
|
Material 2 Thickness |
Specifies the thickness of lined material. This thickness is measured perpendicular to the link. |
Numeric, positive |
6 inches |
|
Material 2 Name |
Specifies the name of the material applies for lining along grading links |
String |
Rip Rap |
|
Slope Limit 3 |
Specifies the slope limit until which the associated material lining is placed |
Slope |
4 : 1 |
|
Material 3 Thickness |
Specifies the thickness of lined material. This thickness is measured perpendicular to the link. |
Numeric, positive |
4 inches |
|
Material 3 Name |
Specifies the name of the material applies for lining along grading links |
String |
Seeded Grass |
Target Parameters
This section lists the parameters in this subassembly that can be mapped to one or more target objects. For more information, see To Specify Corridor Targets.
|
Parameter |
Description |
Status |
|---|---|---|
|
Min Offset |
May be used to override the fixed Min Offset and tie the minimum offset to an offset alignment. The following object types can be used as targets for specifying the offset: alignments, polylines, feature lines, or survey figures. |
Optional |
|
Daylight Surface |
Name of the daylighting surface. The following object types can be used as targets for specifying the surface: surfaces. |
Required |
Output Parameters
|
Parameter |
Description |
Type |
|---|---|---|
|
Daylight Offset |
Offset of the daylight point |
Numeric |
|
Daylight Elevation |
Elevation of the daylight point |
Numeric |
Behavior
This subassembly attempts to calculate a daylight point for the cut condition. If a daylight point is found, its offset is compared to the Min Offset value. If the daylight point is within the Min Offset, the daylight point is moved to the minimum offset point on the target surface. If no cut daylight point is found, the process is repeated for the fill condition.
If an offset horizontal alignment name is assigned to the Min Offset during corridor modeling, the value of the Min Offset will vary to match the offset of the alignment.
Like other daylight subassemblies, this subassembly optionally lets you add a lined material. You can specify three ranges of slopes. Material type 1 is applied if the slope of the links is up to the specified slope value. From slope 1 to slope 2, the second type of material applied. Similarly, if the slopes of links fall within slope 2 and slope 3 values, then material 3 is applied. If the link slopes are flatter than slope limit 3, then no material is applied.
If a lined material is added to the subassembly, then parallel links are added to the daylight links with specified thickness. This thickness parameter (for example, Material 1 Thickness) is measured perpendicular to the link. Bottom level links are coded with Datum and daylight links are coded with Top. Shapes enclosed by these materials are coded with material name.
In Autodesk Civil 3D 2010 and previous versions, the Material Thickness parameter was measured vertically. In Autodesk Civil 3D 2011 and later, this parameter is measured perpendicular to the link. Therefore, if you open a drawing containing these subassemblies that was created in Autodesk Civil 3D 2010 or prior in Autodesk Civil 3D 2011 or later, and then rebuild the corridor(s), this parameter will be changed to reflect the new behavior. Any volume reports that use this subassembly will be updated to reflect the new behavior.
Layout Mode Operation
In layout mode, this subassembly displays both the cut and fill slopes in dashed lines extended outward for the Min Offset distance. The daylight links are terminated with arrowheads pointing outwards.
Point, Link, and Shape Codes
The following table lists the point, link, and shape codes for this subassembly that have codes assigned to them. Point, link, or shape codes for this subassembly that do not have codes assigned are not included in this table.
|
Point, Link, or Shape |
Code |
Description |
|
P1 |
Hinge Hinge_Cut or Hinge_Fill |
Hinge point, either for the cut or fill condition |
|
P2 |
Daylight Daylight_Cut or Daylight_Fill |
Daylight point, and daylight point for either the cut or fill condition |
|
L1 |
Top Datum |
|
|
L1 |
Top Datum Daylight Daylight_Cut |
Daylight link for cut section |
|
L1 |
Top Datum Daylight Daylight_Fill |
Daylight link for fill section |
Coding Diagram
