This subassembly inserts links to create a basin and cut daylight slope for a cut condition, or a basin, berm, and fill slope for a fill condition.
The final daylighting link can be omitted in cases where the corridor model needs to be left in an incomplete state. For example, this might be done so that grading surfaces on adjacent properties can tie to the hinge point on the uncompleted roadway.
You can also specify optional lined materials for daylight and other links (All Links, Daylight Links, Fill Links Only, and None).
The attachment point is at the inside edge of the basin foreslope. This component can be attached to either the left or right side.
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.
This section lists the parameters in this subassembly that can be mapped to one or more target objects. For more information, see in the AutoCAD Civil 3D User’s Guide Help.
The subassembly builds the links for the basin foreslope and basin out to the basin test point. If a profile is given, the width of the foreslope varies to hold to the basin profile, while the basin depth is held constant. If the basin test point is in cut, the daylight intercept is calculated on the target surface at the given Cut Slope. If it is in fill, a top-of-berm link is added, and the daylight intercept is calculated on the target surface at the given Fill Slope. The daylight link is not inserted if Omit Daylight Link is set to True. If the top-of-berm link intersects the target surface, the section is terminated at the intersection.
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 AutoCAD Civil 3D 2010 and previous versions, the Material Thickness parameter was measured vertically. In AutoCAD 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 AutoCAD Civil 3D 2010 or prior in AutoCAD 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.
In layout mode, this subassembly draws the foreslope, basin sideslopes, and basin bottom with the given input parameter values. Both the cut and fill condition links are shown in dashed lines, with the daylight links extended outward for a width of 3 meters or 10 feet at the given slopes. The daylight links terminate in arrowheads pointing outwards.
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.
