This reference page lists the required parameters for parametric Drainage Structure components.
About Parameters
To model parametric parts in Autodesk Inventor, your 2D sketches and 3D extrusions must be constrained by geometric dimensions. All of these geometric dimensions, also known as constraints, are displayed in the Parameters dialog in Autodesk Inventor. You can create new parameters, rename existing parameters, and change the value of an existing parameter by editing the sketch dimension or the feature. You can also modify parameters and their values using the Parameters dialog. All the parameters that you configure for a part in Autodesk Inventor are included in a
XML file when you use the Infrastructure Part Shape Utilities tools to export a shape template.
Note: The
XML parameters file is required when you import a shape template into the Infrastructure Parts Editor or the InfraWorks Style Palette.
You can define parameters in Inventor as numeric parameters, text parameters, or true/false parameters, although only numeric parameters support expressions. You can also use parameters to run equations and iLogic rules in Autodesk Inventor. However, when creating parametric content for civil infrastructure design in Autodesk InfraWorks and
Autodesk Civil 3D, you will primarily use numeric parameters to define dimensions for your parts.
Tip: If you use the same parameters in many parts, you can create a template file that contains those parameters. Save your parameter template files in the Inventor Template folder to use your templates when creating new part files.
Required parameters
The content that you create in Autodesk Inventor for use in Autodesk InfraWorks and Autodesk Civil 3D has different required parameters depending on the content domain category and part class. If you open an existing part from the library, navigate to the Part Editing tab. In the Part Editing table, look for any column that has a "*" or a "**" prefix. The single asterisk "*" indicates that a parameter is a geometry parameter that is required, and has been marked as a 'key' parameter in Autodesk Inventor. The double asterisk "**" indicates that parameter is based on a calculation or iLogic. Any parameter with a single asterisk will also have a tooltip explaining the parametric value if you hover your cursor over the column header. Based on the domain and part class, you may need to configure different key parameters in Autodesk Inventor for your parametric bridge components, road decorations, tunnel sections, drainage structures, and piping assemblies. For example, PierHeight is a required parameter for a valid parametric bridge pier model. If a user does not mark PierHeight as a key parameter in the Parameters dialog within Autodesk Inventor, the resulting pier model will not be supported in Autodesk InfraWorks.
| Parameter | Parametric Value | Required? | Notes |
|---|---|---|---|
| *FlangeTh | Base Flange Thickness | No | This is an optional parameter for circular and rectangular surface structures. |
| *SPDiameter | Underground Structure Port Diameter | Yes | This is a required parameter for circular surface structures. |
| *CGHeight | Height of grate (opening) | Yes | This is a required parameter for circular and rectangular surface structures. |
| *CG Diameter | Diameter of grate (opening) | Yes | This is a required parameter for circular surface structures. |
| *WallTh | Wall thickness of Inlet | Yes | This is a required parameter for circular and rectangular surface structures. |
| *SSHeight | Height of Inlet | Yes | This is a required parameter for circular and rectangular surface structures. |
| *SSDiameter | Diameter of Inlet | Yes | This is a required parameter for circular surface structures. |
| *CrossSlope | Roadway Cross Slope | No | This is an optional parameter for circular and rectangular surface structures. |
| *GutterSlope | Roadway Gutter Slope | No | This is an optional parameter for circular and rectangular surface structures. |
| InletOpenWidth | Curb Inlet Opening Length | No | This is an optional parameter for inlets that have curb-openings used to set the length of the opening along the curb. |
| InletOpenHeight | Curb Inlet Opening Height | No | This is an optional parameter for inlets that have curb-openings used to set the height of the opening. |
Note: Some additional parameters may also be needed, depending on the type of surface structure. For example:
- *SP prefixes indicate that a structure port parameter is used to match the surface structure to circular or rectangular underground structures in an assembly.
- SPLength and SPWidth is required to match the surface structure to underground structures.
- CG* is used to match the surface structure to circular or rectangular covers or grates.
- SSLength & SSWidth are required parameters for rectangular surface structures.
| Parameter | Parametric Value | Required? | Notes |
|---|---|---|---|
| **SPDiameter | Structure Port Diameter (Circular Underground Structures) | Yes | This is a required parameter for circular underground structures. If not set, this value is calculated from USDiameter. This is an optional parameter for rectangular underground structures, unless this underground structure needs to match to a circular surface structure. |
| **USRiserHeight | Riser Height (calculated)(Rectangular Underground Structures) | No | This is an optional parameter for rectangular underground structures. If not set, this value is calculated from USHeight - USBaseHeight.
Note: This parameter is required if the part assembly has a Riser.
|
| *SPDiameter | Structure Port Diameter (Rectangular Underground Structures) | No | This is a required parameter for circular underground structures. This is an optional parameter for rectangular underground structures, unless this underground structure needs to match to a circular surface structure. |
| *WallTh | Wall Thickness of Underground Structure | Yes | This is a required parameter for circular and rectangular underground structures. |
| *BaseTh | Base Thickness of Underground Structure | Yes | This is a required parameter for circular and rectangular underground structures. |
| *USHeight | Height of Underground Structure | Yes | This is a required parameter for circular and rectangular underground structures. |
| *USDiameter | Total Diameter of Structure | Yes | This is a required parameter for circular underground structures. |
| *USBaseHeight | Base Height (region where pipes connect) | No | This is an optional parameter for rectangular underground structures.
Note: This parameter is required if the part assembly has a Riser.
|
| *USWidth | Total Width of Structure | Yes | This is a required parameter for rectangular underground structures. |
| *USLength | Total Length of Structure | Yes | This is a required parameter for rectangular underground structures. |
| USTransitionHeight | Transition Section Height | No | This is an optional parameter for structures that have a transition section (e.g. concentric or eccentric cone) used to set the height of the section. |
Note: Some additional parameters may also be needed, depending on the type of underground structure. For example:
- *SP prefixes indicate that a structure port parameter is used to match the surface structure to circular or rectangular underground structures in an assembly.
- SPLength and SPWidth are required parameters for rectangular underground structures, and are used to match the underground structure to the surface structure.
- SSLength & SSWidth are required parameters for rectangular surface structures.
| Parameter | Parametric Value | Required? | Notes |
|---|---|---|---|
| *CGDiameter | Diameter of Cover | Yes | This is a required parameter for circular covers and grates. |
| *CGHeight | Height of Cover | Yes | This is a required parameter for circular and rectangular covers and grates. |
| *CGWidth | Width of Cover | Yes | This is a required parameter for rectangular covers and grates. |
| *CGLength | Length of Cover | Yes | This is a required parameter for rectangular covers and grates. |
| Parameter | Parametric Value | Required? | Notes |
|---|---|---|---|
| *HBarrelSpacing | Headwall Barrel Spacing | Yes | This is a required parameter for end treatments |
| *WWTopLength | Wing Wall Top Length | Yes | This is a required parameter for end treatments |
| *WWFrontHeight | Wing Wall Front Height | Yes | This is a required parameter for end treatments |
| *FlareAngle | Flare Angle | Yes | This is a required parameter for end treatments |
| *WWLength | Wing Wall Length | Yes | This is a required parameter for end treatments |
| *HThickness | Headwall Thickness | Yes | This is a required parameter for end treatments |
| *HBarrelOffset | Headwall Barrel Offset | Yes | This is a required parameter for end treatments |
| *HBaseHeight | Headwall Base Height | Yes | This is a required parameter for end treatments |
| *HHeight | Headwall Height (Overall) | Yes | This is a required parameter for end treatments |
| *HWidth | Headwall Width | Yes | This is a required parameter for end treatments |