Rehab Parameters Palette Reference

This palette lets you assign lane inputs and properties to a rehab corridor, edit the rehab input parameters in the properties table and apply your modifications to the selected rehab corridor region .

If you're creating a new rehab corridor, once you apply your rehab parameters to your rehab corridor, Autodesk Civil 3D will automatically build the assembly for your rehab corridor and will automatically assign the appropriate rehab and/or crossfall optimisation subassemblies to your rehab corridor regions. If you're editing an existing rehab corridor, any modifications you make to the Rehab Parameters will update the rehab corridor and the the cross section, profile and plan views, once you click Apply.

Lane Input

Number of Left Lanes

Specifies the number of lanes on the left side of the road.

Number of Right Lanes

Specifies the number of lanes on the right side of the road.

Lane Property

Lane Property

Use the drop-down menu to select a lane and inspect its parameters. You can also navigate between lanes using the left and right arrows .

Lane Parameters

Refer to the appropriate Rehab and Crossfall Optimisation Subassembly Reference for more information about Lane Parameter properties.

Ideal Crossfall

The desired crossfall (%) for the finished ground profile.

Overlay Slope Options

Specifies user defined overlay slope options. Specifies right and left overlay slope options

Tip: Flapping is a term used to describe how the Corrected Crossfall for an overlay in a rehab subassembly is calculated. Flapping outcomes are different, relative to the Slope Tolerance and the Slope Difference between existing ground crossfall and ideal crossfall. If the Slope Difference is less than the Slope Tolerance for the subassembly, then the use case is considered 'within tolerance'. If the Slope Difference is greater than the Slope Tolerance for the subassembly, then the use case is considered 'without tolerance'.

Note: Slope Tolerance is an absolute value. Therefore, for either a Slope Difference of 0.4% or -0.4%, both have an absolute value of 0.4%. If the Slope Tolerance is 0.5%, the 0.4% absolute Slope Difference would be considered within tolerance.

• User Defined with Flapping
  Flapping specifies how the Corrected Crossfall will be calculated, relative to the slope tolerance for the subassembly

  • Flapping Within Tolerance:

    Corrected Crossfall will be set as close as possible to the Existing Ground Crossfall and will also attempt to meet Minimum Level Depth

  • Flapping Without Tolerance:

    Corrected Crossfall will be set as close as possible to the Existing Ground Crossfall within Slope Tolerance

• User Defined Without Flapping
  Flapping specifies how the Corrected Crossfall will be calculated, relative to Slope Tolerance for the subassembly

  • Flapping Within Tolerance:

    Corrected Crossfall will be set equal to Ideal Crossfall

  • Flapping Without Tolerance:

    Corrected Crossfall will be set as close as possible to the Ideal Crossfall, within Slope Tolerance.

• Outside/Inside Lane Superelevation
  Outside or Inside Lane Superelevation will replace Ideal Crossfall. Corrected Crossfall values for the overlay layer will be defined by the superelevation table for the section instead of the Ideal Crossfall.

  Note: If Outside/Inside Lane Superelevation is chosen but not the alignment for the rehab corridor doesn't have a superelevation table defined, a warning will appear in the Events viewer and Ideal Crossfall will be set to 0.
• Match Slope

  The Corrected Crossfall is always set equal to Existing Ground Slope

• Use Ideal Crossfall

  The Corrected Crossfall Slope is always set equal to Ideal Crossfall

Inside Edge of Lane Offset

The offset of the start point from the attachment point for calculating existing ground slope.

Inside Edge of Lane Offset Target

The offset of the start point from the attachment point for calculating existing ground slope.

Lane Width

The distance between the inside edge of lane and the outside edge of lane.

Lane Width Target

The object defining the distance between the inside edge of lane and the outside edge of lane. The following object types can be used as targets for specifying this offset: alignments, polylines, feature line survey figures.

Design Lane Width same as Existing Lane

• Yes

  Specifies that the design lane width is the same as existing lane width

• No

  Specifies that the design lane width is not the same as existing lane width

  Note: If No is selected, the Inside Edge of Existing Lane and Outside Edge of Existing Lane parameters will not be applied to the subassembly

Inside Edge of Existing Lane Offset

The offset of the inside edge of existing lane from the attachment point.

Inside Edge of Existing Lane Offset Target

The object defining the inside edge of lane sample point offset. This will be used to calculate the existing surface slope. The following object types can be used as targets for specifying this offset: alignments, polylines, feature line survey figures.

Outside Edge of Existing Lane Offset

The offset of the outside edge of existing lane from the attachment point.

Outside Edge of Existing Lane Offset Target

The object defining the outside edge of lane sample point offset. This will be used to calculate the existing surface slope. The following object types can be used as targets for specifying this offset: alignments, polylines, feature line survey figures.

Rehab Input

Crossfall Correction

All Lanes Use Same Ideal Crossfall

• Yes
  The same Ideal Crossfall value will be applied to all lanes.

  Note: if you select this option, the Ideal Crossfall Lane Parameter for an existing rehab corridor region will become read-only.
• No

  Assign ideal crossfalls to individual lanes.

Ideal Crossfall

The desired crossfall (%) for the finished ground profile.

Slope Tolerance

Specifies the maximum change to the existing ground profile crossfall (%) that you want to design for.

Use Superelevation

If you Use Superelevation, Ideal Crossfall will be defined by the superelevation value for the chainage, as defined by the superelevation table for the alignment.

Vertical Adjustment

Mill and Level Type

The type of milling and levelling layer.

Overlay Depth

The depth of the overlay layer.

Minimum Level Depth

The minimum depth of the levelling layer.

Minimum Mill Depth

The minimum depth of the milling layer.

Apply

Applies your Rehab Parameters to the selected rehab corridor region and updates the cross section view for the selected chainage.