Rehab and Cross Slope Optimization Subassemblies

Use these subassemblies to rehabilitate roads and/or optimize the cross slope of roads.

Generally speaking, these rehab and cross slope optimization subassemblies provide an easier way to perform rehab design and analysis in your rehab corridor optimization workflows. These subassemblies are designed to help you determine ideal design lane cross slope outputs through improved flapping calculations, and have additional parameters that other overlay subassemblies do not.

You may notice the term "flapping" being used in Overlay Slope Options for these subassemblies. Flapping in this case is a term used to describe how the Corrected Cross Slope for the overlay layer in a rehab subassembly is calculated. Flapping outcomes are different, relative to the slope tolerance and the slope difference between existing ground cross slope and ideal cross slope.

• 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 (slope tolerance is exceeded), then the use case is considered "outside of tolerance".

Note: For information about changes made to the behavior of some of the overlay slope options in the rehab subassemblies, see Updates to the Corridor Rehab Subassemblies.

Note: Rehab subassemblies will show the same default values in the Civil Imperial Subassemblies and Civil Metric Subassemblies when you preview them in the Properties palette, regardless of which units of measurement used by your drawing. However, the appropriate metric or imperial values will be displayed in the Rehab Parameters palette depending on the units of measurements used in your drawing.

Image	Subassembly	Common Uses
	OverlayLevelCrown Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with leveling on a crowned roadway.
	OverlayLevel1Lane1Side Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with leveling on an uncrowned roadway.
	OverlayMillCrown Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with milling on a crowned roadway.
	OverlayMill1Lane1Side Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with milling on an uncrowned roadway.
	OverlayMillLevel1Lane1Side Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with milling and leveling on an uncrowned roadway.
	OverlayMillLevelCrown Default Tool Palettes: Civil Metric Subassemblies, Civil Imperial Subassemblies	Overlay with milling and leveling on a crowned roadway.