OverlayMillCrown

Attachment

The attachment point is the crown point of the overlay layer with finished ground crossfall.

Input Parameters

Note: Note: All dimensions are in metres or feet unless otherwise noted. All slopes are in run-over-rise form unless indicated as a percent slope with a "%" sign.

Parameter	Description	Type	Default
Crown Offset	Positive or negative offset of the crown point.	Numeric	0.000m (0.000 ft)
Crown Use Profile Options	Select to tie the inside edge of the overlay crown point to a profile, or adjust crown point level to meet minimum mill depth.	User defined	Minimum Mill Depth
Design Lane Width same as Existing Lane Width	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.	User defined	No
Inside Edge of Existing Left Lane	This is the start point for calculating existing ground slope for the left lane.	Numeric	0.000m (0.000 ft)
Inside Edge of Existing Right Lane	This is the start point for calculating existing ground slope for the right lane.	Numeric	0.000m (0.000 ft)
Outside Edge of Existing Left Lane	This is the end point for calculating existing ground slope for the left lane.	Numeric	12.000m (12.00 ft)
Outside Edge of Existing Right Lane	This is the end point for calculating existing ground slope for the right lane.	Numeric	12.000m (-12.000 ft)
Overlay Depth	Depth of the overlay layer.	Numeric, positive	0.600m (0.600 ft)
Right and Left 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 the alignment for the rehab corridor doesn't have a superelevation table defined, Ideal Crossfall will be used instead. 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	User defined	User Defined Without Flapping
Left Ideal Crossfall	Specifies user defined left ideal crossfall.	Numeric, negative	-2.00%
Left Minimum Mill Depth	The minimum mill depth between the existing surface and the bottom of the left overlay layer.	Numeric, positive	0.300m (0.300 ft)
Left Slope Tolerance	Tolerance for varying the left overlay slope.	Numeric	0.50%
Right Ideal Crossfall	Specifies user defined right ideal crossfall.	Numeric, negative	-2.00%
Right Minimum Mill Depth	The minimum mill depth between the existing surface and the bottom of the left overlay layer.	Numeric, positive	0.300m (0.300 ft)
Right Slope Tolerance	Tolerance for varying the left overlay slope.	Numeric	0.50%
Left Lane Width	The left lane width, determined by the offset of the outside edge of the left lane from the inside edge of left lane.	Numeric, negative	-12.000m (-12.000 ft)
Right Lane Width	The right lane width, determined by the offset of the outside edge of the right lane from the inside edge of right lane.	Numeric, positive	12.000m (12.000 ft)

Output Parameters

Parameter	Description	Type	Default
Left Corrected Crossfall	This is the adjusted crossfall for the left side of the road, which has been optimised to match, as closely as possible, the rehab subassembly parameters you specified.	Numeric	-2.00%
Right Corrected Crossfall	This is the adjusted crossfall for the right side of the road, which has been optimised to match, as closely as possible, the rehab subassembly parameters you specified.	Numeric	-2.00%
Left Existing Ground Slope	The crossfall (%) of the existing ground profile for the left lane, calculated from the inside edge of the left lane to the outside edge of the left lane.	Numeric	percentage
Right Existing Ground Slope	The crossfall (%) of the existing ground profile for the right side of the road, calculated from the inside edge of the right lane to the outside edge of the right lane.	Numeric	percentage

Target Parameters

Parameter	Description	Required?
Target Surface	Name of the surface defining the existing carriageway	Yes
Crown Offset Target	Name of the object defining the offset of the crown point. The following object types can be used as targets for specifying this offset: alignments, polylines, feature lines or survey figures.	No
Left Lane Width Target	Name of the object defining the offset of the outside edge of left lane . The following object types can be used as targets for specifying this offset: alignments, polylines, feature lines or survey figures.	No
Right Lane Width Target	Name of the object defining the offset of the outside edge of right lane . The following object types can be used as targets for specifying this offset: alignments, polylines, feature lines or survey figures.	No
Left Inside Edge of Existing Lane Offset Target	Name of the object defining the left inside sample point offset 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 lines or survey figures.	No
Left Outside Edge of Existing Lane Offset Target	Name of the object defining the left outside sample point offset 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 lines or survey figures.	No
Right Inside Edge of Existing Lane Offset Target	Name of the object defining the right inside sample point offset 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 lines or survey figures.	No
Right Outside Edge of Existing Lane Offset Target	Name of the object defining the right outside sample point offset 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 lines or survey figures.	No

Behaviour

This subassembly assumes that no levelling layer is added. Flapping must be within tolerance to meet minimum mill. The level at the crown will meet both sides.

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	Crown	Crown point for top of overlay
P2, P3	EOV	Overlay edges on finished gradient for the left and right side of the road
P4	Crown_Overlay	Crown point for bottom of mill
P5, P6	EOV_Overlay	Edges of bottom of mill for the left and right side of the road
P7, P8	EOV_Milling	Edges of top of mill for the left and right side of the road
P9	Crown_offset	Offset of the crown point from attachment point.
L1, L2	Top, Pave	Top of overlay for left and right side of road
L3, L4, L5, L6	Overlay	Links for the overlay layer.
L7, L8	Mill	Mill links (height) for left and right side of road
S1	Overlay	Area between the top and bottom of overlay
S2	Mill	Area between the top and bottom of mill