Overlay Mill And Level 2

C3D OverlayMillAndLevel2 — the crowned two-lane mill and overlay

At a glance


Kind	Subassembly (composed into an assembly)
Domain	Road
Civil 3D equivalent	`OverlayMillAndLevel2`
Geometry	13 points, 9 links, 1 shapes
Targets	1 (surface / offset / elevation targets this subassembly can be linked to)

Parameters

Defaults are the metric values the palette inserts. Every parameter can be driven by an expression or a target.

Parameter	Type	Default	Meaning
`CrownPoint`	number (metres unless the description says otherwise)	0	Crown offset (m)
`LeftTrimPoint`	number (metres unless the description says otherwise)	0	Left trim offset (m)
`RightTrimPoint`	number (metres unless the description says otherwise)	0	Right trim offset (m)
`LeftSamplePoint`	number (metres unless the description says otherwise)	0	Left sample offset (m)
`RightSamplePoint`	number (metres unless the description says otherwise)	0	Right sample offset (m)
`LeftDefaultSlope`	cross slope as a ratio (−0.02 = 2 % fall)	-0.02	Left design slope when nothing is matched
`RightDefaultSlope`	cross slope as a ratio (−0.02 = 2 % fall)	-0.02	Right design slope when nothing is matched
`SlopeTolerance`	cross slope as a ratio (−0.02 = 2 % fall)	0.005	How close an existing slope must be to be kept
`MinimumClearance`	number (metres unless the description says otherwise)	0.1	Clearance milled under the overlay (m)
`OverlayDepth`	number (metres unless the description says otherwise)	0.1	Overlay thickness (m)
`OverlaySlopeMode`	whole number / mode selector	0	0 use the default slopes, 1 match the existing grade per side
`UseProfile`	whole number / mode selector	0	1 = anchor the crown at the attach instead of the minimum clearance

Points

Point codes are what feature lines, styles and quantity take-off match on — they are the contract this subassembly publishes.

Point	Code	Placed	From	Expression
`PC`	—	horizontal delta, elevation taken from the target surface	—	`CrownPoint / 0`
`TL`	—	horizontal delta, elevation taken from the target surface	—	`LeftTrimPoint / 0`
`TR`	—	horizontal delta, elevation taken from the target surface	—	`RightTrimPoint / 0`
`SL`	—	horizontal delta, elevation taken from the target surface	—	`LeftSamplePoint / 0`
`SR`	—	horizontal delta, elevation taken from the target surface	—	`RightSamplePoint / 0`
`P1`	Crown	placed at the attachment point (an absolute offset/elevation)	—	`CrownPoint / VC`
`P2`	EOV	offset + elevation delta from the reference point	P1	`(LeftTrimPoint-CrownPoint) / LDS*abs(LeftTrimPoint-CrownPoint)`
`P3`	EOV	offset + elevation delta from the reference point	P1	`(RightTrimPoint-CrownPoint) / RDS*abs(RightTrimPoint-CrownPoint)`
`P4`	Crown_Overlay	offset + elevation delta from the reference point	P1	`0 / 0-OverlayDepth`
`P5`	EOV_Overlay	offset + elevation delta from the reference point	P2	`0 / 0-OverlayDepth`
`P6`	EOV_Overlay	offset + elevation delta from the reference point	P3	`0 / 0-OverlayDepth`
`P7`	—	offset + elevation delta from the reference point	P5	`0 / if(ExistingSurface.IsValid>0.5,TL.Y-P5.Y,0-MinimumClearance)`
`P8`	—	offset + elevation delta from the reference point	P6	`0 / if(ExistingSurface.IsValid>0.5,TR.Y-P6.Y,0-MinimumClearance)`

Links

Link	Code	Between	Role
`L1`	Top,Pave	P2 → P1	drawn
`L2`	Top,Pave	P1 → P3	drawn
`L3`	Overlay	P3 → P6	drawn
`L4`	Overlay	P6 → P4	drawn
`L5`	Overlay	P4 → P5	drawn
`L6`	Overlay	P5 → P2	drawn
`L7`	Mill	P7 → P8	drawn
`L8`	Mill	P5 → P7	drawn
`L9`	Mill	P8 → P6	drawn

Shapes (materials)

Shape	Material code	Boundary points
`S1`	Overlay	P2, P1, P3, P6, P4, P5

Generated page. The tables above are read from the built-in catalogue itself (yu3d_stock_dump), so they always match the version of yucad3d you are running.