LnMkPt

Last updated: 2021-02-12

Subbassembly is used to insert a single or multiple surfaces between two known points. When a single surface only is inserted, used point and link codes for L1 Surface as shown in Point, Link, and Shape codes documentation.

All pavement, base course and the subgrade surfaces are inserted between two known points with the left known point used as the attachment point and with the right edge of the topmost surface being located at the Right Marked Point.If all depth inputs are set to 0.0, a single link is inserted between the two known points and use link code L1 and the point codes P1 and P2.

The attachment is left edge point of the uppermost link. The subassembly is attached between two known points denoting top of lane at finished grade; left point is the attachment point and right point is a previously marked point. Not necessary to specify a side, the attachment is always at the left known point.

In layout mode, this subassembly displays the link(s) using the given marked points and depths.

Info: All dimensions are in feet unless otherwise noted. All slopes are in run-over-rise form (for example, 4:1) unless indicated as a percent slope with a "%" sign.

Parameter Description Type Default
Crown Location Specifies whether to code left or right edge of travelway as Crown, or neither.

String, Combo List of options:

a.) Left,

b.) Right,

c.) None

None
Right Marked Point Name Specifies the right mark point name. String Right
Link Code Top Link A list of codes to be assigned to the top link. Comma-separated string Top, Pave
Pavement Depth Depth of pavement layer measured from the top of the pavement. Numeric, postiive 0.5 ft.
Base Depth Depth to the bottom of the first base course layer; zero if the distance to the bottom of the first base course layer is equal to the Depth to Subgrade. Measured from top of the pavement. Numeric, postiive 1.0ft
Subbase Depth Depth to the bottom of the Subbase layer; zero if the distance to the bottom of the subbase layer is equal to the Depth to Subgrade. Measured from the top of the pavement. Numeric, postiive 1.6 ft
Depth to Subgrade Depth to the Subgrade surface. This depth is measured from the top of the pavement surface. Numeric, postiive 2.0 ft.

None
Parameter Description Type
Pavement Slope Slope of the Pavement. Slope
Subgrade Slope Slope of the Subgrade Surface. Slope
Base Depth Base1 Depth at outer Edge computed by taking the difference between the elevation at ETW and ETW_Base1 Numeric
Subbase Depth Base2 Depth at outer Edge computed by taking the difference between the elevation at ETW and ETW_Base2 Numeric
Depth to Subgrade Depth to Subgrade Surface at outer Edge computed by taking the difference between the elevation at ETW and ETW_Sub Numeric
Offset of ETW_Sub_Left Offset of the left edge of the subgrade surface Numeric
Offset of ETW_Sub_Right Offset of the right edge of the subgrade surface Numeric
Elevation of ETW_Sub_Left Elevation of the left edge of the subgrade surface Numeric
Elevation of ETW_Sub_Right Elevation of the right edge of the subgrade surface Numeric
Offset of ETW_Left Offset of the outside edge of the top of pavement Numeric
Offset of ETW_Right Offset of the right edge of the top of pavement Numeric

Point/Link/Shape Codes Description
P1 Crown Crown point if designated by Crown Location (optional)
P2 Crown Crown point if designated by Crown Location (optional)
P3 Crown_Pave1 Crown point on the Pave1 layer if designated by Crown Location (optional)
P4 Crown_Pave1 Crown point on the Pave1 layer if designated by Crown Location (optional)
P5 Crown_Base1 Crown point on the Base1 layer if designated by Crown Location (optional)
P6 Crown_Base1 Crown point on the Base1 layer if designated by Crown Location (optional)
P7 Crown_Base2 Crown point on the Base1 layer if designated by Crown Location (optional)
P8 Crown_Base2 Crown point on the Base1 layer if designated by Crown Location (optional)
P9 Crown_Sub Crown point on the Base1 layer if designated by Crown Location (optional)
P10 Crown_Sub Crown point on the Base1 layer if designated by Crown Location (optional)
L1 Varies Set by Link Code Top Link parameter
L2 Pave1  
L3 Base1 Bottom of first Base surface
L4 Base2 Bottom of second Base surface
L5 Datum, SUBG, Subbase Subgrade surface
S1 Pave1  
S2 Base1  
S3 Base2  
S4 Subbase