ShldGeneric - Version: 26.2

This subassembly inserts a paved and unpaved shoulder with all pavement, base, subbase, and subgrade improvement layers per WisDOT FDM 11-5-15 Select Materials in Subgrades. In addition, there is also the option to place three inches of ¾" aggregate on the shoulder foreslope from the bottom of the ¾" base layer adjacent to the paved shoulder to the subgrade shoulder point as shown in WisDOT FDM 14-5-10 Base Aggregate Dense. The subgrade width is established by maintaining a constant side slope between the finished shoulder point and the subgrade shoulder point of the cross section according to WisDOT FDM 11-15-1.10 Subgrade Side Slopes and Widths

Shoulder width

The shoulder is inserted using widths and thickness parameters provided. If the Unpaved width target offset is inside of the Paved width target, the Unpaved width is set to zero.

There are two options for targeting the paved and unpaved shoulder widths.

• The first option is to use a horizontal target.
• The second option is to use a profile target, where the profile elevations are interpreted as width values.

When both a horizontal and profile target is established, the profile target supersedes the horizontal target.

Pavement depth of adjacent lane

The Adjacent lane pavement thickness can either be manually entered to match the roadway pavement thickness (typically the Pave1 thickness in the LnExtendBase subassembly) or parameter referenced to match that value as well. The Adjacent lane pavement thickness cannot be less than the Pavement thickness parameter which defines the thickness of the paved shoulder. If the Adjacent lane pavement thickness input is less than the Pavement thickness input, the value will be set equal to the Pavement thickness. All base course thicknesses are measured vertically downward from the layer above. The ShldGeneric subassembly Base thickness is determined by whichever value is greater between the Adjacent lane pavement thickness and the Pavement thickness.

Methods of determining paved and unpaved shoulder slopes

Lane and shoulder superelevation rates and transitions associated with the alignment can be used to calculate the paved and/or unpaved shoulder slopes.

When Paved shoulder superelevation method and/or Unpaved shoulder superelevation method are set to User defined, the slopes of the paved and unpaved portion of the shoulder are controlled by the inputs for the Paved shoulder slope and/or Unpaved shoulder slope parameters, unless a parameter reference is set for those two values. If a parameter reference is set for Paved shoulder slope and/or Unpaved shoulder slope, then the adjacent lane's pavement slope (read in by parameter reference) is used to override the user defined values.

Rollover consideration

When Paved shoulder superelevation method is set to User defined, the Paved shoulder slope value can be overridden by Rollover considerations. If the algebraic difference between Paved shoulder slope value and the "calculated adjacent lane slope" exceeds the Max rollover rate then the Paved shoulder slope value will be overridden and paved shoulder slope is calculated so that the algebraic difference between paved shoulder slope value and "calculated adjacent lane slope" equals the Max rollover rate. The Adjacent lane slope method input parameter is used to set a User defined value or the superelevation of the lane next to the paved shoulder. When Paved shoulder superelevation method is set to User defined, the Adjacent lane slope is forced to follow the Paved shoulder slope value unless the Adjacent lane slope method input parameter is set to a User defined value.

Example #1 rollover exceeded scenario:

• Paved shoulder superelevation method = User defined
• Unpaved shoulder superelevation method = Match paved shoulder
• Baseline Outside Lane SE = 5.0%
• Paved shoulder slope = -4.0%
• Adjacent lane slope method = Use outside lane SE
• Max rollover rate = 7.0%

In example #1, the Paved shoulder slope value is overridden by Rollover considerations because the algebraic difference between Paved shoulder slope value and "calculated adjacent lane slope" exceeds the Max rollover rate; (5% -(-4%)) = 9%; 9% > 7%. A new paved shoulder slope will be calculated by the subassembly to be (Calculated Adjacent Lane Slope) – (Max rollover rate) = 5% - 7% = -2%. The unpaved shoulder slope will also = -2% because it was set to match the paved shoulder slope.

When Unpaved shoulder superelevation method is set to User defined, the Unpaved shoulder slope can be overridden by Rollover considerations. After paved shoulder slope value is determined, if the algebraic difference between the Paved shoulder slope and Unpaved shoulder slope value exceeds the Max rollover rate then the Unpaved shoulder slope value will be overridden and Unpaved shoulder slope value is calculated so that the algebraic difference between Paved shoulder slope value and Unpaved shoulder slope equals the Max rollover rate.

Example #2 rollover exceeded scenario (integral shoulder pavement):

• Paved shoulder superelevation method = Outside Lane SE
• Unpaved Shoulder superelevation method = User defined
• Baseline Outside Lane SE = 6.0%
• Unpaved shoulder slope = -4.0%

• Max rollover rate = 7.0%

In example #2, the Unpaved shoulder slope value is overridden by Rollover considerations because the algebraic difference between Unpaved shoulder slope value and the Paved shoulder slope value exceeds the Max rollover rate. (6% -(-4%)) = 10%; 10% > 7%. A new Unpaved shoulder slope will be calculated by the subassembly to be (Paved shoulder slope) – (Max rollover rate) = 6% - 7% = -1%.

When User defined is not used in the Paved shoulder superelevation method and/or Unpaved shoulder superelevation method, the following logic is followed for calculating the slope of the paved and unpaved portions of the shoulder:

• When Paved shoulder superelevation method and/or Unpaved shoulder superelevation method are set to the baseline superelevation categories, the slopes of the paved and Unpaved portion of the shoulder are controlled by the shoulder SE rates defined for the baseline alignment. If no shoulder SE rates are defined for the baseline alignment, slopes values are defined by the Paved shoulder slope and Unpaved shoulder slope inputs.
• When Match Paved Shoulder is used for Unpaved shoulder superelevation method, the slope of the Unpaved portion of shoulder will always be set equal to the Paved shoulder slope (as determined by Paved shoulder superelevation method and accompanying logic).

Subgrade (datum) slope

The slope of the subgrade (datum) is controlled by the Subgrade superelevation method parameter. When the Subgrade superelevation method is set to User defined, the slope is obtained from input parameter Subgrade slope. The Subgrade slope value can be entered directly or controlled using a parameter reference that sets the slope equal to the subgrade slope of an adjacent lane. Set the Subgrade superelevation method parameter to Match unpaved slope if the entire pavement structure of the unpaved shoulder is to follow rollover criteria.

Base1 and Base2 layer slopes

The slope of all base layer surfaces are controlled by the Base superelevation method. When the Base superelevation method is set to User defined, the slope is obtained from input parameter Base slope. The Base slope value can be entered directly or controlled using a parameter reference that sets the slope equal to the base slope of an adjacent lane. When Match subgrade is used for the Base superelevation method, the slope of the base portion of shoulder will always be set equal to the Subgrade (datum) slope (as determined by Subgrade superelevation method and accompanying logic).

Shoulder foreslopes

The shoulder foreslope is obtained using the Shoulder foreslope and Method to set subgrade improvement foreslope parameters. The Method to set subgrade improvement foreslope parameter is only active when a subgrade improvement layer is present.

The Method to set subgrade improvement foreslope may be set to User defined or set to Follow shoulder foreslope. The Follow shoulder foreslope option sets the subgrade improvement foreslope equal to the shoulder foreslope.

If a value of 0 is used for the Shoulder foreslope, a near vertical link is drawn from the edge of shoulder down to the subgrade (datum) layer. The subgrade improvement foreslope options are then deactivated.

Subgrade improvement

The Subgrade improvement surface is drawn at a width defined by Subgrade improvement width measured from the origin of the subassembly. If this parameter is set to 0 ft., the distance used will be equal to the Paved width + Unpaved width parameters (edge of shoulder).

There are two options for targeting the subgrade improvement width:

• The first option is to use a horizontal target.
• The second option is to use a profile target, where the profile elevations are interpreted as width values.

When both a horizontal and profile target are established, the profile target supersedes the horizontal target.

To close the bottom of the subgrade improvement surface, the Subgrade improvement closure link slope is used to define the slope of the link that extends upward to the intersection with the subgrade (datum surface). If a value of 0 is used for the Subgrade improvement close link slope, a near vertical link will be drawn from the subgrade improvement layer to the subgrade.

When Daylight subgrade improvement to foreslope is Yes, then the subgrade improvement foreslope is drawn, extending from the subgrade shoulder point at a slope defined by the Method to set subgrade improvement foreslope (and accompanying logic) to the bottom of the subgrade improvement. This input also supersedes the Subgrade improvement width and Subgrade improvement closure link slope.

Note:

When Daylight subgrade improvement to foreslope is Yes, the point to attach a subsequent subassembly is now the SGImp intersection point. If a subassembly is attached prior to setting the Daylight subgrade improvement to foreslope to Yes, then the attached subassembly will need to be moved manually.

Unpaved shoulder grade for adjacent curb options

The subassembly can be configured to grade around an adjacent curb subassembly. This option can be used when developing designs where a curb connects with this shoulder subassembly.

To enable the shoulder to conform to an adjacent curb subassembly:

• The Curb and gutter width parameter must have a value greater than 0 (zero)

• The value must be greater than the Paved width value.

A Curb height, Gutter width, and a Gutter slope parameter is provided to use to obtain these values from the adjacent curb subassembly through the use or a parameter reference for each value. The points, links and shape of the paved shoulder material are removed where the curb subassembly is attached to the assembly.

The unpaved shoulder Base thickness above the Base1 layer is defined by the Adjacent lane pavement thickness value and the unpaved shoulder slope is defined by the Unpaved shoulder slope value or superelevation method used. The unpaved link establishes a slope from the point where the paved shoulder edge would be but begins the link on the back side of where the curb is designated by the Curb width value. To force the unpaved shoulder thickness to follow the top back of curb as the thickness and not follow the standard unpaved shoulder geometry set the Set unpaved shoulder thickness to curb height value to Yes.

Widening option

The subassembly can be use in rehabilitation scenarios, where the base layers or subgrade (datum) layer is widened outside the existing roadway surface. To enable the widening option, set the Shoulder type parameter to "PartialShoulder". The subassembly will function the same, but now it will include points at the intersection of each base layer and the target surface. The point can then be used as the beginning location of each base surface layer in the widening area.

The attachment point is at the inside edge of the paved shoulder, which is typically at the outside edge of the traveled way.

In layout mode, this subassembly displays the links comprising the shoulder for a normal crown roadway situation, using User defined slopes for all layers. This allows the user to preview various scenarios using the User defined slope options.

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
Side	Specifies which side to place the subassembly.	Left/Right	Right
Shoulder type	When set to “Partial Shoulder” a point is created at each pave, base and subbase layers where it intersects with the target surface. These points becomes the surface points for a shoulder widening.	List of Options: Full Shoulder Partial Shoulder	Full Shoulder
Paved width	Width of the paved portion of the shoulder.	Numeric, Positive	3.0'
Unpaved width	Unpaved width of the shoulder from the paved shoulder to the shoulder hinge point.	Numeric, Positive	3.0'
Paved thickness	Thickness of the paved shoulder.	Numeric, Positive	4.50Ad
Adjacent lane pavement thickness	Thickness of the pavement on the lane adjacent to shoulder. This thickness defines the depth to the top of the unpaved shoulder layer. This value may be defined from a parameter reference of the adjacent lane pavement thickness.	Numeric, Positive, non-zero	4.50"
Base1 thickness	Thickness of Base1 layer	Numeric, Positive	12.00"
Base2 thickness	Thickness of Base2 layer	Numeric, Positive	0.0"
Subbase thickness	Thickness of Subbase layer	Numeric, Positive	0.0"
Subgrade improvement thickness	Thickness of subgrade improvement layer	Numeric, Positive	0.0"
Max rollover rate	Value is used to limit the maximum algebraic difference between the slope of the Paved or Unpaved Shoulder surfaces and the slope of the adjacent travel lane, also is used to limit the algebraic difference between the slope of the Paved Shoulder and Unpaved Shoulder surfaces. Rollover based shoulder rotation in superelevated sections is described in the Behavior section.	Slope	8.00%
Paved shoulder superelevation method	Specifies whether the top surface of the paved shoulder should use superelevation rates defined for the baseline alignment if it exists, or a User defined Value.	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Use outside lane SE
Paved shoulder slope	Cross slope of the paved shoulder surface. This value is used in if Paved shoulder superelevation method is set to User defined, or if superelevation is not defined for the baseline alignment.	Slope	-2.0%
Unpaved shoulder superelevation method	Specifies whether the top surface of the unpaved shoulder should use SE rates defined for the baseline alignment if it exists, or a User defined value. If Match paved shoulder is used, all other considerations are ignored and the slope of the Unpaved top surface of the shoulder will equal the slope of the Paved portion as determined by Paved shoulder superelevation method.	List of options: Match paved shoulder User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Use outside shoulder SE
Unpaved shoulder slope	Cross slope of the Unpaved shoulder surface. This value is used in if Unpaved shoulder superelevation method is set to User defined, or if superelevation is not defined for the baseline alignment.	Slope	-4.0%
Adjacent lane slope method	Specifies the method to use to determine the slope of the adjacent lane. When using Outside or Inside Lane SE of the insertion side, or the opposite side SE multiplied by -1.0, the SE rate that is used is that which is defined for the baseline. User defined slope will automatically be used when no baseline SE is defined. This parameter controls the slope of link "L4" which is the extension of the bottom of adjacent pavement or the extension of the bottom of adjacent paved should	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Use outside lane SE
Adjacent lane slope	Slope value to be used when calculating rollover and Adjacent lane slope method set to User defined. Value can (and should) be set by a parameter reference.	Slope	-2.0%
Base superelevation method	When multiple base layers exist, entry determines how the base layers are sloped.	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1 Match subgrade	Match subgrade
Base slope	Slope value to be used when Base superelevation method is set to User defined. Value can (and should) be set by a parameter reference.	Slope	-2.0%
Subgrade superelevation method	Specifies the method used to determine the slope of the subgrade (datum) surface. Use the opposite side SE x -1, results in the subgrade surface slope being equal to Superelevation Slope defined for the baseline on the side opposite the insertion side, multiplied by -1.0. If Match Paved Shoulder or Match Unpaved Shoulder is selected, the Subgrade will be parallel to the top of shoulder surface as determined by Paved shoulder superelevation method or Unpaved shoulder superelevation method. Selecting User defined applies the slope specified the or the Subgrade slope input parameter	List of options: Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1 Match paved shoulder Match unpaved shoulder User defined	Use Outside Lane SE
Subgrade slope	Fixed cross slope of the subgrade (datum) surface. This value is used if User defined is selected as the Subgrade superelevation method or superelevation is not specified for the baseline alignment.	Slope	-2.0%
Shoulder foreslope	Slope of the Foreslope of the shoulder which extends from the Shoulder Hinge Point to the Subgrade Shoulder Point.	Slope, Positive	4:1
Use 3 inches or 3/4 inch aggregate on shoulder foreslope	Determines whether the optional 3" of ¾" aggregate is placed on the foreslope of the shoulder, from the bottom of the ¾" base layer adjacent to the paved shoulder to the subgrade shoulder point as shown in WisDOT FDM 14-5-10. Option only available when more than one base layer is used.	Yes/No	No
Subgrade improvement width	Width of the subgrade improvement layer measured from the subassembly origin. Entry of zero matches the width of the shoulder.	Numeric, Positive	0.0'
Subgrade improvement closure link slope	Slope of link that extends upward from the end point of the bottom of the subgrade improvement surface to the intersection with the subgrade.	Slope, Positive	0:1
Daylight subgrade improvement to foreslope	The insertion of the subgrade improvement foreslope link, which is the foreslope link inserted after the Subgrade Shoulder Point, can be avoided by setting this parameter to No.	Yes/No	No
Method to set subgrade improvement foreslope	Method to calculate the subgrade improvement foreslope. If User defined is selected, the foreslope is determined by the Subgrade improvement foreslope input parameter. If Slope from target profile elevation is selected, the elevation of a targeted profile is interpreted as a slope. If the target profile is not valid, the Subgrade improvement foreslope input parameter value is used. If Follow shoulder foreslope is selected, the Subgrade improvement foreslope will always match the shoulder foreslope.	List of options: User defined Follow shoulder foreslope	Follow shoulder foreslope
Subgrade improvement foreslope	Slope of the Subgrade improvement foreslope of the shoulder which extends from the Subgrade Shoulder Point to projected subgrade improvement layer.	Slope, Positive	4:1
Curb and gutter width (parameter reference)	The width value is required to be larger than the paved shoulder width. A width of zero or a value less than the value of the paved shoulder width keeps all curb shoulder function Off.	Numeric, Positive	0.0
Curb height (parameter reference)	This value is obtained from the curb height output of an attached curb subassembly through a parameter reference.	Numeric, Positive	0.0
Curb width (parameter reference)	This value is obtained from the curb width output of an attached curb subassembly through a parameter reference.	Numeric, Positive	2.0
Gutter slope (parameter reference)	This value is obtained from the gutter slope output of an attached curb subassembly through a parameter reference.	Slope	-4.0%
Set unpaved shoulder thickness to curb height	A Yes value matches the unpaved shoulder thickness to the Curb height value, otherwise the unpaved shoulder thickness follows the paved shoulder thickness.	Yes/No	No
Right point suffix	List of options to use for adding a suffix to all point codes on the right side. The user defined option uses the value of the “Right user defined point suffix” parameter.	String, Combo List of Options: UserDefined _R _NB_R _SB_R _EB_R _EB_R _NW_R _NE_R _SW_R _SE_R _MED_R NoSuffix PointCodeNumber	_R
Left point suffix	List of options to use for adding a suffix to all point codes on the right side. The user defined option uses the value of the “Right user defined point suffix” parameter.	String, Combo List of Options: UserDefined _L _NB_L _SB_L _EB_L _EB_L _NW_L _NE_L _SW_L _SE_L _MED_L NoSuffix PointCodeNumber	_L
Right user defined point suffix	User defined right point code suffix	String
Left user defined point suffix	User defined left point code suffix	String

This section lists the parameters in this subassembly that can be mapped to a target object such as a surface, alignment, or profile object in a drawing. For more information, see Setting and Editing Targets in the AutoCAD Civil 3D User's Guide Help.

Parameter	Description	Status
Surface for widening	Surface that is targeted for defining the widening partial shoulder points	Optional
Foreslope from profile	May be used to set the shoulder foreslope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Match to curb switch from profile	May be used to switch the Set unpaved shoulder thickness to curb height option to Yes or No. A value of 0 (zero) sets the option to NO, and a value greater than 0 (zero) sets the option to Yes.	Optional
Paved shoulder slope from profile	May be used to set the paved shoulder slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Paved width from profile	May be used to set the paved shoulder width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Paved width	Object that defines the horizontal location of the edge of the paved portion of the shoulder. The following object types can be used as targets for specifying the width: alignments, polylines, feature lines, or survey features.	Optional
Subgrade improvement foreslope from profile	May be used to set the subgrade improvement foreslope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Subgrade improvement width from profile	May be used to set the subgrade improvement width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Subgrade improvement width	Object that defines the horizontal location of the end of the subgrade improvement. The following object types can be used as targets for specifying the width: alignments, polylines, feature lines, or survey features.	Optional
Subgrade slope from profile	May be used to set the subgrade slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved shoulder thickness from profile	May be used to set the unpaved shoulder thickness by interpreting the elevation of an object as a thickness. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved shoulder slope from profile	May be used to set the unpaved shoulder slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved width from profile	May be used to set the unpaved shoulder width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved width	Object that defines the horizontal location of the shoulder hinge point. The following object types can be used as targets for specifying the width: alignments, polylines, feature lines, or survey features.	Optional

Parameter	Description	Type
Absolute value shoulder foreslope [Output]	Slope of the link from the edge of shoulder to the subgrade shoulder point. Expressed as a positive value regardless of slope direction.	Slope
Absolute value subgrade improvement foreslope [Output]	Slope of the link from the subgrade shoulder point to the projection of the subgrade improvement layer. Expressed as a positive value regardless of slope direction.	Slope
Shoulder foreslope[Output]	Slope of the link from the edge of shoulder to the subgrade shoulder point. Upward slope is positive, downward slope is negative.	Slope
Subgrade improvement foreslope [Output]	Slope of the link from the subgrade shoulder point to the projection of the subgrade improvement layer. Upward slope is positive, downward slope is negative.	Slope
Shoulder Pave Slope [Output]	Slope of the link from the insertion point to the edge of the paved shoulder. Upward slope is positive, downward slope is negative.	Slope
Shoulder Unpaved Slope [Output]	Slope of the link from the edge of the paved shoulder to the edge of shoulder. Upward slope is positive, downward slope is negative.	Slope

Use 3 inch aggregate set to Yes

Use 3 inch aggregate set to No

Adjacent lane pavement thickness set as a parameter reference of the adjacent lane Paved thickness value and the adjacent lane paved thickness is greater than the shoulder paved thickness

Point/Link/Shape	Codes	Description
P1	Top_ETW	Origin (top inside edge of shoulder)
P2	Top_EPS	Edge of paved shoulder, finish grade
P3	Top_EGS	Edge of gravel Shoulder; outer edge of Unpaved portions of shoulder on finished grade
P4	Pave1_ETW[]	Bottom of paved shoulder at inside edge
P5	ShldPave1_EPS[]	Bottom of edge of paved shoulder
P6	Pave1_ETW[]	Bottom of adjacent pavement edge
P8	Top_ShldPave1_ES	Edge of shoulder on Pave1 Layer
P9	Base1_ETW[]	Inside edge of shoulder on bottom of Base1 layer
P10	Base1_ES[]	Edge of shoulder on bottom of Base1 layer
P11	Base2_ETW[]	Inside edge of shoulder on bottom of Base2 layer
P12	Base2_ES[]	Edge of shoulder on bottom of Base2 layer
P13	Datum_ETW	Inside edge of shoulder bottom of subbase layer (datum)
P14	Datum_SGSP, Top_SGSP	Subgrade shoulder point
P15	SGImp_ETW	Inside edge of shoulder bottom of subgrade improvement layer
P16	TopDatum_SGImp	End of subgrade improvement foreslope
P17	SGImp_ES	Outside edge of subgrade improvement layer
P18	SGImp_Daylight	Intersection of subgrade improvement closure link and subgrade (datum)
P114	Datum_ES[]	Bottom of ¾" base on foreslope at subgrade
P206	Pave1_Widen	Intersection of Pave1 layer with target surface
P209	Base1_Widen	Intersection of Base1 layer with target surface
P211	Base2_Widen	Intersection of Base2 layer with target surface
P213	Datum_Sub_Widen	Intersection of Datum layer with target surface
P214	Datum_Widen_Out	Datum shoulder edge
P215	Datum_Widen_In	Datum pave edge
P216	Datum_Widen_ShldAgg	Datum at 3" of 3/4" aggregate on shoulder foreslope
L1	Top,ShldPaved,LABELPCT	Finish grade of the paved shoulder
L2	Top,ShldUnpaved,LABELPCT	Finish grade of unpaved shoulder
L3	ShldPave1	Bottom of paved shoulder
L4	Pave1	Bottom of adjacent pavement
L5	Base1	Bottom of the first base layer
L6	Base2	Bottom of second base layer
L7	Datum	Bottom of lowest base layer
L8	SGImp	Bottom of subgrade improvement
L9	Datum	Bottom of lowest base layer outside of the subgrade improvement intercept
L10	SGImp	Subgrade improvement closure link
L11	BaseFslp	Foreslope of base layers
L11-L14	Top	Foreslope of base layers
L15	Top,SGImpFslp	Subgrade improvement foreslope link
L16	Top,BaseFslp	Top of ¾" aggregate foreslope
L100	Pave_Edge_In[]	Inside edge of pavement
L101	Pave_Edge_Out[]	Outside edge of pavement
L102-L106	Base_Edge[]	Inside edge of base layers
L108	Datum	Bottom ¾ inch aggregate foreslope at subgrade
L109	Datum	Datum partial shoulder
L111	Top	Back of curb
S1	ShldPave1	Paved shoulder
S2	Base	Base layer under paved shoulder and adjacent to lane pavement
S3	Base1	First base layer
S4	Base2	Second base layer
S5	Subbase	Subbase layer
S6	SGImp	Subgrade improvement layer

This subassembly inserts a paved or Unpaved shoulder with all pavement, base, subbase, and subgrade improvement layers per WisDOT FDM 11-5-15. In addition, use 3 inch Aggregate input determines whether the optional 3" of ¾" Aggregate is placed on the foreslope of the shoulder, from the bottom of the ¾" base layer adjacent to the paved shoulder to the subgrade shoulder point as shown in WisDOT FDM 14-5-01. The foreslope may be held constant according the Shoulder foreslope input parameter, or it can vary with a superelevation assignment or slope from profile target.

Shoulder width

The shoulder is inserted using widths and thickness parameters provided. If the Unpaved Width target offset is inside of the Paved width target, the Unpaved width is set to zero. There are two options for targeting the paved and unpaved shoulder widths. The first option is to use a horizontal target. The second option is to use a profile target, where the profile elevations are interpreted as width values. When both a horizontal and profile target is established, the profile target supersedes the horizontal target.

Pavement depth of adjacent lane

All base course thicknesses are measured vertically downward above layer. The thickness of the base located above the Pave1 layer (bottom of adjacent lane pavement) is defined by the Adjacent lane pavement thickness input. This thickness cannot be less than the Pavement thickness parameter which defines the thickness of the paved shoulder. If the Adjacent lane pavement thickness input is less than the Pavement thickness input, the value will be set equal to the Pavement thickness.

Methods of determining paved and unpaved shoulder slopes

When a User define slope is used in the Paved shoulder superelevation type and/or Unpaved shoulder superelevation type, the following logic is followed for calculating the slope of the paved and Unpaved portions of the shoulder:

When Paved shoulder superelevation type and/or Unpaved shoulder superelevation type are set to User defined, the slopes of the paved and Unpaved portion of the shoulder are controlled by the inputs for the Paved shoulder slope and/or Unpaved shoulder slope parameters, unless a parameter reference is set for those two values. If a parameter reference is set for Paved shoulder slope and/or Unpaved shoulder slope, then the adjacent lane's pavement slope (read in by parameter reference) is used to override the user defined values.

Rollover consideration

When Paved shoulder superelevation type is set to User defined, the paved shoulder slope value can be overridden by Rollover considerations. If the algebraic difference between Paved shoulder slopevalue and "calculated adjacent lane slope" exceeds theMax rollover rate then the Paved shoulder slopevalue will be overridden and paved shoulder slope is calculated so that the algebraic difference between paved shoulder slope value and "calculated adjacent lane slope" equals the Max rollover rate. Method to obtain slope of adjacent laneinput parameter is used to determine "calculated adjacent lane slope" value. Example #1 rollover exceeded scenario:

• Paved shoulder superelevation type = User defined
• Unpaved shoulder superelevation type = Match paved shoulder
• Paved shoulder slope = -4.0%
• Method to obtain slope of adjacent lane = Use outside lane SE
• Baseline Outside Lane SE = 5.0%

• Max rollover rate = 7.0%

In example #1 scenario the Paved shoulder slope value is overridden by Rollover considerations because the algebraic difference between Paved shoulder slopevalue and "calculated adjacent lane slope" exceeds theMax rollover rate. (5% -(-4%)) = 9%; 9% > 7%. A new paved shoulder slope will be calculated by the subassembly to be (Calculated Adjacent Lane Slope) – (Max rollover rate) = 5% - 7% = -2%. Unpaved shoulder slope will also = -2% because it must match the paved shoulder slope.

When Unpaved shoulder superelevation type is set to User defined, the Unpaved shoulder slope can be overridden by Rollover considerations. After paved shoulder slope value is determined, if the algebraic difference between paved shoulder slope value and Unpaved shoulder slope exceeds the Max rollover rate then the Unpaved shoulder slope value will be overridden and Unpaved shoulder slope value is calculated so that the algebraic difference between paved shoulder slope value and Unpaved shoulder slope equals the Max rollover rate. Example #2 rollover exceeded scenario (integral shoulder pavement):

• Paved shoulder superelevation type = Outside Lane SE
• Unpaved Shoulder superelevation type = Fixed Slope
• Baseline Outside Lane SE = 6.0%
• Unpaved shoulder slope = -4.0%

• Max rollover rate = 7.0%

In example #2 scenario the Unpaved shoulder slope value is overridden by Rollover considerations because the algebraic difference between Unpaved shoulder slope value and paved shoulder slope value exceeds the Max rollover rate. (6% -(-4%)) = 10%; 10% > 7%. A new Unpaved shoulder slope will be calculated by the subassembly to be (paved shoulder slope) – (Max rollover rate) = 6% - 7% = -1%.

When User defined is not used in the Paved shoulder superelevation type and/or Unpaved shoulder superelevation type, the following logic is followed for calculating the slope of the paved and unpaved portions of the shoulder:

When Paved shoulder superelevation type and/or Unpaved shoulder superelevation type are set to and of the baseline superelevation categories, the slopes of the paved and Unpaved portion of the shoulder are controlled by the shoulder SE rates defined for the baseline alignment. If no shoulder SE rates are defined for the baseline alignment, slopes values are defined by the Paved shoulder slope and Unpaved shoulder slope inputs.

When Match Paved Shoulder is used for Unpaved shoulder superelevation type, the slope of the Unpaved portion of shoulder will always be set equal to the Paved shoulder slope (as determined by Paved shoulder superelevation type and accompanying logic).

Subgrade (datum) slope

The slope of the subgrade (datum) is controlled by the Subgrade superelevation method parameter. User has the option of entering a user defined slope to be used, following the insertion side superelevation defined for the baseline alignment, following the opposite side superelevation multiplied by -1.0, matching paved shoulder slope as determined by Paved shoulder superelevation type, or matching Unpaved shoulder slope as determined by Unpaved shoulder superelevation type. When Subgrade SE Method is set to User defined, this slope is obtained from input parameter Subgrade slope which can be controlled using a Parameter Reference that sets the slope equal to that of the subgrade surface of an adjacent lane.

Base layer slopes

The slope of all base layer surfaces are controlled by the Base layer slope method. User has the option of entering a user defined slope to be used, following the insertion side superelevation defined for the baseline alignment, following the opposite side superelevation multiplied by -1.0, or matching subgrade slope (as determined by Subgrade superelevation method and accompanying logic).

Shoulder foreslopes

The shoulder foreslope is obtained using the Method to set shoulder foreslope and Method to set subgrade improvement foreslope parameters. The Method to set subgrade improvement foreslope parameter is only active when a subgrade improvement layer is present. For both parameters, there are the following options available:

• User defined: Typically used for constant slope applications. This sets the foreslope to the value given for the Shoulder foreslope input parameter.
• Slope from target profile elevation: Typically used for variable slope applications. This sets the foreslope according to the elevation of a targeted profile. The profile elevation is interpreted as a slope value.

• Inside lane SE, Outside lane SE, Inside shoulder SE, Outside shoulder SE: Typically used for variable slope applications. This sets the foreslope according to the baseline superelevation category assigned. If the baseline does not have superelevation assigned to the chosen category, the Shoulder foreslope parameter is used.

The Method to set subgrade improvement foreslope has the additional Follow shoulder foreslope option. This option sets the subgrade improvement foreslope equal to the shoulder foreslope.

If a value of 0 is used for the Shoulder foreslope, a near vertical link is drawn from the edge of shoulder down to the subgrade (datum) layer. The subgrade improvement foreslope options are then deactivated.

Subgrade improvement

The Subgrade improvement surface is drawn at a width defined by Subgrade improvement width measured from the origin of the subassembly. If this parameter is set to 0 ft., the distance used will be equal to the Paved width + Unpaved width parameters (edge of shoulder). There are two options for targeting the subgrade improvement width. The first option is to use a horizontal target. The second option is to use a profile target, where the profile elevations are interpreted as width values. When both a horizontal and profile target are established, the profile target supersedes the horizontal target. To close the bottom of the subgrade improvement surface, the Subgrade improvement closure link slope is used to define the slope of the link that extends upward to the intersection with the subgrade (datum surface). If a value of 0 is used for the Subgrade improvement close link slope, a near vertical link will be drawn from the subgrade improvement layer to the subgrade.

When Show subgrade improvement foreslope is yes, then the subgrade improvement foreslope is drawn, extending from the subgrade shoulder point at a slope defined by the Method to set subgrade improvement foreslope (and accompanying logic) to the intersection with a temporary projection of the bottom of the subgrade improvement.

Widening option

The subassembly can be use in rehabilitation scenarios, where the base layers or subgrade (datum) layer is widened outside the existing roadway surface. To enable the widening option, set the Include surface widening pointsparameter to "PartialShoulder". The subassembly will function the same, but now it will include points at the intersection of each base layer and the target surface. The point can then be used as the beginning location of each base surface layer in the widening area.

The attachment point is at the inside edge of the paved shoulder, which is typically at the outside edge of the traveled way.

In layout mode, this subassembly displays the links comprising the shoulder for a normal crown roadway situation, using User defined slopes for all layers. This allows the user to preview various scenarios using the User defined slope options.

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
Side	Specifies which side to place the subassembly.	Left/Right	Right
Shoulder type	When set to “PartialShoulder” a point is created at the intersection of each base layer and the target surface. This point becomes the beginning surface point for a shoulder widening.	String, Combo List of Options: FullShoulder PartialShoulder	FullShoulder
Paved width	Width of the paved portion of the Shoulder.	Numeric, Positive	3.0'
Unpaved width	Unpaved width of the shoulder from the paved shoulder to the shoulder hinge point.	Numeric, Positive	3.0'
Pavement thickness	Thickness of the paved shoulder.	Numeric, Positive	0.375'
Adjacent lane pavement thickness	Thickness of the pavement on the lane adjacent to shoulder. This thickness defines the depth to the top of the Base1 layer.	Numeric, Positive, non-zero	0.375'
Base1 thickness	Thickness of Base1 layer	Numeric, Positive	1.0'
Base2 thickness	Thickness of Base2 layer	Numeric, Positive	0.0'
Subbase thickness	Thickness of Subbase layer	Numeric, Positive	0.0'
Subgrade improvement thickness	Thickness of subgrade improvement layer	Numeric, Positive	0.0'
Subgrade improvement width	Width of the subgrade improvement layer measured from the subassembly origin. Entry of zero matches the width of the shoulder.	Numeric, Positive	0.0'
Subgrade improvement closure link slope	Slope of link that extends upward from the end point of the bottom of the subgrade improvement surface to the intersection with the subgrade.	Slope, Positive	0:1
Use 3 inch aggregate	Use 3 inch Aggregate input determines whether the optional 3" of ¾" Aggregate is placed on the foreslope of the shoulder, from the bottom of the ¾" base layer adjacent to the paved shoulder to the subgrade shoulder point as shown in WisDOT FDM 14-5-01	Yes/No	No
Paved shoulder superelevation type	Specifies whether the top surface of the paved shoulder should use superelevation rates defined for the baseline alignment if it exists, or a User defined Value.	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Use outside lane SE
Unpaved shoulder superelevation type	Specifies whether the top surface of the unpaved shoulder should use SE rates defined for the baseline alignment if it exists, or a User defined value. If Match paved shoulder is used, all other considerations are ignored and the slope of the UnPaved top surface of the shoulder will equal the slope of the Paved portion as determined by Paved shoulder superelevation type.	List of options: Match paved shoulder User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Match paved shoulder
Paved shoulder slope	Cross slope of the paved shoulder surface. This value is used in if Paved shoulder superelevation type is set to User defined, or if superelevation is not defined for the baseline alignment.	Slope	-2.0%
Unpaved shoulder slope	Cross slope of the Unpaved shoulder surface. This value is used in if Unpaved shoulder superelevation type is set to User defined, or if superelevation is not defined for the baseline alignment.	Slope	-4.0%
Method to set shoulder foreslope	Method to calculate the shoulder foreslope. If User defined is selected, the foreslope is determined by the Shoulder foreslope input parameter. If Slope from target profile elevation is selected, the elevation of a targeted profile is interpreted as a slope. If the target profile is not valid, the Shoulder foreslope input parameter value is used. If any of the superelevation options are chosen, the baseline superelevation is used to set the shoulder foreslope. If superelevation is not set for the baseline, the Shoulder foreslope input parameter is used.	List of options: User defined Slope from target profile elevation Inside lane SE Outside lane SE Inside shoulder SE Outside shoulder SE	User defined
Shoulder foreslope	Slope of the Foreslope of the shoulder which extends from the Shoulder Hinge Point to the Subgrade Shoulder Point.	Slope, Positive	4:1
Show subgrade improvement foreslope	The insertion of the subgrade improvement foreslope link, which is the foreslope link inserted after the Subgrade Shoulder Point, can be avoided by setting this parameter to No.	Yes/No	Yes
Method to set subgrade improvement foreslope	Method to calculate the subgrade improvement foreslope. If User defined is selected, the foreslope is determined by the Subgrade improvement foreslope input parameter. If Slope from target profile elevation is selected, the elevation of a targeted profile is interpreted as a slope. If the target profile is not valid, the Subgrade improvement foreslope input parameter value is used. If any of the superelevation options are chosen, the baseline superelevation is used to set the shoulder foreslope. If superelevation is not set for the baseline, the Shoulder foreslope input parameter is used. If Follow shoulder foreslope is selected, the Subgrade improvement foreslope will always match the shoulder foreslope.	List of options: User defined Slope from target profile elevation Inside lane SE Outside lane SE Inside shoulder SE Outside shoulder SE Follow shoulder foreslope	Follow shoulder foreslope
Subgrade improvement foreslope	Slope of the Subgrade improvement foreslope of the shoulder which extends from the Subgrade Shoulder Point to projected subgrade improvement layer.	Slope, Positive	4:1
Subgrade superelevation method	Specifies the method used to determine the slope of the subgrade (datum) surface. Use the opposite side SE x -1, results in the subgrade surface slope being equal to Superelevation Slope defined for the baseline on the side opposite the insertion side, multiplied by -1.0. If Match Paved Shoulder or Match Unpaved Shoulder is selected, the Subgrade will be parallel to the top of shoulder surface as determined by Paved shoulder superelevation type or Unpaved shoulder superelevation type. Selecting User defined applies the slope specified the or the Subgrade slope input parameter	List of options: Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1 Match paved shoulder Match unpaved shoulder User defined	Use Outside Lane SE
Subgrade slope	Fixed cross slope of the subgrade (datum) surface. This value is used if User defined is selected as the Subgrade superelevation type or superelevation is not specified for the baseline alignment.	Slope	-2%
Base layer slope method	When multiple base layers exist, entry determines how the base layers are sloped.	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1 Match subgrade	Match subgrade
Base layer slope	Slope value to be used when Base layer slope method is set to User defined. Value can (and should) be set by a parameter reference.	Slope	-2%
Max rollover rate	Value is used to limit the maximum algebraic difference between the slope of the Paved or Unpaved Shoulder surfaces and the slope of the adjacent travel lane, also is used to limit the algebraic difference between the slope of the Paved Shoulder and Unpaved Shoulder surfaces. Rollover based shoulder rotation in superelevated sections is described in the Behavior section.	Slope	7%
Method to obtain slope of adjacent lane	Specifies the method to use to determine the slope of the adjacent lane.When using Outside or Inside Lane SE of the insertion side, or the opposite side SE multiplied by -1.0, the SE rate that is used is that which is defined for the baseline. User defined slope will automatically be used when no baseline SE is defined. This parameter controls the slope of link "L4" which is the extension of the bottom of adjacent pavement or the extension of the bottom of adjacent paved shoulder.	List of options: User defined Use inside lane SE Use outside lane SE Use inside shoulder SE Use outside shoulder SE Use opposite inside lane SE x -1 Use opposite outside lane SE x -1 Use opposite inside shoulder SE x -1 Use opposite outside shoulder SE x -1	Use outside lane SE
Slope of adjacent lane	Slope value to be used when calculating rollover and Method to Obtain Slope of Adjacent Lane is set to User defined. Value can (and should) be set by a parameter reference.	Slope	-2%
Right point suffix	List of options to use for adding a suffix to all point codes on the right side. The user defined option uses the value of the “Right user defined point suffix” parameter.	String, Combo List of Options: UserDefined _R _NB_R _SB_R _EB_R _EB_R _NW_R _NE_R _SW_R _SE_R _MED_R NoSuffix PointCodeNumber	_R
Left point suffix	List of options to use for adding a suffix to all point codes on the right side. The user defined option uses the value of the “Right user defined point suffix” parameter.	String, Combo List of Options: UserDefined _L _NB_L _SB_L _EB_L _EB_L _NW_L _NE_L _SW_L _SE_L _MED_L NoSuffix PointCodeNumber	_L
Right user defined point suffix	User defined right point code suffix	String
Left user defined point suffix	User defined left point code suffix	String

This section lists the parameters in this subassembly that can be mapped to a target object such as a surface, alignment, or profile object in a drawing. For more information, see Setting and Editing Targets in the AutoCAD Civil 3D User's Guide Help.

Parameter	Description	Status
Surface for widening	Surface that is targeted for defining the widening partial shoulder points	Optional
Paved width	Object that defines the horizontal location of the edge of the paved portion of the shoulder. The following object types can be used as targets for specifying the width:alignments, polylines, feature lines, or survey features.	Optional
Unpaved width	Object that defines the horizontal location of the shoulder hinge point. The following object types can be used as targets for specifying the width:alignments, polylines, feature lines, or survey features.	Optional
Subgrade improvement width	Object that defines the horizontal location of the end of the subgrade improvement. The following object types can be used as targets for specifying the width:alignments, polylines, feature lines, or survey features.	Optional
Paved shoulder slope from profile	May be used to set the paved shoulder slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved shoulder slope from profile	May be used to set the unpaved shoulder slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Subgrade slope from profile	May be used to set the subgrade slope by interpreting the elevation of an object as a slope. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Foreslope from profile	May be used to set the shoulder foreslope by interpreting the elevation of an object as a slope.The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Subgrade improvement foreslope from profile	May be used to set the subgrade improvement foreslope by interpreting the elevation of an object as a slope.The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Paved width from profile	May be used to set the paved shoulder width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Unpaved width from profile	May be used to set the unpaved shoulder width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional
Subgrade improvement width from profile	May be used to set the subgrade improvement width by interpreting the elevation of the object as a width. The following object types can be used as targets for specifying this elevation:profiles, 3D polylines, feature lines, or survey figures.	Optional

Parameter	Description	Type
Shoulder foreslope[Output]	Slope of the link from the edge of shoulder to the subgrade shoulder point. Upward slope is positive, downward slope is negative.	Slope
Absolute value shoulder foreslope	Slope of the link from the edge of shoulder to the subgrade shoulder point. Expressed as a positive value regardless of slope direction.	Slope
Subgrade improvement foreslope [Output]	Slope of the link from the subgrade shoulder point to the projection of the subgrade improvement layer. Upward slope is positive, downward slope is negative.	Slope
Absolute value subgrade improvement foreslope [Output]	Slope of the link from the subgrade shoulder point to the projection of the subgrade improvement layer. Expressed as a positive value regardless of slope direction.	Slope

Use 3 inch aggregate set to Yes

Use 3 inch aggregate set to No

Point/Link/Shape	Codes	Description
P1	Top_ETW	Origin (top inside edge of shoulder)
P2	Top_EPS	Edge of paved shoulder, finish grade
P3	Top_EGS	Edge of gravel Shoulder; outer edge of Unpaved portions of shoulder on finished grade
P4	Pave1_ETW+	Bottom of paved shoulder at inside edge
P5	ShldPave1_EPS	Bottom of edge of paved shoulder
P6	Pave1_ETW+	Bottom of adjacent pavement edge
P8	ShldPave1_ES+	Edge of shoulder on Pave1 Layer
P9	Base1_ETW+	Inside edge of shoulder on bottom of Base1 layer
P10	Base1_ES	Edge of shoulder on bottom of Base1 layer
P11	Base2_ETW	Inside edge of shoulder on bottom of Base2 layer
P12	Base2_ES	Edge of shoulder on bottom of Base2 layer
P13	Datum_ETW	Inside edge of shoulder bottom of subbase layer (datum)
P14	Datum_SGSP, Top_SGSP	Subgrade shoulder point
P15	SGImp_ETW	Inside edge of shoulder bottom of subgrade improvement layer
P16	TopDatum_SGImp	End of subgrade improvement foreslope
P17	SGImp_ES	Outside edge of subgrade improvement layer
P18	SGImp_Daylight	Intersection of subgrade improvement closure link and subgrade (datum)
P114	Datum_ES	Bottom of ¾" base on foreslope at subgrade
P206	Pave1_Widen	Intersection of Pave1 layer with target surface
P209	Base1_Widen	Intersection of Base1 layer with target surface
P211	Base2_Widen	Intersection of Base2 layer with target surface
P213	Subbase_Widen	Intersection of Datum layer with target surface
P214	Datum_Widen_Out	Datum 3" aggregate widen
P215	Datum_Widen_In	Datum pave edge
L1	Top,ShldPaved	Finish grade of the paved shoulder
L2	Top,ShldUnpaved	Finish grade of unpaved shoulder
L3	ShldPave1	Bottom of paved shoulder
L4	Pave1	Bottom of adjacent pavement
L5	Base1	Bottom of the first base layer
L6	Base2	Bottom of second base layer
L7	Datum	Bottom of lowest base layer
L8	SGImp	Bottom of subgrade improvement
L9	Datum	Bottom of lowest base layer outside of the subgrade improvement intercept
L10	SGImp	Subgrade improvement closure link
L11-L14	Top,BaseFslp	Foreslope of base layers
L15	Top,SGImpFslp	Subgrade improvement foreslope link
L16	Top,BaseFslp	Top of ¾" aggregate foreslope
L100	Pave_Edge_In	Inside edge of pavement
L101	Pave_Edge_Out	Outside edge of pavement
L102-L106	Base_Edge	Inside edge of base layers
L108	Datum	Bottom ¾ inch aggregate foreslope at subgrade
S1	ShldPave1	Paved shoulder
S2	Base	Base layer under paved shoulder and adjacent to lane pavement
S3	Base1	First base layer
S4	Base2	Second base layer
S5	Subbase	Subbase layer
S6	SGImp	Subgrade improvement layer