CGBasic – Version 26.1

The CGBasic subassembly inserts points, links and shapes representing standard WisDOT concrete curb and gutter types with optional base course layers and terrace options. Dimensions of the curb and gutter are fixed shapes per WisDOT standard details and select municipal standards.

The CGBasic subassembly does not have parameters for creating base and subbase layers. This subassembly can be partnered with the LnExtendBase subassembly by attaching it to the inside or outside top pavement point. The LnExtendBase has options to extend the base and subbase layers under the curb.

Curb shape, gutter slope and dimensions are derived from WisDOT standard detail drawings as shown in the WisDOT Facilities Development Manual.

Curb Type

• WisDOT standard curb selection is determined by first setting the Curb and gutter size parameter to either Wi18, Wi30, or Wi36 and then setting the corresponding curb type parameter; Wi 18" Curb Types, Wi 30" Curb Types, Wi 36" Curb Types.
• Curb selection for Milwaukee County and City of Madison is determined by setting the Curb and gutter size parameter to one of the Mco# or Mad# options.

• The Profile target for curb height can be assigned an elevation target (a profile that defines an elevation) during the corridor build process and will override the gutter type curb height, and allow for creating curb height transitions.

Gutter slope

Bottom of curb link is always parallel to the gutter slope.

• When Gutter slope method is set to Standard, the slope of the gutter will adhere to the standard detail slope.
• When Gutter slope method is set to User defined, the user may define a slope by setting the User defined slope parameter or, once an Assembly has been built, the user may set a parameter reference for the User defined slope in the Assembly Properties.
• When Gutter slope method is set to any SEoption, the subassembly uses the baseline alignment SE to determine the gutter slope. When using any of the "Use opposite" designated parameters, the gutter slope is defined from the SE slope on the opposite side, multiplied by -1.0. A profile elevation target can be used to create or adjust curb slope transition.

• The Profile target for gutter slope can be assigned an elevation target (a profile that defines a slope as an elevation) during the corridor build process and will override any Gutter slope method parameter.

Terrace

The terrace is a link and a point at the end of the link that is inserted at a width and slope from the back of the curb.

• Terrace width defines the total width of the terrace.
• Terrace slope defines the slope of the terrace or the slope of the extended subgrade top link.
• Subgrade width defines a width the subbase layer extends beyond the back of the curb.
• Terrace width input is less than Subgrade width input, a link is inserted from the back of curb for a distance defined by the Subgrade width and a slope defined by the Terrace slope.
• When the Terrace width input is greater than the Subgrade width, a point is inserted on the terrace link defined by the Subgrade width.
• When the Terrace width is set to zero, and the Subgrade width is set to zero, a terrace width of 0.01 is created to allow for datum surface creation needs.

• Setting Add outside terrace link to marked point to Yes, creates the terrace link to a marked point. The marked point name is required in the Marked point target name parameter.

Terrace Subbase

The Terrace subbase thickness parameter can be set to define the thickness of the terrace subbase.

• When the Terrace width is not set to zero, links and a shape below the terraces link will be inserted.
• When a Subgrade width is defined the datum point will be inserted on the terrace subbase link instead of on the terrace (top) link.

The CGBasic has three attachment point options, at the gutter edge or flange, at the top back of the curb, or at the outside point of the terrace.

• When the Insertion point parameter is set to Gutter edge, the subassembly displays the curb & gutter component based on the parameters and targets selected.
• When the Insertion point parameter is set to Back of curb or Terrace, the subassembly displays the curb & gutter component based on the parameters selected, but the Profile target for curb height cannot be defined. The curb heights will remain at the selected curb type height.

Info: All dimensions are in feet unless otherwise noted. Curb & gutter dimensions are in inches. All slopes are in a percent slope designated with a "%" sign.

These are the parameters in this subassembly that can be mapped to a target object such as a alignment, polyline, feature line, or survey feature object in a drawing. For more information, see Setting and Editing Targets in the AutoCAD Civil 3D User's Guide Help.

Info: All dimensions are in feet unless otherwise noted. Slopes are in a percent slope designated with a "%" sign.

The CGBasic subassembly inserts points, links and shapes representing standard WisDOT concrete curb and gutter types with optional base course layers and terrace options. Dimensions of the curb and gutter are fixed shapes per WisDOT standard details and select municipal standards.

The CGBasic subassembly does not have parameters for base and subbase layers. This subassembly can be partnered with the LnExtendBase subassembly by attaching it to the inside or outside top pavement point. The LnExtendBase has options to extend the base and subbase layers under the curb.

Curb shape, gutter slope and dimensions are derived from WisDOT standard detail drawings as shown in the WisDOT Facilities Development Manual.

Curb Type

• WisDOT standard curb selection is determined by first setting the Curb and gutter size parameter to either Wi18, Wi30, or Wi36 and then setting the corresponding curb type parameter; Wi 18" Curb Types, Wi 30" Curb Types, Wi 36" Curb Types.
• Curb selection for Milwaukee County and City of Madison is determined by setting the Curb and gutter size parameter to one of the Mco# or Mad# options.

• The Profile target for curb height can be assigned an elevation target (a profile that defines an elevation) during the corridor build process and will override the gutter type curb height, and allow for creating curb height transitions.

Gutter slope

Bottom of curb link is always parallel to the gutter slope.

• When Gutter slope method is set to Standard, the slope of the gutter will adhere to the standard detail slope.
• When Gutter slope method is set to User defined, the user may define a slope by setting the User defined slope parameter or, once an Assembly has been built, the user may set a parameter reference for the User defined slope in the Assembly Properties.
• When Gutter slope method is set to any SEoption, the subassembly uses the baseline alignment SE to determine the gutter slope. When using any of the "Use opposite" designated parameters, the gutter slope is defined from the SE slope on the opposite side, multiplied by -1.0. A profile elevation target can be used to create or adjust curb slope transition.

• The Profile target for gutter slope can be assigned an elevation target (a profile that defines a slope as an elevation) during the corridor build process and will override any Gutter slope method parameter.

Terrace

The terrace is a link and a point at the end of the link that is inserted at a width and slope from the back of the curb.

• Terrace width defines the total width of the terrace.
• Terrace slope defines the slope of the terrace or the slope of the extended subgrade top link.
• Subgrade width defines a width the subbase layer extends beyond the back of the curb.
• Terrace width input is less than Subgrade width input, a link is inserted from the back of curb for a distance defined by the Subgrade width and a slope defined by the Terrace slope.
• When the Terrace width input is greater than the Subgrade width, a point is inserted on the terrace link defined by the Subgrade width.
• When the Terrace width is set to zero, and the Subgrade width is set to zero, a terrace width of 0.01 is created to allow for datum surface creation needs.

• Setting Add outside terrace link to marked point to Yes, creates the terrace link to a marked point. The marked point name is required in the Marked point target name parameter.

Terrace Subbase

The Terrace subbase thickness parameter can be set to define the thickness of the terrace subbase.

• When the Terrace width is not set to zero, links and a shape below the terraces link will be inserted.
• When a Subgrade width is defined the datum point will be inserted on the terrace subbase link instead of on the terrace (top) link.

The CGBasic has three attachment point options, at the gutter edge or flange, at the top back of the curb, or at the outside point of the terrace.

• When the Insertion point parameter is set to Gutter edge, the subassembly displays the curb & gutter component based on the parameters and targets selected.
• When the Insertion point parameter is set to Back of curb or Terrace, the subassembly displays the curb & gutter component based on the parameters selected, but the Profile target for curb height cannot be defined. The curb heights will remain at the selected curb type height.

Info: All dimensions are in feet unless otherwise noted. Curb & gutter dimensions are in inches. All slopes are in a percent slope designated with a "%" sign.

These are the parameters in this subassembly that can be mapped to a target object such as a alignment, polyline, feature line, or survey feature object in a drawing. For more information, see Setting and Editing Targets in the AutoCAD Civil 3D User's Guide Help.

Info: All dimensions are in feet unless otherwise noted. Slopes are in a percent slope designated with a "%" sign.