LnPulvRelOne

Subassembly used to define pulverize and relay sections allowing for shoulder widening on a single side. Elevation of the attachment point is computed from the baseline alignment and profile. Multiple occurences of the LanePulverizeandRelayOneSide can be strung together to model more then one lane of pulverize and relay on a single side.

This subassembly is used to define pulverize and relay sections allowing for shoulder widening on a single side. Subassembly first finds the bottom of the pulverize surface by using the attachment point elevation and subtracting the overlay depth and then subtracting the Pulverize depth. All other links and slopes are drawn from this point. By definition, the bottom of the pulverize is also the bottom of the relay. The top of the relay is located by adding the Relay Depth from the bottom of pulverize/relay surface. The link modeling the top of the relay and the link modeling the bottom of the relay are extended outward to the Relay Width Defined using the Slope of the Pavement.

Once the Top of the Relay has been modeled, the overlay is computed by adding the Overlay Depth to this vertical location. The overlay is then extended out outward to the Lane Width defined using the Slope of the Pavement. Note that the elevation of the inside edge of the overlay may be different then the attachment point elevation if the relay depth is different than the pulverize depth.

The cutout section begins at the offset defined by the Pulverize Width parameter. Layers defining the bottom of the first base course layer, second base course layer, and top of the subgrade surface are defined measuring down from the top of the overlay at the offset of the ETW point determined by the Lane Width input. The Depth to Subgrade defines the depth of the bottom of the lowest base course layer. If the Base Depth entered is greater than the Subbase Depth entered, then Subbase Depth is equal to the Base Depth. If the Depth to Subgrade input is less than either the Base Depth or the Subbase Depth, then the Depth to Subgrade will be equal to the greater of the two values.

The cutout area is defined by an essentially vertical link (slight offset from vertical so that surfaces can be created). This link starts at the horizontal offset defined by the Pulverize Width parameter on the Target surface and extends down to the top of the subgrade (defined by the Depth to Subgrade Parameter). The base course link, subbase course link and top of subgrade link extend from this horizontal position outward to a distance defined by the Lane Width parameter or the Relay Width parameter, whichever is greater, using the slope parameter defined for the subgrade. All base course layers follow the slope of the subgrade. In addition, from the top of the essentially vertical link, links are inserted inward, following the Target Surface, until reaching the attachment point. This allows for a closed shape to be created for the pulverize.

Ultimately, a link is drawn from the outside edge of the subgrade link to its intersection with the top of relay link, creating closed shapes to allow for quanitification.

The attachment point is at the inside edge of the overlay on the top of the pavement surface.

In layout mode, this subassembly displays the overlay layer links starting from the attachment point sloping away at a slope -2%. Shown at the given width and slopes.

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.

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.

When Depth to Subgrade = 0.0