Evaluating Existing Conditions

• Describe the workflow for creating existing ground surfaces.
• Generate an EG surface based on contour data.
• Generate an EG surface by importing data from an external LandXML file.
• Evaluate the existing 3D surface model.

Designing Interchanges

• Describe a workflow for interchange design by identifying the engineering tasks in the design process.
• Create horizontal alignments using two methods.
• Apply design criteria and superelevation to the horizontal component of the alignments.
• Create surface profiles to display the existing terrain along an alignment.
• Create layout profiles that represent designed elevations along an alignment.
• Create assemblies and add subassemblies to create a typical section.

Modeling Interchanges

• Describe a workflow for modeling interchanges.
• Create the corridor models for the interchange inner and outer ramp loops; create the finished grade and datum surfaces; and generate the final contours using these surfaces.
• Generate meaningful construction information by labeling the finished grade surface; creating cross sections; computing volumes; creating a report of earthwork cut and fill quantities; and creating a report on the quantity of roadbed materials..