MX v8i RoadwayDesigner
The general MX workflow for Roadway Designer includes scheme management, corridor creation, template application, superelevation through to creating the resulting MX surface models, cross sections and drawing components.
Templates - T-2-12-4-4
The NHDOT-TEMPLATES.itl file contains several templates. The T-2-12-4-4 has been developed to cover most uncurbed situations and is easily modifiable using the defined Parametric Constraints.
Controlling the Design - Parametric Constraints
Use this dialog to set up constraint value overrides for specified station ranges. Just about every defined aspect of the template can be controlled using constraints: material depths, feature widths, and slopes. From shoulder widening, turn lane tapers (as shown), shoulder break widening for guardrail to modifying slopes all are controlled with Parametric Constraints.
Controlling the Design - Superelevation
Superelevation is used to control the cross slope of roadways in areas of horizontal curves and spirals. In the Roadway Designer command, superelevation control lines can be created and then used as vertical point controls to control the elevation of a point relative to another point in the cross section.
Displaying the Design - Create Surface and Sections
Using the Create Surface command, allows creation of a unified merged triangulated surface for all corridors in a design, or separate surfaces for each corridor. Additionally components, MX plan feature strings and MX Sections are created off this option.
Additional insight and explanation can be found in the help files by hitting HELP on the Roadway Designer panel and by going to Start>Bentley>MX V8i>Help and Tutorials Expand MXROAD>Tutorials>Roasway Designer MX