A two-day course in the use of 12d Model for road and intersection design.

Participants will learn the process for creating road designs in 12d Model, including basic intersection design, adding superelevation and widening, creating bus bays and the like. They will be familiar with the techniques for creating long and cross sections drawings, and \’Chaining\’ design operations together so that designs and drawings can quickly be revised.

Course Summary

Day 1

• Load survey data and create a triangulation of the existing surface.
• Create the road centreline (reference string or control line) for a road.
• Exercises will cover accurately locating both horizontal and vertical geometry.
• Create the cross section definition for the road (called a template) and use this to complete the simple road design.
• Review road cross sections at different chainages, and view the road in a 3d perspective view.  Drive along your road.
• Edit the road centreline, and update the design.  Note the changes to cut and fill volumes.
• Generate Plan, Longsection and Cross Section drawings ready for plotting or export to CAD.

Day 2

• Review the techniques covered in Day 1
• Open an existing project, and review the design of the Reference Strings (road centrelines) for two roads.  Add plan transitions (spirals) to the road centrelines.
• Load templates (cross section definitions) from a library, and review the cross sections.
• Create an MTF (a cross section control file) load templates into the MTF, and generate the road design for both roads.
• Use the commands in the MTF to create widening, superelevation and layout of a bus-bay.  Design a spoon drain for the bus-bay.
• Design an overlay for one of the roads, and ensure that crossfall of the overlay matches the crossfall of the existing road.
• Create kerb returns for the intersection of the two roads, and grade (create a vertical design) the kerb returns.
• Use 12d Model to automatically generate the grading.
• Review the process for creating Long Section and Cross Section drawings.
• Create a ‘Chain’ of the design operations.  This automates the design steps required when changes are required, and allows quick and effective redesign and drawing production.