Additional Exercise;
In this exercise, you learned how to provide the third stage of a road design: the cross section. You did this by constructing an assembly that represents the typical cross section of the road. Then you took the design of the road even further by combining the alignment, profile, and assembly to make a complete three-dimensional model of the road: a corridor. With the corridor in place, you made the model more flexible by introducing targets that enable interaction with other objects in the drawing. Now you have a model of the road that will respond to changes in the alignment, profile, assembly, existing ground surface, and other objects that have been used as targets.Open the drawing named Corridors Beyond.dwg located in the Chapter 09 class data folder. Use the following basic guidelines to create a corridor for Madison Lane:
- As a cost-cutting measure, the developer would like to omit curb and gutter from Madison Lane and Logan Court. Create a new assembly for these two roads that consists of two 12-foot (4-meter) lanes, a 3-foot (1-meter) grass strip sloped downward at 2 percent, and the same daylighting that was used for the Jordan Court corridor.
- Use the red polyline near station 3+00 (0+080) to create a pull-off area by widening the right lane to match the polyline.
- Create a surface for the Madison Lane corridor.
- Use the diamond-shaped grip to move the end of the Madison Lane corridor back to station 6+00 (0+180). Use the Create Intersection command to design an intersection where Madison Lane meets Logan Court. Use the default settings of the Intersection Wizard, but be sure to investigate those settings and think about how they affect the design.
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