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Mastering AutoCAD® Civil 3D® 2012 by Louisa Holland, Richard Graham

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Using an Assembly Offset

In Chapter 9, you completed a road-widening example with a simple lane transition. Earlier in this chapter, you worked with a roadside-ditch transition, intersections, and cul-de-sacs. These are just a few of the techniques for adjusting your corridor to accommodate a widening, narrowing, interchange, or similar circumstances. There is no single method for building a corridor model; every method discussed so far can be combined in a variety of ways to build a model that reflects your design intent.

Another tool in your corridor-building arsenal is the assembly offset. In Chapter 8, you had your first glimpse of an offset assembly, but in the example that follows you will have a chance to use one for a bike path design. ...

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