Understanding Targets
Every subassembly is programmed to have certain capabilities, but it needs some guidance from the user to figure out exactly how to do what is wanted. For example, a daylight subassembly contains instructions for how it is to extend to a surface model, but it is up to you to tell it which surface model to work with. Many of the lane subassemblies can be used to hook into an offset alignment and/or profile, but need your help in determining which alignment and/or profile is desired.
These instructions to the subassembly are called targets. When you built the corridor in the first exercise, Civil 3D prompted you to add targets. In that case, you chose a surface target and continued. However, surface targets are just the tip ...
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