After you have created the design objects, you can create several types of drawings in Level 2 of the workflow, including base, linework, and engineering drawings.
In a multi-user environment, engineers and designers can reference core project objects into composite drawings, keeping the drawing size small, and ensuring that core objects are not unintentionally modified. At the same time, technicians and drafters can create plan sets and production drawings as required.
You create base drawings, such as a utility base or grading base, by combining data references from Level 1 drawings. You can use base drawings to show the existing conditions on a site, and then xref this drawing into a site features plan or a plan set.
Creating linework drawings is sometimes an intermediate step between developing engineering plans and base drawings. Linework drawings contain the linework and AutoCAD objects (such as lines, text, and blocks) that are used to build or represent existing conditions. Although linework drawings do not include Autodesk Civil 3D objects, you can still add linework drawings to the project so that you can manage and reference them later on in the workflow.
Engineering plans, such as corridor designs, grading plans, or site plans, result from combining design objects to create other design objects for your project. For example, in a corridor model drawing, you can keep the drawing at a manageable size by using data references to bring in the alignment and profile from their source drawing, and the existing ground surface from its source drawing.