With C3D, it is an ongoing evolution on what to xref into your plot sheets and when to reference data into your plot sheets. It has been awhile since anything was posted about this so I thought I would share what seems to work the best.
First, I will throw a disclaimer in that each company’s needs and setup will be slightly different.
Second, I have added a simple flow chart so that you can visualize how the process works.
It seems complex but the most challenging part is changing our thinking of how we work just a bit. Let’s walk through a project.
- We have an existing surface file (considered a design file) and we DREF this into the existing topo survey file (considered linework).
- We do a conceptual layout. Since this is linework only, it is a linework file.
- We xref our existing survey and our conceptual linework into a new file where we create our proposed surface. We will also have to DREF in the existing surface.
- We xref our existing survey and our conceptual linework into a new file where we create our storm sewer drainage pipe network. We will need to DREF in our proposed surface (and probably our existing surface depending upon location and length of network).
- Now we begin creating our plot files. To create our grading and drainage plan:
- We xref in the existing survey and the proposed linework into a new file. We also DREF in the pipe network and the proposed surface. In this file, we label our contours, pipes, and structure in a way that the project can be permitted, constructed and built. We can even drop in some surface spots for good measure.
This may seem like a lot of steps but there are reasons to do it this way.
- Reduces file size, especially with keeping C3D objects out of drawings they are not needed in.
- Opens the opportunity for the engineer to still be tweaking the design while the designer is working on linework (parking stalls, easements, etc.) and setting up of the sheets (even throwing in labels for contours) without having to worry about the design being done.
- Gives the greatest flexibility for presentation. How you may want or be required to show alignment labels in your layout plan vs. your plan and profiles drawing can differ OR your contours, spots, and labels for your surface from your Grading and Drainage Plan to your Drainage Area Map or Erosion Control Plans.
Do you see the power of this setup? How much you put in the linework files, design files, and how much you break up your plot files will vary per company and really per project but you get the overall point.
Look at your project containing three different sections: Design, Linework (Layout), and Plot (Construction Plans)