Civil 3D – Part Builder Context Solution Part 1

I stated previously that David Neill gave me an idea.  A simple switch that had not been useful previously.  The problem was that I had just not returned to it after so many new ideas.  Thanks David!!  I guess collaboration works huh.

It took a while.  I had beaten this up over and over.  I did not want to rerun it all.  Through the frustration, I just kept thinking there is no way David is crazy.  Eventually, I got the combination right. 

This article proceeds with the premise that everyone is familiar with part builder to some degree, and has an existing part that needs to be made variable.  If not, I have a load of info already to use to catch up.

I did say multi part.  Don’t worry, there are only 2 parts.  The first is what David ad I worked to beat, and the second is when that wasn’t good enough for me.

Part 1 – Getting our existing Parameters into  structure that allows later adjustments.

Part 2 – Getting the Catalog require parameters BACK INTO the model.

I have rewritten this 3 times.  Please forgive me if it is a bit shabby.  It is all starting to run together now.

The old problem

We have been fighting an old issue of customizable parameters.  We can make he basic parameters such a height, width, etc. adjustable in the Civil 3D environment, but not specific feature parameters that we need.  Say like the angle of a structure slope.  After working so hard on a structure, who wants to be stuck with a limitation.  David and I did get some ranges and lists to come through, but we couldn’t do it on a consistent basis…until now.

I will go through and identify the major portions of this adjustment.  As I do I will discuss the issues, and explain the edits.  We will be changing things as we go.  This is not a tutorial, but more of an explanation, and a few warnings that have not been made clear elsewhere.

We will focus on the following:

• Some basic information about the Catalog
• Getting into the Part Builder Catalog in 2010
• The Custom Switch
• The Model Variables
• The Context
• The Named Parameter
• The thing that hides Successes and Failures the most
• Validation

Civil 3D – Parcel segment bug again

This is an oldie but a goodie.

I get this about once per year, when I have to do some survey drafting. The last time it occurred on 2007 and I had some seriously wigged out geometry. No one could say why (not the big dogs either).

It happened again, and with brutally simple geometry; no overlapping segments.

The Arc length is good, but notice the Chord length in the label.  

In the Parcel Geometry Vista the chord information is correct, but using a report, the Chord is erroneous, like the label.

The solution is to kill the bloody curve and recreate it.  This is rarely a solution when you have complex parceling.

I am hoping someone will have a better answer or solution that we have already heard. If you come up with something, please post it.