You’ve created an alignment from a polyline, but upon inspection, there are no PI’s (line extensions) at any of the curves. Why? And, how can can I get ‘em? Read on…
On July 7, 2010,
in 2007, 2008, 2009, 2010, 2011, Alignments, Polylines, civil3d.com,
by Matt Kolberg
One of the most frequently-asked questions in the Civil 3D discussion groups has to do with how scaling works for Civil 3D labels and tables. The question usually comes up phrased as “How come my text looks good in modelspace, but is huge (or tiny) in paperspace?” or “How come my Table columns overlap in paperspace?”
At first glance, Civil 3D labels and tables seem to scale much like Annotative Text. However, Civil 3D Labels and Tables were capable of their auto-sizing behavior long before AutoCAD got Annotative Text, and do not use the Annotation Scale at all. Instead, Civil 3D Labels size according to their own rules. Read on for more…
We recently had a client request that we display the Latitude and Longitude of Cogo Points formatted as degrees and decimal minutes. This format seems to have become a standard display format of many hand-held GPS units. Unfortunately, Civil 3D does not contain a built-in option for formatting Latitude and Longitude in decimal minutes. No problem, I thought… I’ll simply use some expressions. But it turned out to be a much more difficult task than I expected… Read on for the details.
One of the greatest strengths of Autodesk products is the extensive Application Programming Interface (API), which gives users the ability to customize and extend the functionality of the software. In the past, some favorite techniques included using Visual Lisp or VBA to create any needed customizations. However, technology has been changing, and with Civil 3D, we need a somewhat different approach…
For those of us still using Civil 3D 2009 or less:
There are lots of times when grading an intersection of two roads with steep slopes that you need to adjust a lane cross slope to make the intersection drain properly. Lets review how to grade an intersection using Featurelines (FL) – the fastest way if you don’t need to run pavement quantities off the Corridor model, until you upgrade to Civil 3D 2010, 2011, etc… - and also lets look at a fast way to adjust road cross slopes using Superelevation points.
The first step is to extend the Corridor Model up to the curb radii. Unless the roads are coming together at exactly 90-degree angles you will need to add a region to the corridor model and create an assembly that is only the right – or left – lane (see image below).
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