Hi guys.
I have a problem on my civil 3D 2015:
When i calculate superelevation, using "_Autodesk Civil 3D Metric (2011) Roadway Design Standards.xml" file, on clothoid (transition zone before maximum value on circular curve) slopes are not equal on left and right. Why this happens?
We need more information to be able to help. What settings are you using in the Superelevation Wizard? Are you looking as slopes in the tabular editor, or on your road cross sections?
Steve
Please use the Accept as Solution or Kudo buttons when appropriate
Hi.
Here the settings:
Undivided Crown
Pivot Method:Right side
Symmetric roadway
Outside Edge shoulders:Calculate:
Shoulder slope treatment:Low side:
Match lane slopes
High side:Match lane slopes
Design criteria:_Autodesk Civil 3D Metric (2011) Roadway Design Standards.xml
Superelevation rate table:AASHTO 2011 metric 8%
Transition lenght~table:2 lane
Attainment method:AASHTO 2011...
Apply curve smoothing and automatically resolve overlap
The big problem is that:
Transition in region, End Normal Crown and Level Crown (Runout) must come before clothoid zone and it dont.
On runoff:
Begin full super and begin curve is correct, but Reverse Crown dont. Reverse Crown starts along clothoid and it must start on clothoid begin.
If we have Crown (2 lane 2.5%), one side must start rotate before clothoid (+- 25m), and the 2 sides must rotate (symmetric) along clothoid (error).
Along circular curve 2 sides rotate on maximum value (correct).