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  1. Solved: Clothoid - Autodesk Community

    Apr 12, 2020 · Hi @Anonymous , When exporting to 2D it will always look like tiny straight as it is constantly transitioning. If you want to really show it just create (Tangent Point) TP geometry or label …

  2. Draw Clothoid with Parameters A, R, L - Autodesk Community

    Feb 9, 2022 · How can I draw a clothoid with just parameters A, R or A, L and only an endpoint of an axis? And: How can I attach/find a tangent with a specified angle on a clothoid?

  3. Solved: Clothoid Length - Autodesk Community

    Dec 16, 2024 · hello engineers, I've drawn a simple circular curve as part of my alignment and wanted to check whats the clothoid Length in this simple circular curve within this civil 3d environment, or even …

  4. parametric inputs for clothoid loop

    Oct 16, 2019 · I am trying to make a clothoid loop curve for a roller coaster model except I cant seem to find the proper !MATHMATICAL! inputs to make it happen in the equation curve tool

  5. Length of throw clothoid (spiral) - Autodesk Community

    Jul 11, 2025 · Hello everyone, Could anyone help me with the calculation for the length of Throw (p)? Please see my figures in the attachments, where I have made an alignment, with all values, R, L …

  6. Free curve fillet with a previous fixed clothoid

    Mar 22, 2021 · Hi. Can we add a free curve fillet in an alignment if the previous entity is a fixed clothoid? I am choosing "add a free curve fillet (between two entities, radius). The previous entity is a fixed …

  7. FORMULA FOR TRANSITION CURVE - Autodesk Community

    Aug 7, 2024 · Hi, I need to find the type of curve used for transition curve in civil 3D, when I checked the auto desk help, it said that Civil 3D uses Clothoid Spiral and gave me following equations. (Refer …

  8. Clothoid-Curve-Clothoid Lisp - Autodesk Community

    Nov 9, 2016 · Yes I do. Im just trying if theres a lisp that I can generate from besides using c3d tools. I'll just search a lisp for a clothoid and see how it goes from there 報告 0 件のいいね 返信 メッセージ 4 …

  9. Export aligment with clothoide as arcs to AutoCAD

    Sep 12, 2023 · Hello, is there a way to export aligment with arcs and clothoide (spiral) that will represent spiral as smaller arcs, not lines? I tried to use any other spiral like Bloss or Parabol, but it doesn't help.

  10. Recreating a Spiral Curve from a Legal Description

    Oct 5, 2016 · The spiral curves used in railways are NOT the same as the clothoid spirals generally used in Civil3d. You will probably have to consult with a land surveyor to find out which spiral definition …