Results 1 to 6 of 6

Thread: Offset Alignment

  1. #1
    Member
    Join Date
    2009-02
    Posts
    3
    Login to Give a bone
    0

    Default Offset Alignment

    Is it possibile create a new track by offset from a existing track in automatic ? ( in civil 3d 200

    thank you
    Mark

  2. #2
    All AUGI, all the time brian.hailey933139's Avatar
    Join Date
    2006-12
    Location
    Loveland, CO
    Posts
    734
    Login to Give a bone
    0

    Default Re: Offset Alignment

    No. Not in 2009. You can offset an alignment and that will give you a polyline that you could then turn into an alignment.

    Again, not in 2009 (nudge nudge wink wink say no more say no more)

  3. #3
    Active Member bruce.adams's Avatar
    Join Date
    2005-05
    Location
    New England
    Posts
    59
    Login to Give a bone
    0

    Wink Re: Offset Alignment

    Again, not in 2009 (nudge nudge wink wink say no more say no more)
    2010 Has dynamic offsets for alignments! Plus much much more! wink, wink back at ya!

  4. #4
    AUGI Addict Maverick91's Avatar
    Join Date
    2000-12
    Location
    Grand Prairie, Texas, USA
    Posts
    1,324
    Login to Give a bone
    0

    Default Re: Offset Alignment

    Okay, so, I can create offsets to an alignment. I can even create a widening of the offset. I can even apply circular curves to the widening. BUT, how can I apply spiral-curve-spiral transitions to the widening?

    Can I apply an angle to the transitions for the widening?

  5. #5
    All AUGI, all the time brian.hailey933139's Avatar
    Join Date
    2006-12
    Location
    Loveland, CO
    Posts
    734
    Login to Give a bone
    0

    Default Re: Offset Alignment

    As far as I know, the transitions for the widenings on an offset alignment can't have spirals. If you need to have spirals, I think the only option is to create the offset alignment independantly of the centerline alignment.

  6. #6
    Woo! Hoo! my 1st post
    Join Date
    2009-10
    Posts
    1
    Login to Give a bone
    0

    Default Re: Offset Alignment

    Just a quick note on C3D 2010 Offset Alignments. These dynamically linked alignments are very powerful but when you offset a spiralled alignment, say using clothoid spirals, the resulting offset does not (CANNOT) employ true clothoids. This is not a limitation of the software, just a mathematical fact of life. There are two other methods for creating "nearly parallel" alignments with spirals that C3D does not discuss (yet) that are used by various transit agencies.

    SRM

Similar Threads

  1. 2011: label points at an offset from alignment showing stat, offset, and description
    By mw156 in forum AutoCAD Civil 3D - Survey
    Replies: 6
    Last Post: 2016-09-29, 06:10 PM
  2. Add alignment station offset labels
    By krkeec763189 in forum Dot Net API
    Replies: 0
    Last Post: 2013-10-07, 09:54 AM
  3. Maintaing offset stations when the alignment changes
    By tntdraftsol in forum AutoCAD Civil 3D - General
    Replies: 1
    Last Post: 2012-09-12, 09:35 PM
  4. Cannot offset from alignment.
    By czar11 in forum AutoCAD Civil 3D - General
    Replies: 1
    Last Post: 2010-09-10, 09:33 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •