Float Straight with Transition

In MX Rail when you float a straight by point or bearing, you have the option to specify a transition length. 

Likewise when you free in a straight you can specify transition lengths on both sides.

However in BRT when you float / free a straight I can't see any option to add a transition length. Why not? Is there any workaround?

I'm using BRT version 08.11.07.566.

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  • Hello MX Team (I have been also using MX for many years),

    Inroads, so Rail Track, has a totally different way of managing alignment than MX. Then we can feel sometime a bit lost even disappointed. But on the other hand we have more freedom than MX gives.

    If there is a transition already attached to the arc then you can add a float line by a point asking to connect the ARC not the transition. Then you are able to move the point and see the dynamic link including the transition.

    Rail Track allows to create arcs with transitions even there is no element after the transition. MX does not allow this.

    So in Rail Track the best is to create the transition first. When you place the arc you may know you will continue the alignment and that a transition is required.

    But there is a way to add the transition if it is not already there. Sorry, It is not smart but it gives the result.

    The workflow is using the Add Fixed element" command:

    • set only point 1 (radius, pick a point close but it is not required to be on the alignment) and the length: it creates a transition in space.
    • then connect the transition to the arc
    •  then use the floating line command



    Answer Verified By: Bernard Jones 

  • Thanks jpln, very useful!

    It's a shame that Bentley have discontinued MX Rail without building in the same functionailty into BRT!

    I found another workaround to *free* a straight with transitions - I use multiple element regression.

    I really miss the MX dynamic regression tool, so much better than the BRT workflow :(
  • Thanks jpln.
    After using RailTrack for many years I did not know that one could edit a curve set as you showed in example 2. This is very helpful!

    Neville du Plessis

    Rail Design

  • I agree it is à Nice tool on MX but not sure It is So ahead on term Of productivity. Quick analysis and multiple elements regression analysis are powerful tools as well. But it is a Long Time since i did it in MX. Looking forward to see what we Will Be able to do in Openrail



    Answer Verified By: jpln 

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