Merge Rail Long Section with Overhead Plan Route

Hi,

A little stumped on how to get the result I'm after. 

Here I have an elevation long section (bottom red line) and an over all plan view of the new rail route (top red line). White lines mark 100m incraments, total length is 1800m. I need to merge the two to produce something similar to the top red line but when viewed in isometric view you'll be able to see the rise and fall in the route shown in the long section.

All I have access to is MS SS3, is there a way to wrap one line along the path of another but keep Z levels?

Josh

  • I was theorizing  how it could be done,  I have done it before but not with his data set.

    the sloping  horizontal  was assumed to be  real 3d  vertically  and the curve is 2d geographically correct with z=0

    then we would  put the 2d curve in a 3d file own its own with z=0 ( also it would be chained as one element)

    the  slopping  line ( which turns out is really only 2d in a 3d file)  has to be interpreted to work out  the relative Z based on the  slope and relative to each end if we can create a new 3d file and ref attach our new curve file ontop we can work out the  extend or boundary  for our  surface extent , then we can create a polygon left to right that  would be the  same  slope above  0 as was the  sloped line but has z values 

    Then we can turn this  polygon into a surface, then use the  stencil tool to drape  the curve onto the  surface ( just like in inroads but all with microstation)

    The result is the  curve has  x,y  and  now real z values not  0...

    The hard part is creating the  surface from the 2d line that was drawn in a 3d file originally 

    I  have done this with the stencil tool  in ss3 before  but I created the surface from a survey file  with either points or contours... so it  should be achievable for someone that doesnt have access to inroads and only msnt ss3  minimum...

    Lorys

    Started msnt work 1990 - Retired  Nov 2022 ( oh boy am I old )

    But was long time user V8iss10 (8.11.09.919) dabbler CE  update 16 (10.16.00.80) 

    MicroStation user since 1990 Melbourne Australia.
    click link to PM me 

  • I don't see how this would work. You're projecting the alignment (the curve) whose points won't fall on the surface, which has the curve points "streched" out to form a straigh line.
  • Unknown said:

    Thought I had the solution but it turned out to be wrong. Going to go with InRoads.

    I have not tried it yet  but  the  3d  line  is the  one with the  z values if you extended, copied it  parallel  it  to cover the  width of the 4 extremes ie  x and y without changing its  z

     then created a surface from those to lines  

    next  chain your curved line  and then  project it  onto the  new surface  this can even be done  with it in a ref file , the  stencil tool should turn your 2d  curve into a 3d  line string 

    We used to be only  able to do this in inroads but since ss3 the  stencil tool can now drape  or project 2d linestring onto a surface...

    Lorys

    Started msnt work 1990 - Retired  Nov 2022 ( oh boy am I old )

    But was long time user V8iss10 (8.11.09.919) dabbler CE  update 16 (10.16.00.80) 

    MicroStation user since 1990 Melbourne Australia.
    click link to PM me 

  • Thought I had the solution but it turned out to be wrong. Going to go with InRoads.

    Answer Verified By: Josh WHEALY 

  • It's been in the back of my mind but I think you're right. All the methods that utilise placing points will almost work but I'll be loosing all the 'to standard' tangent and radii data.

    I'll contact some colleagues that use InRoads. Doesn't look like vanilla MS can do this.