Set Slope Along Feature? Rapid response appreciated!

I need to fudge breaklines around curves in a survey.  I have a lot of them to do and I need to do them quickly regarding a job for which inadequate time was allocated and surveys were requested and received way to late in the game.  I need to be able to place a linestring with the end points at specific elevations, and the intermediate vertexes be placed at elevations based on a constant slope (which I don't have time to compute) along that element.  Creating alignments and profiles and generating a 3D alignment is one way but it is much too slow,requiring an alignment and profile for each breakline.  Generate Longitudinal Feature is another option but it creates vertexes that I don't want and may move or eliminate the vertexes I have placed (excluding the endpoints).  Set Slope Along Feature sounds like it should do the job, but it seems to want information in addition to the element itself and the beginning and ending elevations - like I need to compute the slope along the element for each and every breakline.  there is not time for that.  If this tool won't do that, is there a tool that will?  If there is not, although it will be too late for this job, can we have such a tool or add settings to existing tools to permit this?
  • Hi Larry,

     What about using the Edit Feature Point Command?  You can insert points along your break while controlling the slope (have to hit the "More" button on the right to activate this option).

     Hope this helps.  Take care,

     Alan Gilbert

    Bentley Civil

  • Do you have Geopak Site or Power Civil? If so you can profile the curb returns without the need to create alignments by using the Element profile tool. Once you apply the profile to the element you can generate a 3D line from it and use it as a breakline.

    Neil Wilson (aka Neilw)

    Power Civil v8i 08.11.07.245

    AutoCAD Civil 3D 2018

  •  I only have InRoads, but I think I have something figured out.  It's not as straight forward as I'd like, but it is considerably faster than than anything else I've tried.  I use InRoads' Place Feature command to create the breaklines graphically and at the same time create the feature in a temporary DTM; the Set Slope Along Feature command to set the intermediate points to elevations on a slope between the end points; delete the original graphic (MicroStation Delete); then redisplay the feature from the temporary DTM.