Driveways in Cross Sections

I am trying to create cross sections for a few various size corridors.  I started with the simplest/shortest corridors.  I have a template that is controlled by parametric constraints as to what object (curb and gutter, ditches, etc.) will appear.  One of them is a ditch with a driveway.  I only want it to appear at a specific station and have identified that in inRoads using the parametric constraint.  I then set the midpoint of the drive as a key station.

Then I created cross sections a set it to display key stations.  It does but does not show the driveway instead it shows the same ditch profile that is both before and after this driveway.  What can I do to make it show up.  The odd thing is that it did once yesterday and then today when I rerun them it will not.

 Thanks

 

inRoads V8.08.00.46

Parents
  • I would set the driveway template over a range of stations to allow the components and triangles to form properly.

    Marc

  • Marc is correct. A single station that contains different points and components will not display correctly. There needs to be at least two drops in order to properly display a component in a cross section.

    One suggestion is to draw a line across the drive openings. Import those lines as horizontal alignment targets. They can be a single discontinuous alignment. Example (Drives Left or Drives Right) Then have the template perform a test where the target is alignment. This can be a do not construct End condition located some where above the template. This will not affect the model. The driveway component(s) would be a child of the EC so it would only display if the EC evaluates to true. Then you can import the same graphic driveways as Event points for the mainline (controlling) alignment. Use the Event points option in the Roadway Designer so you autmatically get a processed station at the start and end of drive openings.

    Good luck and let us know if you run into any problems.

     HTH

    Thomas 


    This is a test

  • I had tried that in the past and didn't have much better luck but will give it a try.  I wonder though what the best way to get the driveway across its entire length to match into existing with a reasonable slope and length.  I have in the past picked the midpoint and then set the slope to match at each individual driveway but that has been time consuming.  I tried the project to surface option but the length of the driveway often has to change and so it still means individual edits.  Also a few months back I used to use the end condition parent child relationship for turning components on and off but ran into many problems and I think it was Denis Shaffer who suggested instead using null points and their horizontal relationship to an existing point like a centerline  to do this.  The end conditions had a habit of conflicting with display rules. 
  • The parent/child relationship does not utilize component display rules. Denis is correct that attempting to use CDR with EC can cause some unpredictable results. I have a sample data set that generate drives that I can supply on request. I think I used the Right of Way line as an additional control for the drive limit.

    Regards,

    Thomas


    This is a test

  • Have the basics working now am still wondering about what the best way to set the slopes and lengths to match existing grade would be.  And in my situation some displays rules would be invoked of is NOT displayed for another component when driveways appeared. 
Reply Children