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Using Station Equations for Decreasing Progression

  • 1.  Using Station Equations for Decreasing Progression

    Posted 11-02-2020 12:20

    Recently I came across an issue that I'm not sure has been addressed here, but found the fix for it.

     

    I have an alignment with 5 or so equation stations, the last one decreasing in station rather than increasing.

    For example:

    "Zone 5" runs from station 708+57.21 to 798+15.60, with the equation at the end being 798+15.60 (BK)/ 306=32 (AH).

    From 306+32 (the start of zone 6) the stationing decreases, while left and right orientation remains the same (to the end of project, 295+00).

     

    To achieve this I entered the equation station to complete "zone 5" (798+15.60 BK/ 306=32 AH), and created another equation station with the "Back and Ahead" stations both set to 295+00. This completed "zone 6", reversing the progression while also leaving the left and right orientation as the plans intended.

    (for reference, see attached image)

     

     

    -David

     

     

     

     



  • 2.  Re: Using Station Equations for Decreasing Progression

    Posted 11-02-2020 12:51

    Great post David

     

    Alan