Over the past week or so I have had a couple of Road Alignment Questions that I thought worth capturing here for all you Roadies out there
1) I have a HAL and I have been given a bunch of elevation values at Stations along the HAL - how can I create a VAL from these Station / Elevation values?
2) I am building alignments for Curb and Gutter Machines that utilize provided Curb Lines as alignments - however I have to add a straight tangential section at the start of the alignments for e.g. 100' before the start of the line / curb so that the machine has a run in length to get it on line and oriented before it starts paving. If I create a HAL / VAL from a Linestring, how can I add the 100' of additional line to the start of an alignment?
I have provided answers below as well as a short video on how to do these two things