It’s not very uncommon that Project Managers change the beginning and end stations of an alignment. The request may come in early designing phase or after most of the work on the drawing done and after the profiles were being cut. Changing start station of the alignment is really not a task that should create any trouble to anyone, but if there are objects depending on the alignment, they may get pretty “confused” about the change. Here is the scenario:
After the manager’s request the alignment start station is changed from 630+00 to 0+00. Setting new station in Alignment Properties will update the stations.
Looking at the Profile View Properties may expose what the issue is. If our Station range is set to be “User Specified Range”, which means it is fixed to the range, program will still try to accommodate the stations by station numbers so it will draw a grid starting from 0+00 all the way to the end as we set it (from 630+00.00 to 850+00.00).
To resolve this issue the quickest way is to set the range to Automatic. Unfortunately, this will not work for all in case you have a very long alignment and would like to show multiple profile views. In that case you would have to pick your desired start station and calculate where you want your profile to end. For instance if your custom profile view covered station from 630+00 to 680+00 and you would like to have it now start at 0+00 you would need to use “user Specified range” and maintain the range. After you updated it, your profile view should look the way you set it.