How to define the station control from the end of alignment

[bpoleuca]

Hello,

I please somebody to tell me if it's possible to define the stationing of the alignment from the end of the alignment till the start.

I have a special situation where the end station is fixed in one point (ex. km 3+125,00) and till there I can change the alignment.

I want to be all the time the end in one station value.

Greetings

[asad55db]

i think its better to introduce station equation at the end of ur allignment. hope u find the resulsts :smileyhappy

[bpoleuca]

can you send me a link to a page to see how I must do this?
I never do this

Thanks

[asad55db]

click on alignment go in alingnment properties than station control and  there u find the station eqation select it and locate the point where u want to insert the station equation. once added station equation it means after that station stationing will not change if alignment is changed before that staion point.

try this u will understand.

[bpoleuca]

Thanks.

What I want is all my alignment from the end till the start to be changed but to have allways the final station I want.

[david.zavislan · Accepted solution]

You can do this without station equations.  Go to the same tab in the Alignment Properties window.  In the reference point section you can select the endpoint of the alignment and specify the station at that location.  The program will calculate backwards from this point to generate the starting station for the alignment.

[mathewkol]

I believe David's answer to be the most effective. I would not use a station equation in this instance.

[sboon]

Check your alignment labeling after doing this.  We've seen some strange results when the station control point is not in the first segment of the alignment.