I am currently attempting to station the following:
I was at the point of putting in the stations when I was made aware that there were station equalities that needed to be addressed. At the intersection of the green and blue lines there are two stations: P.O.T. STA. 18+81.85 NORTH AVENUE (the blue line traveling west to east) = P.O.T. STA. 50+00.00 ARCH STREET (the green traveling north to south).
As I understand it, to address the station equalities, and to station the blue line to start) I would have to measure the distance from the end of the blue line to the intersection of the green and blue lines, and then subtract that number from the blue line station. The resulting number would be the station at the start of the line.
Still new to alignments and stationing, I put that number in to the stationing dialogue box:
...and hit apply.
Not quite the result I thought it would be.
I have a couple of sources but nothing that explains what I should have done. I have a vague idea that STA 18+81.85 might need to go into the Ahead Station, but I've nothing to confirm that.
Anyway, is there a better definition of "station equalities" than what I'm using, and what *should* I be doing in order to get the stationing correct. I have eight of these, so if I get the first one, one would think the rest should fall into place.
thanks!
Update:
I have been moving along nicely in Power Survey SS2 doing alignments for the project below. I was saved, in large part, by Ray Thwaits.
Up until now, everything went left to right and north to south, except for the salmon-colored line at the right. That one is going from south to north. I had even used the "changed direction" macro to be sure that the line's direction was south to north. Apparently that doesn't matter. The process for putting in stationing seems to only travel north to south.
Station locks got me out of a jam. Surely there's a setting to change the direction of the stationing! Once again Help doesn't , and the "InRoads ROW Fundamental" book isn't clear.
Thanks!
That shouldn't be.
Have you reviewed the alignment (Geometry>Review Horizontal...)? Where did you find the Change direction tool? I suspect you used the MicroStation tool which changes the direction of graphics elements. You need to use the InRoads Transpose tool (Geometry>Utilities>Transpose...).
It's important to keep in mind the graphics in the design file are simply a picture of what's in the geometry project (.alg). You can make all the changes you want to the graphics and you won't change your geometry.
Well, shoot! That was easy! ;) Yep, I had used the, I guess, MicroStation macro "change direction."
I was actually holding my breath when I looked for this tool. I was sure this was another item not in Power Survey. Thankfully, it was!
I'll put in a good word with the Universe on your behalf! ;)
This is another instance where I couldn't figure out the right question to ask. In the Fundamentals book, it does mention transpose, but only if your fixing an error message "transpose ?" when reviewing geometry. However, since Power Survey doesn't have the "Horizontal Elements" option on the menu, you never really get to the transpose option to fix things.
At lest, for now, I have an idea what to use, when to use it, and how to find it.
Thank you again, good sir!
It doesn't help that "transpose" is kind of a highfalutin word for change direction or reverse. Somebody must have gotten a new thesaurus when they decided what to name that command.
Be my ;guess! ;)
Tomorrow's challenge will be to get the text the right way round.
I am making notes of all this, by the way.
You're moving out of my bailiwick. I've always asked my drafters to handle presentation.