Subassembly Transitioning

[Anonymous]

There have only been a few posts on this subject (that I was able to find)
and a google search didn't yield much more.

I'm wanting to (if at all possible) specify a starting/ending width of a
pavement subassembly so that creating simple lane widening is as easy as
specifying the transition range within the corridor, and the starting/ending
subassembly width.

If it is possible but requires VBA within the subassembly, could anyone
please give me a nudge in the right direction as to how one would do such a
thing? I haven't looked extensively into the VBA idea, but I want to avoid
that for obvious reasons if there is a simple, built-in solution that I'm
just not seeing.

As always, TIA.

[Anonymous]

Tom,

There are two ways to do this with a secondary alignment, and with a VBA
routine.

With the secondary alignment you would draw that to represent the edge of
pavement with the taper that you need. Of course if you are going around a
curve, this becomes much harder.

With the VBA solution, you would need to take one of the existing lane
assemblies (I would start with the lane outside super) as your starting
point. Read the help file on how to make a new entry in the ATC file, and a
new macro. The modification you would make to the subassembly would be to
add three more parameters to hold the starting station of the transition,
the end station, and the change in the width that you want (you could also
change depths...). Then inside of the VBA code you would check to see if the
section you are working on is inside of the range, if so, you would
calculate the percentage along the section you are, and add that much of the
delta to the width of the lane. In the ATC file, if you give the type info
of the two station variables "6", they will display in station format.

FYI, I'm teaching a class on sub assemblies at AU this year, and this may be
a nice little tutorial for that class...

Cheers,

Peter Funk
API Product Manager
Autodesk, Inc.

[Anonymous]

Thank you very much for the head start.

....may have to try going to AU.

; ; "Inc." wrote in message
news:4964811@discussion.autodesk.com...
Tom,

There are two ways to do this with a secondary alignment, and with a VBA
routine.

With the secondary alignment you would draw that to represent the edge of
pavement with the taper that you need. Of course if you are going around a
curve, this becomes much harder.

With the VBA solution, you would need to take one of the existing lane
assemblies (I would start with the lane outside super) as your starting
point. Read the help file on how to make a new entry in the ATC file, and a
new macro. The modification you would make to the subassembly would be to
add three more parameters to hold the starting station of the transition,
the end station, and the change in the width that you want (you could also
change depths...). Then inside of the VBA code you would check to see if the
section you are working on is inside of the range, if so, you would
calculate the percentage along the section you are, and add that much of the
delta to the width of the lane. In the ATC file, if you give the type info
of the two station variables "6", they will display in station format.

FYI, I'm teaching a class on sub assemblies at AU this year, and this may be
a nice little tutorial for that class...

Cheers,

Peter Funk
API Product Manager
Autodesk, Inc.