CORRIDOR MISSING DITCH

[Anonymous]

We're having a probelm when running a corridor and I'm sure its just something not set right...created a alignment, profile and assembly with road-shoulder-and ditch. Anywhere the proposed top of shoulder on either outer edge is above the existing ground level, it does not draw the ditch in place. It only draws a short line segment from the top corner down to the existing surface. If the top of shoulder is below existing grounf level, it draws the ditch correctly. So what I'm I missing here....any thoughts??
Thanks
Chris

[Anonymous]

typically you dont create a ditch in a fill situation so the assembly is
acting correctly. If you have to force a ditch and that ditch is a typical
shape then you might have to look at using a different assembly or create
the assembly with the ditch "drawn" in using generic link sub-assemblies and
then attaching a daylight sub-assembly.

What daylight sub-assembly are you using. Right click on it in the catalog
and choose help to see if it is able to meet your design criteria.

I have not used alot of ditching so someone elese may want to provide a
better explanation.

Robert Howell

wrote in message news:4873250@discussion.autodesk.com...
We're having a probelm when running a corridor and I'm sure its just
something not set right...created a alignment, profile and assembly with
road-shoulder-and ditch. Anywhere the proposed top of shoulder on either
outer edge is above the existing ground level, it does not draw the ditch in
place. It only draws a short line segment from the top corner down to the
existing surface. If the top of shoulder is below existing grounf level, it
draws the ditch correctly. So what I'm I missing here....any thoughts??
Thanks
Chris

[Anonymous]

my only concern is that, yes it is a fill situation, but it is ignoring the ditch in as little as 0.05' of fill...which to me is kinda wierd.....I could understand if the entire ditch would end up floating in mid air, but its not.....is there a easy process to get this to work? Is there some kinda parameters I can set up for the depth of fill required before it ignores the assembly??

[Anonymous]

I happened to have ran across this exact same situation this afternoon. I'm
not a VBA expert by any means, but it appears that the DaylightStandard
subassembly has a slight error in it when it is testing to determine if it
is in a cut or fill condition (I'm using C3D 2005 so it may have been
corrected in 2006). What I found in the code for that subassembly was the
following line is incorrect:

If oRwyState.IsAboveSurface(oTargetDTM, oAlignment, oOrigin)
Then

The "oOrigin" should be replaced with "oCutTestPoint" in that line and read
as follows:

If oRwyState.IsAboveSurface(oTargetDTM, oAlignment,
oCutTestPoint) Then

The writer basically created code to test if the outer edge of the ditch
would be in cut or fill, but when the code actually runs the test, it uses
the origin of the subassembly instead of the actual test point.
**DISCLAIMER: Again, I know very little about VBA, so maybe some of the
more knowledgable members can verify if what I found is indeed correct.
However, I made that one change and rebuilt my corridor and it worked like a
charm. Any feedback from some of the VBA experts would be appreciated.


wrote in message news:4873393@discussion.autodesk.com...
my only concern is that, yes it is a fill situation, but it is ignoring the
ditch in as little as 0.05' of fill...which to me is kinda wierd.....I could
understand if the entire ditch would end up floating in mid air, but its
not.....is there a easy process to get this to work? Is there some kinda
parameters I can set up for the depth of fill required before it ignores the
assembly??