Suggestions for Cul-de-sac Grading

[Anonymous]

I need some help on grading my cul-de-sac. One area on my cul-de-sac is
not grading to the centerline. I'm not sure if this is a limitation or
operator error (or both). Shifting the centerline closer to the
southern EOA makes it work, but should I have to do this? It also
pushes my point of tangency further down the street than I want it.

Cul-de-sac template is run off of EOA alignment and profile with a basic
transition lane used to run to the CL

Darron Agawa
v2006, SP1

[Anonymous]

This has been seen when stretching a half street section to a "CURVED"
centerline. A work around that was suggested by Autodesk is to use two
Alignments (thus two Profiles) along you EOA. One to the Middle Of Curve.
One after MOC.

I was hoping this was fixed. :^(

Angel Espinoza
KETIV Technologies


"Darron Agawa" wrote in message
news:4894484@discussion.autodesk.com...
I need some help on grading my cul-de-sac. One area on my cul-de-sac is
not grading to the centerline. I'm not sure if this is a limitation or
operator error (or both). Shifting the centerline closer to the
southern EOA makes it work, but should I have to do this? It also
pushes my point of tangency further down the street than I want it.

Cul-de-sac template is run off of EOA alignment and profile with a basic
transition lane used to run to the CL

Darron Agawa
v2006, SP1

[Anonymous]

I noticed the same thing on a cul-de-sac I did a couple of days ago. My centerline curve was flatter and resulted in a very small gap.

Now I know why the webcast on cul-de-sac grading used two alignments and profiles.

I have an idea that might work. Make two more assemblies. One for the roadway entering the cul-de-sac with L & R transition lanes and a copy of the current cul-de-sac assembly without the lane transition. Add a new region to the centerline alignment and use the first new assembly to fill the paved surface up to the radius point of the cul-de-sac. (stretched to the edge) Then split the cul-de-sac edge alignment into three regions. Use the new edge assembly to along the edge of the filled in area at the beginning and end of the cul-de-sac alignment. Use the current cul-de-sac assembly for the middle of the alignment to round out the end.

[Anonymous]

Here's what mine looked like. At this angle you can see a little sliver of a gap along the centerline.

I have sidewalk half way around. I wish the transition to no sidewalk were smoother but I'm not sure how to do it.

[Anonymous]

Has anyone done any experimenting on this? What triggers the situation? When the EOA alignment goes beyond the halfway point or beyond the point where a projection of the CL. would intersect the EOA alignment?

[Anonymous]

This issue has been discussed in the past. Check out my post on June 8th,
"Cul-de-sac links not joining," this will show you how I've been able to
resolve the issue.

hth,
sm
--

Scott McEachron
The D.C. CADD Company - Dallas


wrote in message news:4897910@discussion.autodesk.com...
Has anyone done any experimenting on this? What triggers the situation?
When the EOA alignment goes beyond the halfway point or beyond the point
where a projection of the CL. would intersect the EOA alignment?

[Anonymous]

Scott: I read through the posting you suggested but I don't think its the same issue I'm seeing here. Have a look at the attachment to the top posting and you'll see that here the problem is with the transition lane not being properly connected to a curved offset alignment.

[Anonymous]

Notice how I needed to skip the frequency for about a 1' interval at the
midpoint station at the back of the cul-de-sac (the midpoint of the
alignment)? You might try the same thing at the pc's and pt's along the
alignment through your cul-de-sac...

hth,
sm
--

Scott McEachron
The D.C. CADD Company - Dallas


wrote in message news:4899179@discussion.autodesk.com...
Scott: I read through the posting you suggested but I don't think its the
same issue I'm seeing here. Have a look at the attachment to the top posting
and you'll see that here the problem is with the transition lane not being
properly connected to a curved offset alignment.