OpenRoads | OpenSite Forum secondary alignment -wrong direction

secondary alignment -wrong direction

I am using a secondary alignment along the outside of an arc. For part of the arc it is correct but for the parts circled in yellow, the slope intercepts are on the inside of the arc. Any thoughts? IR XM 08.09.02.16

Offline Kevin McDonald Tue, Jul 7 2009 9:43 PM
Are your slope intercept points fully constrained (red)? If not, they need to be. It tells them which direction to look to solve.
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Offline Brian L Wed, Jul 8 2009 2:22 PM
Yes, vertical +/-4 and slope +/-1/3 were used.
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Offline Brian L Wed, Jul 8 2009 2:23 PM
Yes, vertical +/-4 and slope +/-1/3 were used.
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Offline Kevin McDonald Wed, Jul 8 2009 5:57 PM in reply to Brian L
How does it look in the roadway designer at one of those stations?
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Offline Brian L Thu, Jul 9 2009 3:00 PM
The cross section looks correct but the plan view looks wrong.
- 2nd ali.png
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