AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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mike
Posts: 1
Registered: ‎10-28-2013
Message 1 of 3 (142 Views)

reverse curve on alignments

142 Views, 2 Replies
10-28-2013 12:48 PM

 I need to put a reverse curve on an alignment.  I have tried using two free curve fillets,(beetween two entities, radius).the first curve was fine, but it would not allow the second curve.  I also tried using a floating curve ( from entity radius through point) first, but it did not work.

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g_k50
Posts: 68
Registered: ‎03-05-2009
Message 2 of 3 (140 Views)

Re: reverse curve on alignments

10-28-2013 12:56 PM in reply to: mike

On the Home tab, the draw menu, drop down the curve menu, select the reverse curve item.

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sboon
Posts: 2,109
Registered: ‎11-08-2005
Message 3 of 3 (113 Views)

Re: reverse curve on alignments

10-28-2013 05:01 PM in reply to: mike

The floating curve and free curve combination should work.  Make sure that the floating curve is longer than necessary so that the software is able to solve for the intersection point with the free curve.

 

Sometimes it is easier to start by creating a set of curves that don't have the radius you want but will definitely work geometrically.  I started this one with a 250m floating curve and I'm going to use a 500m free curve for now.  Once it's built I can drag things around and edit them to suit.

 

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