AutoCAD Civil 3D General

Posts: 160
Registered: ‎01-09-2007
Message 1 of 4 (95 Views)

Gap in Corridor Surface

95 Views, 3 Replies
02-07-2014 10:00 AM

I've been trying to fix the contours of a corridor surface taht was handed to me.  It's not even a big corridor, just a cul-de-sac.  I've resolved many issues so far, but cannot figure out what's causing this.  Here is my corridor in the object viewer:


And here is the surface created from that same corridor:


Any reason as to what may be causing this weid gap?  I've adjusted the stationing, frequency, verified targets, and rebuilt several times.  I've even created a new corridor all together. 


Just so you know. . .I've got an alignment going around the bulb of the cul-de-sac where my assembly ties in (ties in at the back of curb).  I then target my lane back to the main road centerline alignment.  works fine on the top right, but not on the top left. 


Any ideas?


Thanks in advance.

Jason Porter
Enceptia Technical Advisor & Civil Solutions Blogger
*Expert Elite*
Posts: 1,757
Registered: ‎09-05-2006
Message 2 of 4 (90 Views)

Re: Gap in Corridor Surface

02-07-2014 10:13 AM in reply to: PorterCAD

It has been a few years, unfortunately, since I have done a cul-de-sac but I seem to remember that it was preferred to run two alignments and meet in the back.



Infrastructure Suite 2014 Premium SP 1

*Expert Elite*
Posts: 502
Registered: ‎01-14-2009
Message 3 of 4 (71 Views)

Re: Gap in Corridor Surface

02-07-2014 11:25 AM in reply to: PorterCAD
Also, when ever I used to do cul-de-sacs and even now when I do returns, I create a 10' tangent section and the end of the returns. Most issues seemed to be resolved with that workflow.
Lisa Pohlmeyer

C3D 2012 SP4, C3D 2015
Please use "Accept as Solution" if this solved your issue.
Posts: 160
Registered: ‎01-09-2007
Message 4 of 4 (67 Views)

Re: Gap in Corridor Surface

02-07-2014 11:59 AM in reply to: LisaPohlmeyer

Thanks! !  Both your suggestions helped in this case.  I had to extend the tangents out by about 10 feet like Lisa said, and I created two separate alignments along the bulb, as suggested by WFBerry.  That has seemed to resolve this issue.


Thanks again!

Jason Porter
Enceptia Technical Advisor & Civil Solutions Blogger

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