AutoCAD Civil 3D General Discussion

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Valued Contributor
Ievgen
Posts: 59
Registered: ‎06-26-2012
Message 1 of 11 (517 Views)

Designing Corridor of Ramp (Cloverleaf)

517 Views, 10 Replies
12-06-2012 11:42 PM

Hi everyone!

Can someone tell if it was possible to create such intersections as I drew in attachment? At least give me a tip where to look for. Thank you.

attachment.jpg

Active Contributor
cadplayer
Posts: 29
Registered: ‎11-23-2009
Message 2 of 11 (510 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 03:06 AM in reply to: Ievgen

Draw a line from centre of arc perpendicular to your main road line or I missunderstand you ?

Valued Contributor
Ievgen
Posts: 59
Registered: ‎06-26-2012
Message 3 of 11 (502 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 04:29 AM in reply to: cadplayer

I need to create a corridor, but my axes do not cross, so how can I create a corridor without layouts been crossed? May be there is a kind of offset ?

Active Contributor
cadplayer
Posts: 29
Registered: ‎11-23-2009
Message 4 of 11 (500 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 04:39 AM in reply to: Ievgen

You can extend your corridor with "target lines"

Look at the picture, click your corridor properties and than on button target and you get window there you can expand your corridor to an select polyline (your road axis)

Valued Contributor
Ievgen
Posts: 59
Registered: ‎06-26-2012
Message 5 of 11 (496 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 05:06 AM in reply to: cadplayer

Yes I know that, the real problem is that I can't set pedestrian sidewalk on a main road which is crossed by a ramp passageway

Active Contributor
cadplayer
Posts: 29
Registered: ‎11-23-2009
Message 6 of 11 (493 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 05:26 AM in reply to: Ievgen

I´m little confused, you have a main road and would like a  pedestrian sidewalk but it crossed with the ramp passage. What exactly is th problem there. Can you do it with two corridors ? Explain little bit more please !

Valued Contributor
Ievgen
Posts: 59
Registered: ‎06-26-2012
Message 7 of 11 (490 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 05:44 AM in reply to: cadplayer

Don't have a Civil by the moment so I tried to explaine problem by a picture. Normally intersection is designed by picking a point where two axes lines of 2 roads are crossed so the intersection could have 1 point in common. But in this case they don't interfere with each other. Can still the intersection be designed? (because there is a gap, showed by a green dmension line) or do I need to change the geometry of the axis?

Without having the point of intersection the macros of creation the intersection can't be run, without it I can't create layout offsets to be as target points for assemblies.

Valued Mentor
fcernst
Posts: 1,089
Registered: ‎01-07-2011
Message 8 of 11 (483 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 06:20 AM in reply to: Ievgen

Strive to do it with one Corridor and two Baselines, each with their own Alignment and Profile. This is the strength of the Corridor object.

Fred Ernst, PE
C3D 2015
Ernst Engineering
www.ernstengineering.com
*Expert Elite*
Jeff_M
Posts: 4,194
Registered: ‎07-22-2003
Message 9 of 11 (478 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-07-2012 07:04 AM in reply to: Ievgen

You won't be able to use the Intersection Wizard for this. But you can manually create the offsets, profiles, etc. to get what you need. The only thing is they will not be dynamically linked to each other. This is how we designed intersections prior to the Intersection object being available.

Jeff_M, also a frequent Swamper
*Expert Elite*
sboon
Posts: 2,074
Registered: ‎11-08-2005
Message 10 of 11 (410 Views)

Re: Designing Corridor of Ramp (Cloverleaf)

12-09-2012 11:08 PM in reply to: Ievgen

I taught a course at AU on how to deal with this scenario.  When the 2012 class materials go online (supposed to be in about 2 weeks) you can search for CI2160 - Intersections from the Inside Out.  If you cannot wait that long then PM me and we'll arrange to get you the documents and sample drawings somehow.

 

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