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Assembilies for T-Shaped Intersections

5 REPLIES 5
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Message 1 of 6
StephenP9
417 Views, 5 Replies

Assembilies for T-Shaped Intersections

Hi,

 

I'm currently upgrading a portion of road with two intersecting roads off of it. I have built a corridor but it's not what it should look like. I believe the problem is my assembilies, i am currently only using two assembilies: 1 for my main road and 1 one for the intersecting roads. I'm fairly new to the Civil 3D world and have been getting by with online videos and posts. My question is how many (full/half section) assembilies should i be using when creating a t-shaped intersection?

 

Thanks,

5 REPLIES 5
Message 2 of 6
doni49
in reply to: StephenP9

Welcome to the forum!

 

Take a look at this video.  I think it should be helpful.

 

http://au.autodesk.com/au-online/classes-on-demand/class-catalog/2012/autocad-civil-3d/few-roads-lea...

 

Here's one snippet from the video.

 

IntersectionCorridorAssembliesNeeded.png



Don Ireland
Engineering Design Technician




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Message 3 of 6
Neilw_05
in reply to: StephenP9

How many assemblies you will need depends on the geometry. For a perpendicular intersection which is the best case scenario you will need:

1 full assembly for each road (optional?)
1 curb return assembly for the lt and rt side of the int.
1 lane only assembly for each road.

If the intersection is skewed you will need more. If the edge assemblies are different at the ends of the curb returns you will need more. Any scenario with variations requires more.
Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com
Message 4 of 6
Neilw_05
in reply to: doni49

You only need half sections if the intersection has a blended crown. If the crown is maintained thru the int then you don't need a half lane.

Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com
Message 5 of 6
Neilw_05
in reply to: Neilw_05

Supplement: In a crown-thru int. you would need a full lane with an edge on one side. In a blended you would need a 1/2 section. So add one more assembly to the best case scenario.
Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com
Message 6 of 6
Neilw_05
in reply to: Neilw_05

You don't need a lane only assembly for the best case scenario with crown thru. Instead you would need a Lane with one edge for the main road.

I am fatigued from 10 hours sleep in 3 days.

Neil Wilson (a.k.a. neilw)
AEC Collection/C3D 2024, LDT 2004, Power Civil v8i SS1
WIN 10 64 PRO

http://www.sec-landmgt.com

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