How to Create the Roundabout Assembly in Civil 3D 2012

[Anonymous]

Dear All,

I would like to ask your valueable information step by step how to create the roundabout assembly and how it should attach in the corridore. I will be very much thankfull to all experts here.

Thanks & regards...

[MikeEvansUK]

Search in this forum. You will find what you are after in a previous post by myself.

[VincentSheehan]

I'm not sure if you have Autodesk Vehicle Tracking. It has a cool roundabout corridor tool. It's a lot easier than starting from scratch.

Autodesk Vehicle Tracking: Roundabout Corridor Tool

[MikeEvansUK]

Agreed however I recommend that you need to learn the manual method first to understand what it is doing and how to overcome problems should they arise where non standard designs are required.

[VincentSheehan]

I agree.

[Anonymous]

Thanks for the reply. I actually tried to search.. I am in trouble how to create the assembly for it. As it is showing one side assembly only. Only if you can send me the link I will be grateful for that.

Thanks & regards..

Eng. Imran S. Albalushi
DUBAI.

[Anonymous]

Add a round-a-bout with the wizard and let the software create it. then edit to suit

[Anonymous]

I am asking that which assembly I need to create first of All. Could anyone help me out please. I am confused how to create assembly for it. And which type should be?

[MikeEvansUK]

Do not use the Roundabout tool if you are in UK.

The roundabout tool does not generate the nessesary geometry for flares on entry / exit, it also wants to place the roundabout at the intersection of alignments which we do not like as it does not help with Deflection. We mainly use the Stockdale Method here.

For the corridor we work from the inside out. See Jacks Tutorial. Civil3d Stockdale

[Anonymous]

For the assembly, I create it like I would for a curb return. Attachment will be on the outer return of the RAB (edge of asphalt alignment), and attach inward to the CL alignment of each road leg, and the Circulatory alignment created from RAB builder. When setting up targets for stretching the road subassembly, choose these 3 alignments, and the option to "Target to Nearest Offset"