Re: Roundabouts in InRoads.

Dwight Erwin — Sat, 30 May 2009 02:20:12 GMT

Hi Brian,

I have modeled a couple of roundabout projects with this workflow:

First I create a vertical alignment for the roads passing thru the roundabout.

Then I model them with a simple template (just a 2% slope from the center without bothering to have any end conditions) that is wide enough to overlap the entire circle, I then generate an alignment for the lip of curb for each quadrant with the surface that was generated with the wide template visualized on it. I then design a vertical profile using that surface as a guide, and then I create a template from the curb out and model that to the existing ground.

I then visualize the top surface features of the curb, sidewalk, slope intersections etc. as well as the centerline of the roads and then import those graphics as a DTM. To get the splitter islands I drape the design surface at the face of the curb and a line slightly offset for the top of the curb and then move the graphics of the top vertically with a dx=0,0,.5 command

The one problem using this method is the pavement area is a simple surface, not a component so subgrade volumes cant be computed as normal.

Dwight

Re: Roundabouts in InRoads.

Adam Wieczorek — Wed, 29 Apr 2009 13:44:02 GMT

hi,

The post from old discussion groups you brought up, was orginaly posted by Piotr. He explored his post in BeGeneral PL Community Forum (search for the topic: '[IR]Projektowanie rond'). This forum requires authorization and it's in Polish, however some usefull drafts are atached.

Adam.