Quick Start Guide for 12D User Starting OpenRoads?

12D user here designing a road in OpenRoads for the first time. Never used any Bentley design products before. Used a lot of MicroStation for drafting though.

After watching through a lot of tutorials on Bentley LEARN, I have determined that the work flow is largely similar to 12D.

For this project, I imagine I need to:

1. Create design line geometry [Question: how to show other constraints such as a bridge model above the road in profile view?}

2. Generate a platform surface - projecting a string  at 3% crossfall out to 50m on both sides [Question: should I just make a DTM out of the platform strings?]

3. Generate edges of lane from a template with the vertical levels draped onto the platform.

4. At intersection, create kerb return geometry based on the platform surface and existing surface (where kerb return matches to existing kerbs on the intersecting road) [Or two DTMs at the same time? Or a DTM and a mesh surface?]

5. Apply linear template of kerb to kerb returns at intersections as they are not part of a corridor [Question: are linear templates just normal templates applied without corridor?]

Any pointers?

Thanks.

  • 1. You may use the Create 3D Cut: https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/41757/video-create-3d-cut-in-profile

    2. It depends, why 50m? any reason for this?

    3. What is the question?

    4. Not sure to understand the question, can you clarify?

    5. Yes, it can be used where a corridor doesn't fit like for intersections.

    May be if you could illustrate what you want to design it'd help.

  • I would

    1. Create horizontal geometry (alignment and plan view graphics of my roadway)
    2. Design vertical geometry (Profiles)
    3. Develop templates for the typical cross sections of my roadways
    4. Create a corridor applying my horizontal & vertical geometry, assigning my templates to station ranges along my corridor.
    5. Apply linear templates and other modeling tools to adjust those areas (such as intersections) that don't completely model from templates.

    You lost me at "platform surface" - I have no idea what that might be analogous to. Since I have no idea what that its or what it is being used to accomplish, I cannot follow your procedure.

    MaryB

    Power GeoPak 08.11.09.918
    Power InRoads 08.11.09.918
    OpenRoads Designer 2021 R2

        

  • I guess the main confusion comes from the platform surface.

    We often, from the same control line, create 2 corridors or its equivalent in my other software.

    The first to control the crossfalls only. The second to control lane widths and other details.

    The 1 that controls crossfalls is the platform.

    In the other corridor, all lane edges have:

    Horizontal control = lane width

    Vertical control = force to platform surface. 

  • Here, you don't need two corridors for one road. Plan elements control the majority of the horizontal (lane width, etc.) controls, profile elements determine the vertical control, and templates control crossfall and other cross sectional geometry. And unlike a "platform surface" templates can allow a great degree of flexibility in cross slope, side features and existing ground tie-in elements.

    But it does sound like a very different design workflow, and there may be no direct one-to-one correlation between what your software does and what OpenRoads does.

    MaryB

    Power GeoPak 08.11.09.918
    Power InRoads 08.11.09.918
    OpenRoads Designer 2021 R2