I am working on a pavement rehabilitation project where the bulk of the work is milling, resurfacing and some widening. I only need to create cross sections (hence, corridor) in the area we have widening.
I have been told that we don't need a proposed profile because it's a simple mill/overlay. I do not know, however, how to create a corridor without a profile and I'm not entirely certain how to generate a profile from the existing ground.
I think that I could create a point (null?) that I could project to surface for my "centerline" and control my template from that. It gets even more fun in the areas where we have medians of various sorts...
Am I overthinking this?
I am watching the Overlay, Stripping and Widening learning path course but they haven't really talked about how this works if you don't have a profile yet. Maybe they do further on?
The client might not require a profile but I have always created a profile for mill and overlay projects. All you need to create a profile for the model is a horizontal alignment and terrain model which it sounds like you have. To create a profile from the terrain, you just simply set the existing ground line as the active profile for the horizontal alignment. If you wish to have something smoother, then you can choose to create a profile by best fit, selecting the existing ground as your reference profile. From there, you can define the parameters for the crest and sag curves of the existing profile.
Jennifer Perry
Highway Design | Johnson, Mirmiran & Thompson, Inc.
Hey Mary, I've always set a floating template origin for RRR (milling) projects. Just have your component CL have a project to surface on both ends (CL & EOP) unless you're needed to do any cross slope correction. The initial corridor placement will need an "Active" profile, which can be your existing terrain element via profile from (zero) offset, however afterward you can set that to follow any specific profile if necessary later via the context sensitive popup properties.
Bentley Accredited Road Designer | Bentley Accredited Road Modeler
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