Generic Overlay and Mill Subassembly

[Anonymous]

Good Morning/Evening/Night fellow AutoCADers,

I am after a SubAssembly that is something inbetween a "generic LinkOffsetAndSlope"  and the "OverlayMillAndLevel1" subassemblies. Below are the requirements I need from it:

     1). Simply target pavement edge alignments and profiles for corridor width and slopes

     2). Have a few pavement depths for putting in various pavement layers

     3). In section view, hatch areas that require regulating material or milling as a result of the profile based corridor.

Basically, I have already undertaken the process that the mill and overlay tool does and have designed an overlay that is both longitudinally and transversely compliant. All I want to do now is show the pavement construction in section view that includes any resulting regulating or milling required.

Maybe there is no Subassembly that can do this or maybe I am missing something obvious. I am open for any suggestions no matter how outside of the box they are.

Thank you in advance for your time.

Kind Regards,

Ross

[Joe-Bouza]

Basically, I have already undertaken the process that the mill and overlay tool does and have designed an overlay that is both longitudinally and transversely compliant. All I want to do now is show the pavement construction in section view that includes any resulting regulating or milling required.

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How did you do that?

[Anonymous]

Through a complex system involving designing longitudinally compliant profiles along pavement edges and the centreline and projecting surfaces from the edges to the centreline at 1% and 1.5% (the accetable range of transverse compliance). Then tweaking the centreline so that it sits within this accetable range and is longitudinally complaint.

I know this sounds like an extensive process to take when the overlay and mill tool exists, however I prefer to have greater control over the longitudinal profile at the edges to ensure compliance over the entire width of the pavement. This can also result in a "tighter" design that requires less milling/regulating material.

[Joe-Bouza]

I think the OverlayCrownBetweenEdges is designed for that?

[Anonymous]

My understanding of that subassembly is that it will produce a crowned pavement based on two edge profiles and a "Crown Height" parameter. My questions are as follows:

1). If the Crown Height has an input value that is set in the assembly, will that then provide a constant transverse slope throughout the corridor? (i.e. If one section has 1% on the left edge and 1.5% on the right, the crown height would be different than if it was 1% and 1%)

2). Would this work on pavements that transition from camber to crossfall?

3). Would the longitudinal profile along the centreline be complaint?

If the answer is yes for 2). and 3). and if there is some allowance for having varrying transverse slopes (1.)) than this would be an amazing time saver and would solve my original question!

Many thanks

[fcernst]

You are going to want to use OverlayMillAndLevel2 to get the longitudinal and cross slope controls you're looking for. You can look at the various Slope Control tolerance cases for this subassembly and choose a tolerance that works for your project.

[Anonymous]

Thank you Fred, however this assembly does not appear to be able to target edge profiles. I supose I could have used this from the start, however it would need to be able to ensure the following longitudinal compliance at pavement edges and the centreline:

1). Profile comprising of straights between curves

2). Slopes no greater than 1.25% or -1.25%

3). Curves with radii of 30000m

4). And a minimum distance between intersection points based on the three slopes involed and a coefficient

[fcernst]

...however this assembly does not appear to be able to target edge profiles..

You can with this subassemby's capability.... I'll leave it as an exercise for you to cleverly imagine how.

You can obviously do 1 through 3 in your requirements, but I don't follow your #4 requirement.

[Anonymous]

Requirement 4 is one specific to runways. If you have a striaght --> Curve --> Straight2 --> Curve2 --> Straight3 than the formula for working out the minimum distance between the intersection points of the curves is:

(abs(SlopeStraight2 - SlopeStraight1) + abs(SlopeStraight3-SlopeStraight2))*30000

In either case, I do not believe these tools can generate the surface to the compliance requirements that I have.

Eitherway, thank you everyone for your help, my weekend begins in about 15 minutes!

I will check back in on Monday to see if anyone has come up with a solution to my original question.

Many thanks

[david.zavislan · Accepted solution]

Since you already have alignments and profiles created to control the generic link subassemblies, build the corridor from them.  Create corridor surfaces for each pavement levels.   Then, in  your cross sections (sample line group properties), you can apply surface material volumes to highlight the different overlay and mill areas.

[fcernst]

"...Requirement 4 is one specific to runways. If you have a striaght --> Curve --> Straight2 --> Curve2 --> Straight3 than the formula for working out the minimum distance between the intersection points of the curves is:.."

Hold on....are you still talking about your Alignment? I thought you stated you were all "longitudinally compliant" and currently looking for a way to present the Overlay, Level and Mill shapes in Section.

[Joe-Bouza]

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@fcernst wrote:

...however this assembly does not appear to be able to target edge profiles..

You can with this subassemby's capability.... I'll leave it as an exercise for you to cleverly imagine how.

You can obviously do 1 through 3 in your requirements, but I don't follow your #4 requirement.

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I cry Uncle, Fred. I have been cleverly trying for a long while now. Please, how bout a hint? A temporary surface must be involved. small corridor along ep following the desired pgl? something like that?

[sboon]

Partially speculation but I'm thinking that it could be done with two LinkWidthAndSlope subs from centerline, targeted in the corridor to the edge alignments and profiles.  Use parameter references in the assembly to transfer the output slopes from these generic links to the overlay sub.

Steve
Please use the Accept as Solution or Kudo buttons when appropriate

[Joe-Bouza]

Interesting, Steve. Am I infering correctly the LWS subs are connected at the crown and links obviously off for surface bla bla..?

[sboon]

Yes they have no codes and the link is turned off.  They're only there to provide the slope information to the milling sub.

Steve
Please use the Accept as Solution or Kudo buttons when appropriate

[Joe-Bouza]

Makes perfect sense. Why didn't I put 2 and 2 together?
2 kudos Steve, one from me one from my alter ego

[Anonymous]

David.Zavislan,

That is exactly what I was looking for, many thanks! Kudos coming your way!

I got this working but the volume hatch does not seem to differentiate between milling and regulating, do you know of any way to make the hatch have a different colour for each option?

[david.zavislan]

The hatching is controlled by the shape style that you are applyling to the material.

[Anonymous]

Thanks David,

Any chance you could send that screenshot again with the "Ground Removed" and "Ground Fill" Expanded so that I can see what settings you used for each surface?

 **EDIT: I got it working fine, I realised in the section view properties under sections there is another option for setting the shape style that overides teh sample group property style.