Creating a conditional sub assembly

[Baker_ADG]

So, I have a road and i have created an Assembly. it works the way i want... except.. I need a 2' wide ditch that the daylight edge is no more than 6' from the daylight. 

I have tried a conditional CutFill Sub assembly and a marker and link. I cannot get the section between my shoulder and ditch to "stretch" to keep my ditch and daylight 6' max. Please help. thank you. C3D 2013 SP2

Pics attached to help my explination 

[doni49]

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@Anonymous wrote:

So, I have a road and i have created an Assembly. it works the way i want... except.. I need a 2' wide ditch that the daylight edge is no more than 6' from the daylight. 

I have tried a conditional CutFill Sub assembly and a marker and link. I cannot get the section between my shoulder and ditch to "stretch" to keep my ditch and daylight 6' max. Please help. thank you. C3D 2013 SP2

Pics attached to help my explination 

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You haven't provided enough info.  What is your fore and back slope?  Do these vary?  What will control the bottom of ditch elevation?

[doni49]

Also -- you said "no more than 6ft".  That implies that this distance will vary as well.

So under what conditions will it vary and what will change?

[Baker_ADG]

fore and back slopes need to maitain 2:1 slope. 

the bottom edge of ditch will follow the daylight line at a constant 6' from daylight.  (sorry for confusion)

this will adjust the bottom of the ditch.

the cut or fill slope between the shoulder and ditch shall not be more than 2:1 but needs to vary in width.

Basically, I am trying to recreate a corridor from LWpolylines that were given to us. I've attached the LWPLs to this post.  

Thank you for your reply!! I am sorry i wasnt clear-er to begin with. 

[doni49]

Ok.  So you still need one more dimension then. 

Given what you've provided, if you had a way to locate the daylight point, you could create a custom subassembly using SubAssembly Composer.  The custom SA would use the identified daylight point and work it's way back to the shoulder.

[doni49]

One more thing:  for you to be able to do this with a corridor, you need to provide enough info that you would be able to do it by hand if you had to.  But based on the parameters you've given so far, that would entail picking a RANDOM point on a cross section and drawing it in.  C3D just will not be able to do that.