AutoCAD Civil 3D

[#1]

I am having trouble creating a retaining wall subassembly that is equipped with varying height in order to follow an existing ground surface. I would like to find out how to attatch a point towards the top of the wall to the existing ground surface, so the wall height automatically adjusts to reach the top of the road cut.

The design is for a basic road along a steep slope. Before proceeding with the left side of the assembly, I wanted to create this varying height retaining wall.  

I have attached an image of the assembly for reference. The ultmite goal would be to have the wall height vary along the corridor to meet the existing ground just below the top of wall.  

Any help would be greatly appreciated. Using Civil 3D 2013

Cheers

[#2]

This is what the RetainWallVertical subassembly does.

[#3]

Using the RetainWallVertical, what parameter would be the appropriate one to attach to the surface? I'm assuming it would be the Top Height. 

I'm not sure how to attach parameters to the target surface. I've tried going through the Assembly Properties, under the Construction tab, and using Parameter Reference, but I don't see the correct option available in the "Get Value From" dropdown list. 

[#4]

It will be a target within your corridor, similar to a target for daylighting.

[#5]

Where in the settings do I go to specify the target?

[#6 · Accepted solution]

See attached image. Select corridor, right click, select corridor properties, Under the parameter tab, select set all target, you should see RetainWallVeritcal under the surfaces section. set your surface you want the wall to daylight to.

[#7]

Thanks heaps

[#8]

Please pick Accept as Solution, if that answered your question.

[#9]

Thanks again for the previous help. I was able to link the top of the retaining wall to the existing surface, but now I would like to link the wall footing to a certain depth relative to the same existing surface. 

Essentially, I want to maintain a 5' width of horizontal cover between the left edge of the footing and the existing surface. I believe this could be accomplished by somehow creating a variable footing cover height relative to a 5' horizontal distance from the surface in combination with a daylight subassembly.

The purpose of this 5' horizontal cover is to eliminate the need for a fill slope stemming off the back of the wall. The proposed road location is along a very steep slope where a fill slope is undesirable. With the footing being buried deep enough, no fill slope will be needed. 

I have attached an image of my assembly with some text to detail my idea.

Any help would be great.  

Thanks in advance

[#10]

"The proposed road location is along a very steep slope where a fill slope is undesirable."

This wall scenario may be a better choice for this stretch of steep slope where you don't have much lateral purchase. Also, your 5' offset scenario doesn't necessaritly ensure a minimum footing depth is always achieved.

Coordinate with your structural engineer on this.