designing a channel...help with assemblies and corridors

[sonnyamorales]

Ok I have read material and all of it seems to be based on road way design. I unfortunately need to design a diversion channel.

 

Things I have already:

Existing Grade Surface

Existing Grade Profile

Proposed Alignment

 

Things I need help with:

If I am understanding civil 3d correctly, than I need to create assemblies in order to create a corridor for my channel. So I went in and created two assemblies. I think I need two as the channel is 20' wide from sta XX to sta XX and 24; wide after that to a specific station. than the end is gabions

 

I set the parameters of my first assembly (minus the depth, as im confused here)

width=20'

slope = 3:1

 

the channel would basically slope up until it meets existing grade and just tie in, so I don't think I need any of the other parameters, am I wrong here?

 

Issues I am having?

How do I get the assembly to start and stop at a given sta and elevation? Than tie in the two assemblies to create one corridor?

 

Any help would be appreciated, I know I might be asking much but I just need to be pointed in the right direction as everything im reading is confusing me even more.

 

thanks

sonny

[sonnyamorales]

im reading "mastering civil 3d" and it just confuses me more. any help?

[CyberAngel]

Disclaimer: I don't do this kind of design every day. Take the word of someone who does over mine.

 

You should be able to do what you want with a basic Daylight assembly, probably the Max Width version. An assembly, to put it as simply as possible, is a pattern that tells AutoCAD how to build a surface along an alignment. A Daylight assembly builds the surface by connecting the alignment to another surface. You've already defined the parameters, so all you should have left to do is split the corridor into two regions.

 

According to Autodesk's online User's Guide, you can add regions in plan view or with the corridor's properties window. In plan view, select the corridor, then click on the Corridor tab, the Modify Regions panel, and the Add Regions command. You can select the starting and ending points for a region, then give it a name and an assembly. In the properties window, go to the Parameters tab, add a new region, adjust the stationing, and assign assemblies to both regions.

 

I'm not exactly sure how the two regions will interact. I think the point is that they don't. If you want a transition between the two widths, you'll need an intermediate region. If there is no transition, you're probably done.

[sonnyamorales]

thanks for the help.

[sonnyamorales]

I seem to be missing were I add the "target surface" for the daylight assembly. Is it in the properties?

[sonnyamorales]

forget the last post...I found it...new problem lol

 

I need my side slopes to be 3:1 and just run until they hit the existing surface. I do need a daylight assembly for that, correct?