Superelevation in alignment or corridor?

[Anonymous]

I am designing a 1 mile go cart race track that has a lane width of 28' with a standard crossfall of 1.5% (not crowned) since this track has left and right turns in it i cant simply make a subassembly with basic lanes at 1.5% superelevation.  So im wondering how to set up my drawing to keep the 1.5, but transition at the curves so the crossfall goes in the correct direction.  There are 12 curves total, 1 will have a 7% super elevation, 3 have @ 5% and the rest keep the 1.5%.

I have my alignment and profile created already, just not sure the best way to attack this.  I've never worked with superelevations, my projects are usually street improvement widening or new crowned roads.  Do i just follow the "enter a superelevation manually in alignments" tutorial?  How does that translate to my corridor? How do i set up a subassembly with the alignment?

I'm working in civil 3d 17 if that helps.

Thanks for the help.

[KMercier_C3D · Accepted solution]

The way I would tackle it is to make an assembly with LaneSuperelevationAOR on either side with the 14' width and the -1.5% and 1.5% default crossslope and make sure you have them set to Left/Right Outside Lane for Superelevation. Then click on your alignment to Calculate/Edit Superelevation:

In the wizard you will want to select Undivided Planar:

And set your default lane widths and slopes:

You can then use the Superelevation Tabular Editor to adjust which curves you want what superelevation at and when you what stations you want to use for your transitions: 

[L3GO-Ed]

Medeiros, like you noted you will have to enter the superelevation data manually. I think you need to work out your super elevation values and then input these. There is also an option of importing a .CSV file of your critical stations. Actual, l personally use this.

As for the assembly, the stock assemblies will do just fine.

Lastly, The Barrels forum has a series on super elevation. Check out the videos on the

https://www.google.com/url?sa=t&source=web&rct=j&url=http://civilimmersion.typepad.com/civil_immersi... blog.
They will help demistify it for you.

[Anonymous]

does messing with the alignment change my corridor to reflect the super elevations?

[KMercier_C3D]

Just adding superelevation data to the alignment itself won't automatically change your corridor unless your assembly is set up to read the superelevation data in one of the Input Parameters. 

[Jeew-m]

Dear Friend,

As stated by KMercier_C3D you need to have lane superelevation AOR subassembly to create the corridor. However since the superelevation is entered manually you need to be careful on that. 

You have 12 columns in superelevation table. 

1. Superelevation Region
2. Station
3. Description
4. Smoothing Curve Length
5. Left Outside Shoulder
6. Left Outside Lane
7. Left Inside Lane
8. Left Inside Shoulder
9. Right Outside Shoulder
10. Right Outside Lane
11. Right Inside Lane
12. Right Inside Shoulder

You need to enter superelevation values that need to absorb to corridor in to either one of 5-8 for left and 9-12 for right.

For example if you enter the superelevations on 6 column in one station then you need to enter all the related left superelevations at all stations to column 6. Similar for right side as well. Other places you can give the value as 0.

Then on the lane superelevation AOR subassembly it will ask for superelevation option. So you need to give the correct option. For the example for left side it will be left outside.

Example csv file is attached herewith.

Thanks

[KMercier_C3D]

Alternative to bypass all of Civil 3D's superelevation control all together because I'm a rebel like that. How do you feel about using a Subassembly PKT file? You can import the attached subassembly into Civil 3D (Insert ribbon->Import Subassemblies) [NOTE that any computer that wants to run this corridor will need to import this pkt file]. Then when you build your assembly after you add your lanes use I to insert this subassembly and then B for before and click on the right lane; and then do the same for the left. You want to make sure these are defined before so that they can use the Parameter Reference. Then on your construction tab of your Assembly Properties you will want to check the checkbox on each of your Lane subassemblies slope Input Parameter to Use Parameter Reference and select the Get Value from in the drop down box like this:

Then you generate two pseudo profiles using the profile creation tool (you may want to make a profile view of your alignment for this that has an elevation range of -0.5 to +0.5). One of the pseudo profiles will be your left lane slope and one will be your right lane slope. So your profile will vary between -1 and 1 for the decimal grade of your slope (ex. a constant elevation of -0.015 everywhere you want it to have a -1.5% cross slope for your lane and then it may transition between two stations to then have an elevation of -0.05 where you are now at a -5% slope.  Once you have these two pseudo profiles made you will then make sure to target each applicable profile in your corridor properties under the Left/OutputParameterFromElevTarget and the Right/OutputParameterFromElevTarget. 

Once it is set up this will give you a lot of control to just change the stations of your pseudo profile (think of them kind of like a manually editable Superelevation View) of where you want your lane slope transitions to start and stop and what slopes to vary between. 

[KMercier_C3D]

Non-technical reply: I'm super jealous and have now added go cart track to the list of projects that I think would be cool to do someday. Right up there with designing parcels for a cemetery. (No sarcasm intended.)

[Anonymous]

I got everything to work, and designed my track, i want to use the drive command, but i cant get it to view properly.  Ive used drive before, im wondering if its just too big of a file that it wont work.  I turned off my hardware acceleration to help the graphics card but that didnt resolve the issue either.

when i exit drive i get a frozen viewport of the track and i can zoom in/out with another view of the track (like its two viewports) i always have to go to view/viewports/single viewport to get it back to normal.  Attached is what my screen looks like when i go into drive mode.  Its like it has two viewports too, but definitely doesn't look like im in a 3d view of the track.

[elmo3307]

I have an assembly for a camel racetrack that requires superelevation on both the racetrack itself and the left and right roads. The racetrack is elevated by 0.50m from the road surface. How can I incorporate three different superelevation values into this design? Specifically, I need the racetrack to have a fixed superelevation of 2.0%, while the left (inner) road should have a superelevation of 3.0%, and the right (outer) road should have a superelevation of 5.0%.