subassembly composer superelevation

[raghulan]

I want to know how exactly the super elevation within SAC works.

I am building few SAs and some are just multi layered lanes and others are lanes with solder, etc.

How do I add super elevation to SA,

After adding Super elevation to Parameter what is the next thing to do. Any tutorial or step by step guide.

Thanks in Advance.

[denler]

Hi Raghulan,

To be able to use the superelevation to build your SA, you have to :

1. Create a new parameter for the road crossfall default value (if superelevation is not applied to the alignment). Let’s call it Road_CrossFall

2. Create a new variable (double) that you will use to contain the actual superelevation crossfall value. Name it Road_CrossFal_To_Use.

3. In the value field of the variable paste the code snippet below. I found this code somewhere on the web.

   IF(SA.IsLayout,CDbl(Road_CrossFall),

   IF((Road_SuperElevation=LeftInsideLane) AND (SE.HasLeftLI) , SE.LeftLI,

   IF((Road_SuperElevation=LeftOutsideLane) AND (SE.HasLeftLO) , SE.LeftLO,

   IF((Road_SuperElevation=RightInsideLane) AND (SE.HasRightLI) ,SE.RightLI,

   IF((Road_SuperElevation=RightOutsideLane) AND (SE.HasRightLO) , SE.RightLO,

   IF((Road_SuperElevation=LeftInsideShoulder) AND (SE.HasLeftSI) , SE.LeftSI,

   IF((Road_SuperElevation=LeftOutsideShoulder) AND (SE.HasLeftSO) , SE.LeftSO,

   IF((Road_SuperElevation=RightInsideShoulder) AND (SE.HasRightSI) , SE.RightSI,

   IF((Road_SuperElevation=RightOutsideShoulder) AND (SE.HasRightSO) , SE.RightSO,

   CDbl(Road_CrossFall))))))))))

   In this code we assume that the superelevation parameter is called Road_SuperElevation.

4. When you need to create a point with the crossfall/supperelevation value, in the slope field, type Road_CrossFal_To_Use.

   Hope this is clear enough.

   Regards,

   Denis

[raghulan]

Thanks Denis,

In my case the user will define the super elevation in the alignment the corridor is associated to. In this case what is the workflow within SAC. 

I create the parameter for the user to select SE and then what needs to be done. If you have can you provide with a sample SA with Superelevation a simple example not a complex one. As i need to understand the logic.

also why we need to use this code, in what situations.
From a design perspective, user apply SE to the alignment and then the corridor gets that picked.

[denler · Accepted solution]

Hi Raghulan,

You can find attached a zip file containing a sample SA. It just contains 2 points and a link.

The most complicated part locates in the Road_CrossFall_To_Use variable default field.

Enjoy 

Denis

[raghulan]

Fantastic..I would give it a go and keep you posted. Thanks.

[raghulan]

Also, 

Is the code you sent has anything to do with driving on which side of road. 

Like America or British style of driving i mean on which side of road they drive.

Also if the road already has a parameter slope that the user can specify. how to do that.

Can we add the two slopes together.

I am attaching a sub-assembly please have a look and let me know your thoguths.

[raghulan]

Here is the sample SA

[denler]

Hi Raghulan,

Can you reattach the zip file. The download link is corrupted.

Regards,

Denis

[raghulan]

It worked thanks mate.. really great work.

[ccookusi]

Denler,

How do you add an input/output parameter to this subassembly for a grade that the user can plug in when superelevation is not being applied?

See Attached.

Thanks in advance..

[denler]

Hi Cookusi,

In the Road_CrossFall_To_Use variable, you just have to replace the 0 at the end of the formula by CDbl(Road_DefautSuperElevation) where Road_DefautSuperElevation is the user input param for default superelevation value.

To output the value, just send the Road_CrossFall_To_Use value to the output parameter.

See attached SA.

Regards,

Denis

[ccookusi]

Denler,

Thanks for the response.

However, the subassembly doesn't move when I change the grade.

See Attached..

Any thoughts?

[raghulan]

Mate,

If you could help me with this that would be great.

http://forums.autodesk.com/t5/AutoCAD-Civil-3D-General/SAC-using-Target-parameters/td-p/4697879

Thanks.

[ccookusi]

Denler,

Actually waht you posted does work.

The user has to change the Superelevation to "None" in order for the other grade to work.

Thanks for your help..

[khaledCULN8]

hi,

it seems i have the same problem. i created paramaters for superelevation in the SAC.

I tested the superelevation inside th SAC and it worked perfectley. 

the same does not work inside civil 3D. 

i tried what you posted but i couldn't figure it out.

can ypu please help me?

you can download the PKT file here

thank you in advance

khaled

[denis.leroux.setec]

Hi Khalend, 

It seams that your sub isn't correctly created. The input data for point P2 is a direct input from parameters. You should define a variable to compute the superelevation used value (see above posts).

regards,

[kono.dimiter7]

Hello!

How can i change slope in the "Road_CrossFall_To_Use"?