Corridor at wrong elevation

[OceanaPolynom]

Hello

I don't have much experience with C3D.  I am trying to create  as made drawing of cross passages between 2 tunnels.  I created an alignment from a line that was at the proper elevation.  I made two surfaces, one of the top and the other of the bottom, of the existing shotcrete.  I created a profile. I created  an assembly from 2 arcs representing the circular design cross section.  I created a corridor using the assembly.  I defined 4 sample lines at the required distances from the beginning of the alignment.  Finally I drew the cross sections.  The sections showed the 2 surfaces and the assembly.  The assembly was too low.  It is attached  to the center line at the top of the circle instead of the center.  It looks like this:

I need to move the corridor up to the end of the red line, or maybe redefine the assembly?

Thank you

John

[Anonymous]

Show your crossections without surfaces.

[OceanaPolynom]

Do you mean this ?

Thanks

John

[Anonymous]

Yes. There could be many reasons why it is drawn like that. You wrote that you made "an alignment from a line that was at the proper elevation". What do you mean? You should made an aligment from the line with no elevation. Than you should create a profile from surface and draw a profile in profile view. Later you need to select corridor targets (your aligment and a profile you made). Can you show your assembly? 

[OceanaPolynom]

Hello

What I meant by "proper elevation" is that I need the center of the assembly to coincide with the end point of the line at that elevation.  What happened is that the top quadrant of the assembly is attached at that elevation, resulting in the assembly being too low.  (As can be seen in the section.)  The alignment is created at zero elevation in any case. 

I created a profile, but didn't draw it because it is irrelevant in a tunnel project.   When I created the corridor I assigned the assembly.  As mentioned previously I created the assembly from an assembly object and two arcs, which were turned into sub-assemblies. I have attached the drawing file so the assembly can be examined.

Many Thanks

John

[Jowennl]

Hi John,

I checked your drawing and saw what is missing. You actually need a centerline profile then use your current assembly or attached a custom sub assembly that can help you get the centerline in a dynamic way.

If you only have 2 surfaces which is top and bottom and don't have the centerline then you may want to see this screencast that I created to guide you on what you need. <Link to Screencast>.

My aim is to show guidance and I'm sorry that I can't share my custom made assembly but hope to show you that there is a possible solution to your question. 

Cheers,

Jowenn

[Jowennl]

Hi John,

After reading through your message again. I realized that you actually have the tunnel centerline and it is currently a line.  Now I got 2 more possible solutions to your inquiry. 

Option 1) If you have Civil 3D 2018 - You can convert line to featureline then change corridor to use featureline instead of alignment then rebuild corridor. See animated gif below.

Option 2) If you don't have Civil 3D 2018 that can use featureline to replace alignment in your corridor. Then all you need is convert the FL to an alignment. Luckily, I remember I already showed in old thread how to do this method. You need to see How to convert FL to Align in this <Thread LINK>. Please go and see my Post 5 of 6 and download animated gif. (ConvFLtoAlign.gif)

I think with 3 potential solutions you can make it work now.

Cheers,

Jowenn

[OceanaPolynom]

Hello

I have spent some time trying to do what you suggested but without success.  I started from the drawing file I sent last time.  I did the following:

I created a feature line from the existing line object, this also created a site (site 1).  I named the feature line and used corridor grading as the style.

I then made an new alignment from the feature line.  First I made a Quick Profile from the feature line.  When creating the profile I accepted the defaults.

Next I exported the profile to LandXML.  When I exported the file I chose only the lower profile. I deleted the Quick Profile.  Then I imported the LandXML file back into the drawing, while doing this I set the the new alignment and the profile site to the new site.  I imported both the new alignment and the profile. I then created a profile view using the new alignment.

In the corridor properties dialog box I changed the alignment to the new alignment and I changed the profile.

When I tried to make section views the new alignment was not available in the Create Multiple Section Views dialog box.

I have attached the drawing file as it is now.  I am using C3D 2016.

Thanks

John

[Jowennl · Accepted solution]

Hi John,

I tried it again in C3D 2016 and it is working. I think you made a mistake in converting fl to alignment. I did it for you this time. please practice the convert fl to alignment it will be handy for you in the future.

image below is what you should have in converting FL to alignment. Untick the surfaces in doing quick profile then you can have the xml of your alignment.

See attached files.

Cheers,

Jowenn

[OceanaPolynom]

Hello

Finally got it to work!  I started over from the beginning but instead of first creating an alignment, I made a feature line first and then created the alignment from the feature line.  In the end the one alignment is all that is necessary.  My final file is simpler.  I attached it to this.

Many thanks for your help and your patience.

John

[OceanaPolynom]

Sorry forgot the file