Topic: surface modeling question

[cadtag]

What would be the best way to address this situation to get a tinn model?  new (replacement) road going to an existing bridge.  top of road about 16'.  crossing under the bridge is a walkway at river level,, el 5.5 at bulkhead wall.

my thinking is just to run a faux slope from end of pavement/beginning of approach slab down to the walkway, and ignore the bridge elements (especially as we are doing nothing with them)

reasonable?  or not?

[mjfarrell]

Are you being asked to split the sidewalk and have a portion follow the road across the bridge
and another portion go down to sidewalk along the river?

[mjfarrell]

Here is an idea....
The generic link is used to create outside retaining wall, change it's point code to unique value
if you need that surface give it a unique name as well (not TOP OR DATUM)

Note assembly change @ face bridge abutment to allow sidewalk to continue under bridge...careful use of poin codes from generic links and or Marked Points will
allow one to get good surface models

[cadtag]

here's the landscape architect's design.  the sidewalks adjacent to the relocated road connect to existing walks on the bridge.  immediately west of the bridge there's stairway access to the river edge walk, and further west there's a sidewalk that  branches off to the north and wanders around the dog park before heading south under the bridge.  eventually connecting to the people park south of the road.

[mjfarrell]

Looks like you could still use method from drawing posted....only remove the offsets that control the sidewalks left and right of the road/bridge approach.

[cadtag]

what i really need is a good tutorial/ reference material on corridor modeling.  so far my c3d surfaces have been handled with feature lines -- never had to do much that utilizes anything remotely like a typical road.  lots of park jobs, boardwalks, beach access, etc &  not a lot of pavement

[Dinosaur]

The tutorials found here are a bit dated but Michael may have added some more recent stuff since I last checked -

http://www.theswamp.org/index.php?topic=13092.msg158891#msg158891

the link has been broken for some time apparently but I just repaired it again.

[mjfarrell]

I think the session I did on Advanced Corridor Modeling @ AU is archived.


However a big key to good corridor modeling is NAMING convention and good names for your components, and or things they should use for targets....
The one I posted might prove a good bad example of how NOT to not name things clearly....

If I get a chance I will clean it up...and repost.


OR

send me some polylines of that job in the correct location in space and I can mock something up....then you can insert it into your file...and revise assemblies IF require.
Limit that by providing roadway and or other sections so I can make the assemblies correctly from the start.

[cadtag]

thanks gents.  i'm essentially self educated with c3d, which means I'm the product of unskilled labor. 

[mjfarrell]

thanks gents.  i'm essentially self educated with c3d, which means I'm the product of unskilled labor. 

As am I.  However after years and years of teaching and consulting others, I have a depth of experience matched by few.  (not bragging, just stating a fact)
So don't let the 'self taught'  hold you back!

[nobody]

thanks gents.  i'm essentially self educated with c3d, which means I'm the product of unskilled labor. 

LOL. Think I'm there with ya