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Best Practices for Modifying a TTM

Question asked by Patrick L'heureux on Oct 3, 2019
Latest reply on Dec 18, 2019 by Alan Sharp

I had to adjust an old mode lthis morning that either myself or one of my colleagues prepared 4+ years ago. I did not have the original data but I did have the ttm that we provide to the field crews. I needed to adjust the model because there were some field changes made on grades and I needed to accommodate for these in our phase 2 ties. 


What is the best way of going about this?


My process:

  1. Imported ttm
  2. Imported spj from field crew
  3. Used a label point style to label points and visual highlight elevation differences from the installed surface (field mapped) to the model surface 
  4. Created breaklines for the new tie
  5. Created boundaries around these areas
  6. Used the explode surface TML
  7. cropped out the old data
  8. added the new tie in data


This worked but it seemed slow and the exploded surface is a resource hog. Has anyone found a better way of doing this is the original data 3D data isn't available?


Typically with our field models, I provide the 2d linework un-elevated and the modeled surface. If the linework was elevated this may have been easier.