2014 Structure table creation using Pipes

[jak79]

I am using C3D 2014. I have created a storm sewer pipe network and now I am working on creating a Structure Table found under the Pipes/add table menu. I have two types of structures (round and rectangular) both in the "Structure Size" column (see attached image). My question is if it's possible to format this column to display only the type of structure being used. What I end up with is "????" for the type of structure not being used. Any help or better practice is much appreciated.

Thanks

[sirjoelsph]

I asked a very similar question a while ago and we didn't come up with a specific answer but a few ideas on workarounds to try.  Take a look at this previous thread - http://forums.autodesk.com/t5/AutoCAD-Civil-3D-General/Structure-Label-Expression-Circular-vs-Rectan...