JedC, I'm not trying to fight, and sorry if it seems that way. Just trying to find out why we do certain things. For example, where I work, I see structures cast with 3 inch thick concrete, in good shape, and have been there since before anyone working here was even born. Now the same structure, most engineers in my office would use double curtain 12 inch thick walls. Also, today I just went out to the field and saw a concrete box, larger than the one I am trying to design made of 6 inch thick concrete. That structure looked very old and still in use and seems to work well.
And thanks cvg for that link. It was really helpful. I think I'll be using the rubber waterstop on the water side of the rebar to protect both from leakage and the rebar from rust. I do have a question on the hydrophilic waterstop though. If I made a 10 inch thick wall with double curtain, and placed the hydrophilic waterstop in between the rebars as the pictures in that power point imply, wouldnt that push the gap to become even larger and cause the rebar to rust?