Ok, so I'm building a barbarian, not for DPS, *gasp* but kind of like a dwarven defender, where my rage is really just to pump me to a crazy juggernaut. I have 2 questions, however:

1. What is the calculation on rage duration? I had assumed it would be 18 seconds (3 rds) + 6 seconds per con bonus.. and that SEEMS to add up.. at 5th lvl with exend rage I and 26 constitution(pre-rage, 30 while raging), my rage lasts for approximately 1m 40s. I'd just like a confirmation. This leads me to my next question...

2. Do items and enhancements increase rage duration? or is it only your base stat?

I just want to know before I go all silly on my toon. I'm going to get him to a 42 constitution while raging, which is certainly against conventional wisdom, but it will make my rage a constant state of being with hitpoints well over 700. I'll be using a mithral tower shield, dwarven axe, and the armor mastery ehancements for being dwarf to reach reasonable AC. Two lvls of fighter for 2 bonus feats and the fighter strength I. This allows me to sit at a modest 34 strength while raging.. but then, I'm going to be playing him like a fighter, so 34 strength is great. I'm going to max my intimidate to take advantage of the intimidate enhancement as well.

Am I completely nuts? I welcome the answers to my questions, as well as information to make my build better, but I'd prefer non-flaming posts, please. Just because I don't fit the normal mold for barbarian doesn't mean it's not workable. It just means we make it work in a different way.