I have been doing more reading than posting trying to learn something, I am overwhelmed with yalls knowledge. basically I have my 30th design in mind if not higher. I plan on putting a 55 gallon drum on top of a box. using the calculator I need a 67" chimney if I use the 2" cap on the lid. I plan on adding an access door on side of drum to load and unload food. fire box will have a slide out tray . now for my dilemma, the scratch your head and make yall think I am nuts. instead of the 6" opening I want to make smoke tubes spaced around the drum bottom protruding 4" high in the drum to allow the smoke to go through that. I am thinking about 1" nipples. This will allow me to fill bottom with water to keep moisture up. along with a small drain pipe on the outside to drain afterwards. here is what the calculator told me Link to BBQ Pit Calculator now I am not the smartest person and may be trying to think too much into it. Can anyone even picture the beast I am thinking of? I am mainly waiting to do taxes to get my refund money to buy a welder. I know how to weld but work will not let me bring theirs home. I am not opposed to any criticism and open to other ideas to make something like this work. I even tried to sketch it out but I am not a good artist. Sorry this whole post sounds confusing but I am on a short break at work..