That's a shame, at first glance the Court Martial
shot seemed pretty well centred! The Journey To Babel
shot is less distorted (simply because it was filmed from further back) and only tilted at 1 degree.
To be "real" I figure the tubes section would have to be around 100' in length. However, trying to match it to the forced perspective set is always going to be dificult due to the reasons I mentioned in my last post. I wish you the best of luck!
As for size; the back wall should be 24' from the front one (the 2nd season set was 20'). However the set nowhere near matches the "maze" that is Engineering is often referred to as, hence many have speculated that there are several engine rooms within the Engineering Section, or at least a lot
more than we ever saw on camera.