For example, the 3 consoles that line the wall in the S1 engine room theoretically should be each 8' wide to measure out for a 24' deep room according to the blueprints. But when constructed at that scale, the 5'11" Kirk and 5'10" Scotty are too small when placed on the set. So after adjusting the scale a bit, the consoles are now 7'3" wide and people look correct when placed in it.
Hey! Glad your still interested in this project. Question for you, though, just to make things more complex. Do the reference heights for Shatner and Doohan you used include the height of their boot heels or is it the actors' personal heights? As I recall, the boots were pretty tall, like 2 or 2.5 inches or so. That might affect your console computations a bit.