Peter Frenzel 010119 posted:what is the minimum amount of feet required to handle a ful turn of 054 track 8 pieces?
Lionel and Gargraves are close to 54 1/2" circle and Atlas and Ross are 55 1/4" measuring outside rail to outside rail. MTH RealTrax and ScaleTrax are 55".
Then, add clearance for engine and car overhang for your equipment - 2 1/2" - 3" is usually safe. Less is for your specific fitment needs and equipment.
I would use a 56" - 58" area.