1/4 inch per foot.
Probably the wrong size flange. Is the flange a toilet collar? If so the pipe is probably 4 inch.
you need to know the viscosity of the liquid - molasses or alcohol?
Wouldn't recommend it as things may back up in the drain line. 4" line is the norm ... you want to get rid of waste, not keep it around longer.
Answering this question leaves a lot of unknowns; 1) Is this in the basement, in the floor, under concrete, or, going to be. 2) Is this on a main level, above a basement (Not a crawl space!). And 10 more questions! There is some planning, but, could be trying to answer 25 different scenario's, as much supplied info. will help. For a short answer to keep it simple, the answer is, yes, you can!
100
30 GPM
The recommended diameter for a 4 inch drain pipe in a residential plumbing system is typically 4 inches.
300 GPM
1/4 inch per foot.
3 or 4 inch
Un huh performed all the time
Depends on the pitch of the waste line?
Yes, easily.
1/8" per foot
80 gpm
The cable is 3/4 to 1 inch diameter with a head that expands with the rotation. For a 3 inch drain you use a powered auger that turns the cable.