Plumbing is the art and technique of installing pipes, fixtures, and fittings.
Answer 2.
Plumbing, from the Latin plumbum for lead, is the skilled trade of working with pipes, tubing and plumbing...
YES, as a 'PLUMBING INSPECTOR' you do need to be at least a journeyman plumber.in certain cases (rural) you need to be a public health official with sub-standard training in inspections.
follow the drainage back till u meet with a 3" pipe, extend the 3" pipe back to where u would like the toilet instaled. with in 3-5 of the toilet arm tie in a 2 line and install a lav. Toilets...
You have to take the floor apart and reduce the piping to 2". You also have to install a p-trap as there are NEVER p-traps under toilets. All p-traps are BUILT into toilets!!!