You must maintain a 2" air gap from indirect waste to sewer waste. If sewage back up was the issue, I would recomend "directly" piping the 2 inch drain to the main sewage with a 2 inch normally closed backwater valve. If you piped an indirect drain you would not be protected from sewer back up. I assume this is for a sink perhaps in a basement?
Depends on the "Sink" waste if it is a 2" sink waste a 3/8 cable will be fine.
Best way is to snake (rod) the line through the sink waste as the waste flowing from the sink into the tub means the stoppage is AFTER the tub and basin waste as water seeks its own level
The direct object of the verb 'found' is 'a pail and some soap'.The indirect object of the verb 'found' is the prepositional phrase 'under the sink'.
plumbing diagram of double bowl sink with disposal
Liquid wastes should not be dumped down a sink because they can cause back-up. This liquid waste could also break pipes.
Yes, you can.
Yes. It fits, no problems.
12" center of waste to the floor
1.5
under the sink waste plug hole
the difference are as follows. the direct water supply comes from the outside main water supply directly into the sink. the indirect water supply has mains cold water collected in a cistern which in turn supplies water to the sink.