Tualet naverchu
The word for "toilet" in Russian is "ััะฐะปะตั" (pronounced as "tua-let").
because the upstairs toilet drain was clogged up.
yes they are
The drain is plugged somewhat between the upstairs and downstairs. Need to snake the drains.
Unless it is a very strange arrangement, turning off the toilet on the first floor should only shut off the water to that toilet. It should have no effect on the upstairs shower.
Where is the toilet? Где туалет? "gdye to-alyet?"
You go upstairs to the toilet and check your pants for poop from the wet fart
partially clogged drain or vent, improperly installed vent or drain
A portable commode is often used when a patient is sleeping downstairs, and can not get to the upstairs toilet (which may be the only toilet in the home). Usually, the commode is designed to look like a piece of furniture. If the patient recovers and can use the upstairs toilet once more, the commode can be put away. Being portable, the commode's bowl can be carried upstairs and the contents disposed of down the toilet and into the sewerage system. Portable commodes, chemical toilets, and such like, are often used when camping, or caravanning, or if the house is not connected to the sewerage system.
You can say either, depending on what you mean. Usually you are asking someone to perform a sequence of actions: first, to come upstairs, and second, to see something. The way to say this is "Come upstairs and see it." But if you are saying that the purpose of coming upstairs is in order to see something, in response perhaps to the question "Why should I come upstairs?" or "Where can I see it?" then "Come upstairs to see it" is correct.
The drain from the toilet to the main drain is plugged and the branch to the shower is not. If the main floor toilet flushes, it is between the two toilets and not between the house and the sewer.
If your plumbing system is properly installed there should not be any problem. If it isn't installed properly, you would already have water from sinks and bathtubs backing up out of the downstairs toilet.