Every six months and water Jetted once every 2 years
If you have a floor drain, there is a trap on the bottom of that. The main line shouldn't have a trap in it. There does not need to be one on the main because each fixture should have one and that's just another place for a clog to form.
A large power auger is the only solution for the main drain.
its not easy but if you can locate your main drain pipe and its below your basement floor then saw cut up the floor and attach the floor drain to the trap and then tie on to the main line using the same pipe or adapters. If you have no main drain under your basement floor then you will need to saw cut a hole for a sump pump pit or basin and install the sump pump to your main drain line which has to be installed so your sump pump line runs higher then your main line before wyeing to the main line. then cut up the floor to where u want your floor drain and run the drain to your sump pump basin . Some states want a vent on your floor drain and on your sump basin so I would check what your local codes are.
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.
a home typically has a 4" main drain and that is enough. if it is not 4" you should get a plumbing code and do the math. Can you add a second 3-inch wasteline to an existing 3-inch main house wasteline in order to add the 3rd bath and toilet (this is obviously a 1950's house)?
Open
Grocery stores and hardware stores often have a rubber or cork cover for a drain.
The drain from the washer to the main line is getting plugged and the floor drain is easier. Drain cleaner in the floor drain should take care of it.
it is in a normal drain
The main drain should be split to two drain basins at least three ft. apart. This is done to prevent suction entrapment.
If you have a floor drain, there is a trap on the bottom of that. The main line shouldn't have a trap in it. There does not need to be one on the main because each fixture should have one and that's just another place for a clog to form.
The key word is "drain", meaning it works by gravity, so a drain value should be at the lowest point in the system. Typically there is one just past the meter. If a lawn irrigation system is a branch of the main system it should have its' own drain valve for winterizing it. You can purchase stop valves (or shutoff valves) with built-in drain or bleeder valves.
No. You cannot use the main drain to lower the water level below the skimmer. This is because the main drain is not really a drain. It only connects right back to the 3 port valve in the skimmer.
That would depend on the height of the drain and how deep the sink is. As long as the drain is lower than the bottom of the sink, it should be fine.
If you mean you are losing water, it may be a broken or cracked main drain or possibly your hyrdo-static valve is malfunctioning. One other possibility is a break in the pipe going to the main drain.
No, it is often an important part, but it should not be the only approach.
no you can not