Is the clogged toilet because the distance or maybe the pitch?

a couple times a year our basement toilet doesn't want to flush. when we use the upstairs toilet or shower it makes noise in the basement toilet. if we use the washer thats in the basement the water won't drain down the sewer it comes back out the washer pipe and all over the floor. we have check the stack vent and nothing we have snaked it with an elec snake and the clog is not in the house. so then we call a plumber and they snake it from the house to the road and that works for a few months then we are right back to square one. we did have a camera run in the home and the plumber said that the pitch was wrong cause there was water sitting in the pipes and there shouldn't be. we also had another plumber tell us because the distance from the house to the road was so far that we would have to put a pump station in ($14,000.00) could it be that the pitch from the house to the road is wrong our house is about 120 ft from the rd. is there a better (cheaper) solution.

Is the clogged toilet because the distance or maybe the pitch?
Pitch should not be greater than 1/4" per foot and no less than 1/8" per foot. It does not matter how far it has to travel as long as pitch is correct. So that means from your basement to the road 120 ft away it would have to drop a total of 15'-31' depending on where it exits your basement. If your pipe is holding water then it is not pitched enough. A pump would definately help and probably solve the problem or you could try having a new sewer line dug which should be way cheaper.
Reply:Hey Bud,


If your draining but water is standing. you have a piping problem. Most times " your sewer elevation at the Tap is much lower than where your building sewer is connected".


Most times the city set up a 6" tap off the sewer line and the plumber connected to it.. I would check with the city and ask for "as built" drawing information to determine the depth..


You need to re-pipe the drain to the tap but make sure you have the information you need first. 4" pipe can be installed at a percentage of grade( almost flat.


The most important thing when installing the new piping....MAKE SURE ITS BEDDED SOLID. If it means bringing in some sand do it. Check the drain elevation at the home and find the elevation at the tap.


Good Luck


Oldguy
Reply:It definetly sounds the pitch is wrong, the affluent is staying in the pipe and not reaching the main sewer, so all I can suggest is that you extra flush it, in between uses, to get extra water, to move anything that is taking its time along the pipe.


Who knows it might help.



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