It is most probably a problem with the venting pipe (i.e. the pipe that goes right to the roof and out), which is supposed to prevent a vacuum build-up within the circuit vent of your block. Not a serious problem but you will need to alert the town council or hdb to take care of this 'block' problem.
Trust me .. I'm in this business.
i stay in 3rd floor pigeon hole.
recently when ever above floor ( not sure which floor ) flushed their toilet,
my sitting toilet bowl will produce a large bubble noise.
some water is observed spitting out of my toilet bowl.
the noise seem to be huge amount of bubble pushing itself up.
i am not so concern about the noise, more like the spitting water that split out onto the floor.
the water that spit out stink the whole toilet.
note: ( my own toilet bowl seem perfectly no choke AS i can flush without issue )
anyone know why?
sorry no photo at the moment.
key point is the small pipe above the S trap. that is not a vent pipe. my bad. it is the waste pipe from the wash basin next to the w.c. make sure you dont choke it.
and make sure you dont flush any used cloth into the w.c. either.
i check.my toilet bowl piping itself do not have s trap.only the shower side got s trap.
the toilet bowl design itself is already s trap..no required another s trap pipe.
yup.i have this in the shower room.
so what can i do with it?
open the cap to remove the pressure?
monitor a few days
few days already leh, still Narong never came in to give advise
every toilet and s-trap shld be connected to these waste-pipe. is the problem toilet connected to these waste-pipe? if it does u can try remove the cap and see what happens. take pic of yr problem toilet?
remove the cap?will shit or air pressure shoot out or not?
i think the blockage is after the s-trap of the toilet. better call TC to check the piping of floors below for blockage. very rare but there are cases where the toilet overflow with shit water.
They could be checking the wrong pipe. I may be wrong. But I think for high rise block, there are 2 sewer pipes for each stack of flats. Flat on the 2nd and 3rd story will be served by a separate smaller waste pipe that does not go all the way to the roof top. This waste pipe is joined (at a level few floors above yours) to a bigger waste pipe that serve the 4th floor and above. Both pipes are interconnected at every storey by smaller pipes.today second group of town council came to check.
first tech say the toilet bowl is a old design, better replace a new toilet bowl
second tech say he will check with level 2 and level 4,but after disappear never come back.
3rd tech say he open up the sewage trap at ground floor.he say result satisfactory he block.
all left..no update ,problems not solved.