Marble Dropping Sound In Apartment

I often would hear what sounded like a marble or small ball dropping then almost a bit of a quick tap tap like bounce.
Marble dropping sound in apartment. I thought perhaps a cat playing with a marble ball. Or sometimes it s the sound of marbles rolling. I think the marble dropping sound comes from the pipe being excited into motion from the water hammer effect and then banging on another pipe the floor a beam etc wilson says. My apartment is an old apartment in upper west side.
Hdb said in a letter to st then. I would also hear what sounded li. What s worse is if you re living in a standalone house instead of an apartment. The sound of running water opening and closing the mosquito trap mechanism in toilets could sound like marbles dropping.
To date we have not received any feedback on the sound of dropping marbles where there has not been any attributable cause. However this usually produces a single sound. Happened to my condo. 4 aircon refrigeration pipes old fridges piping after a period of time will start to accumulate particulates and bubbles in its piping system.
The sound it creates is similar to that of marbles dropping. Complained to the owner upstairs and the owner said that her tenant denied doing such thing every night and the tenant sleeps before midnight. Tenant kept complaining got marble dropping and rolling sound as well as table or chair being dragged every night especially after midnight. It s the sound of the pipe hitting the nearby object rather than the sound of water running within the pipe.
When living in an historic building in il. I think the marble dropping sound comes from the pipe being excited into motion from the water hammer. Well if you ever heard. It has 6 stories i live on the 5th.
So who is it that s playing with marbles. On a lot of nights at around 11pm 12 midnight when i am sleeping i hear what sounds like a marble that dropped on the top floor above me. Water dripping during air con condensation. We ve all been there.
Usually marbles sounds of this sort will be only singular sound of 1 marble means only sound like 1 marble dropping is heard. Why so many apartment dwellers hear the sound of rolling objects through the ceiling. We re just minding our own business when suddenly you hear a marble dropping from the floor above. In mr wong s case we have contacted him and offered hdb s help.
Hdb sengkang branch office which manages the flats at punggol town has not received any feedback about the sound of dropping marbles in the area.