The date, June 26, After a five-hour experiment on Wednesday, members of the Singapore Paranormal Investigators SPI , a society made up of paranormal enthusiasts, have come up with what it thinks is the real reason. They say the sound comes from water trickling through PVC pipes, which gets distorted through concrete before emerging as the sound of falling marbles. This phenomenon has been in the news lately. It all started when The Straits Times Forum published a letter by bank executive Joseph Wong, who kept hearing the sound of falling marbles in his flat.
A flurry of letters from other people followed, all saying they had also heard the sounds, and wanting to know the cause. Some even suggested there might be a supernatural explanation. The SPI was not satisfied. It wanted to narrow down the possible causes. On the upper floor of the two-storey house, they dropped marbles big and small, flushed toilets, turned on taps and recorded the sounds. They also recorded the sounds from the floor below. They then compared the sound frequencies with a recording they had made of falling marbles.
For the SPI, which was registered as a society last month, the investigations do not end here. Mr Fong and his team want to do more tests to bolster their claim. Charles Goh: So, could the sounds of falling marbles be due to water rushing down the sink?
But I beg to differ in my opinion. I am sure that the answers lies very simply before us. Just plain common sense and some rational analyzing. Simple reason being the cases of marbles dropping sounds being heard should be examined 1 at a time.
No equipment is necessary. There are many plausible explanations, and each incident should be investigated based on its own merit. Firstly we will need to realize that all kinds of piping run within the floor slabs and walls of a high-rise building. These include our sanitary or soil pipes you know… the ones which carries our waste.. All these pipes have the potential of causing marble-like dropping sounds in our high-rise flats. Poorly maintained or serviced equipment too can use marbles dropping sounds when they are turned on.
Therefore, the explanations would generally fall along the following lines. Marbles sounds by children playing usually sound like many marbles are thrown onto the floor, and the sounds are frequent and inconsistent. When water is re-introduced into the piping system, pockets of air bubbles are formed as the water rushes in to replace the air.
If you recall at times when you open the tap, and sometimes the 1st few gush of water is intermittent with air spurting out. Such gushes of water with air trapped within its flow will cause the water hammering sounds, which may travel through the concrete surfaces and appears like marbles dropping sounds. This kind of marble sounds appears only briefly and is seldom repeated for the rest of the night. This usually occurs at night when the pipes are not so often used, and there is a sudden release of soapy water flowing down the pipes.
This usually occurs when the higher floor units flushes down sufficient quantity of soap water. A similar bubbly situation would also occur when are already plenty of soapy water at the base of the piping system due to many residents bathing at the same time. Each sanitary pipe stack has vents at the roof top to allow air to escape out.
Usually marbles sounds of this sort will be only singular sound of 1 marble means only sound like 1 marble dropping is heard. Such sounds can manifest itself as marble dropping noises. Such sounds are faint, and often continuous.
The sounds also appear when the old aircon or compressor unit is turned on. When air-conditioning units operates, water condensation takes place, and are discharged via a small water pipe that will terminate into a sanitary pipe. Sometimes sediments or debris within the sanitary pipe will cause more water to be stored at the pipe elbow.
This mechanism would be opened by running water, and closed when the water has ceased running. Thus a constant flow of water will caus ethe mechanism to open and shut continuously, and the sounds emitted will sounds very identical to the marble dropping sounds.
Our high-rise apartments have many equipments like water tanks, lifts, motor rooms, switch rooms etc. Condominiums would have even more facilities like swimming pools, tennis courts, artificial waterfalls etc. These also means alot more chance for vibrations caused by running engines, motors, turbines etc. All these vibration causing equipment has the potential of creating rattling sounds in walls and ceilings when they are start up. These kind of marble sounds usually sounds mechanical, last for a period of time, and is constant during the period the sound is heard.
API is part of the growing community fighting to save the resting place of our forefathers, from being destroyed by the present day government, through the construction of a 8 lane highway to replace the current Lornie Road. Learn about them in Bukit Brown, and the Pride of being a Singaporean. Join the Bukit Brown's community Facebook page. Asia Paranormal Investigators.
Children playing with marbles Children playing with marbles in the old days Though the Marble Dropping Phenomena was considered widespread, no one really dared to talk or even admit publicly that he or she had such a problem.
Are you hearing a squeal, clunk, or bang coming from your vehicle? Read on to find out how to take note of these issues and describe them to our service advisors. So, when you hear your vehicle making a weird noise, you want to get it taken care of as soon as possible.
However, sometimes finding the right words to describe the issue to our Service Advisors can be tricky. When you hear a strange noise, pay attention to the outside conditions.
Take note of the temperature, time of day, speed of travel, etc. For instance, if our Service Advisors know that the noise happens when you start your vehicle first thing in the morning they can have you drop the vehicle off the night before for a cold start on the day of your appointment. When a vehicle enters the shop, our technicians need to recreate the problem in order to properly diagnose and then repair the issue.
But this makes pinpointing the origin even more challenging. If it involves water compressing trapped gas, somehow the water mass is decreasing—or the gas volume decreasing—for the frequency to increase as it does. As the water flows away or air dissipates, the sound resonates more loudly before fading away, imitating the sound of a dropped marble bouncing on the floor, then rolling across it.
Water hammer is a knocking noise in a water pipe that occurs when a tap is turned off briskly. The water hammer effect causes the pipe to displace from its equilibrium position. It jerks up, then falls back down, and hits the nearby object—say, a beam in the ceiling. And after a few cycles, the motion is now too small to hit the object again, and the event is over. Wilson says whether the sound comes across as more like marbles or pins depends on several factors, such as how securely the pipe is attached to the building structure, how long the free run of the pipe is, what orientation it is in, and the exact nature of the water hammer.
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