Are the sewer pipes in high rise restrooms noisy?

Sewer noise is generally caused by the low-frequency noise caused by the water hitting the pipe wall and the high-frequency noise of the large water flow during flushing. The root cause of noise in household sewer pipes is the main source of noise caused by the vibration caused by the water flow hitting the pipe wall. The sound is amplified by repeated refraction in the pipe, and the most likely location for household pipe noise is the elbow of the pipe, and the straight pipe wall is the culprit of sound wave reflection and resonance.

The greater the drainage flow and velocity, the thinner the pipe wall, the louder and intensified the noise due to resonance.

How can I reduce the noise? At present, ordinary noise prevention and control is mainly done by soundproof cotton, although it can greatly reduce noise, but it is only a simple isolation of noise, and it cannot be fundamentally solved. If you want to go to the next level in the ordinary sound insulation effect, we have to start from the source of noise, a new generation of sound damping sheet will solve this problem very well, the vibration of the pipe wall is the main reason, the use of damping sheet + sound insulation cotton together, it will greatly reduce the vibration of the pipe wall, so as to reduce the generation of noise, to achieve the maximum sound insulation effect.

If the height of the bathroom allows, try to lower the ceiling, increase the distance between the ceiling material and the water pipe, or use cheap PVC to hang the upper roof, and then hang one layer below.

Modern building technology is mature and developed, and sewer noise is not a problem, let alone a floor.

The general noise will not affect life, most of the current sewer pipes are PVC pipes, this sound is slightly louder, but there is no need to avoid it too much, just wrap it directly with PVC gusset.

The normal practice is to wrap it with red bricks or light bricks, and then cement plastering, and paste the tiles after the tiles, so that no sound can be heard.

Shenhuo sewer pipe silencing + sound insulation system is a double-layer structure to deal with the noise problem of sewer pipes as a whole.

The first layer: Shenhuo's special sound-absorbing and shock-absorbing plate, which can solve 90% of the noise of the low frequency of the sewer pipe.

The second layer: Shenhuo nano soundproof cotton, which solves 60% of the noise of the sewer pipe at high frequency.

Do what you say, don't worry about it at all, it's the best soundproofing measure right now.

What if there is a negative pressure sound?