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Anonymous users2024-01-23Generally, two materials are wooden, light steel, and another layer of sound insulation can also be packaged.
Sound insulation refers to isolating, isolating, separating, etc., sound or noise through certain objects, so sound insulation materials are needed. The number of decibels of incident sound energy on one side of a material in relation to the transmitted sound energy on the other side is the sound insulation of that material, usually expressed by the symbol R (dB).
Sound insulation materials or components will have different sound insulation effects due to different use occasions and different test methods. For sound insulation materials, in order to weaken the transmitted sound energy and block the transmission of sound, it cannot be as porous, loose and breathable as sound-absorbing materials, on the contrary, its material should be heavy and dense, such as steel plates, lead plates, brick walls and other materials. Sound insulation material: The requirements of sound insulation material are dense and free of pores or gaps; There is a large weight.
Because this kind of sound insulation material is dense, it is difficult to absorb and transmit sound energy and the reflection energy is strong, so its sound absorption performance is poor. Sound insulation materials can attenuate transmitted sound energy to 10-3 10-4 times or less of incident sound energy, and for ease of expression, its sound insulation volume is expressed in decibel metering methods.
There are many small holes inside the sound-absorbing material, and after the sound wave enters, it will be reflected, so that after the superposition of the sound wave, the sound will become smaller, so the sound-absorbing material is to prevent echo, and is generally used in studios, cinemas and other places that are prone to echo.
Soundproofing materials are used to block out the sound from the outside, and are generally used in bedrooms and other places with high privacy.
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Anonymous users2024-01-22ηχR (㏈
It is best to use thin cement prefabricated panels, mainly to save space.
It depends on what water and sewage pipes you choose, you can go to the market to sell water and water pipes to see after setting the pipes to explain your intentions to others, after the distance is set, people will give you the pipe fittings complete, you can also let the seller indicate on the receipt to you more refund and less compensation, so that you can take it back if you don't need it.
If the bathroom space is large, you can use red bricks to make a fake pillar. If the space is small, it will be small, so that it will not be deformed and fall off after being wet.
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