【 Weak current College 】 acoustic decoration of walls of vibration and acoustic-Power By 【 China power house network 】

For better sound insulation, need greater weight and more isolated. More weight means that the use of concrete or concrete blocks. In the density, the same thickness of concrete, heavier than light sound *. Isolation is found to reduce the sound from the wall side coupled to the other side.

Shock absorber bar

Shock absorber is the middle hole punched strip metal, perforated can make shock absorber bar less rigid *, helping to reduce the coupling between the walls. Lab tests, especially wood joist, get 7-10db increments. But in the site environment to obtain such acoustic effect, you must carefully install shock absorber, which are often difficult and cumbersome. Correct installation to ensure that "not short circuit", that is, the gypsum board cannot and joist. Hanging on the wall cabinets and plinth was nailed to wear keel will reduce the vibration of sound effects. We basically do not see satisfactory shock absorber of the installation.

Staggered keel

For wood joist, you can use 2 × 4cm vertical joist staggered installed in 2 × 6cm rim joist, keel alternating supporting wall every surface of the gypsum board. (This does not apply to light steel keel, because keel edge will not nailed where drilling). Keel staggered improves sound * can, but still there are connections around keel.

Double-deck joist

Wall on each side of the separation of heaven and Earth than single keel can increase 10-15db keel. Subcontractors have found such a wall is very good and sound * energy potential is very good.

There is such a case, a developer will be a unit houses sold to a lawyer, and assure him that the House and the neighborhood is sound. Partition is in single-layer keel-absorbing material. Lawyer since I heard the noise of the next door, on the partition wall sound * can not be satisfied. Developers try on one side of the wall, plus a layer of gypsum board. Lawyers still not satisfied, but there is no wall install anything elsestructure space, wall of sound transmission loss is nic42. Finally, developers will have to buy back the House, and to bear the loss, he is very depressed.

The developers in the development of another item, look for help. He very carefully installed double-deck joist wall. He even the side walls of the ground are separated, so that each element of the framework structure are separate. This sound transmission loss reached after processing, nic58 achieve the desired effect. So the developers are proud to want to buy a house in person to see sample room sound * can is so good.

Fire protection and stability

It is clear that the double wall system, the keel of just * connection reduces sound * can, so you must carefully design the separation wall of separation support structure.