Jang J., Jung M., Lee Y., Hwang Y.

In case of Korea usually walking barefoot in the room unlike Western ways, the noise from children running barefoot in apartment houses have caused a perpetual frictions between neighbors. For this reason the government established a regulation to reduce the floor impact noise, as a result almost all apartment houses have been enforced to use the floor structure with 210mm thickness concrete slab and 120mm thickness of floor heating system since June 2005. If do not want to apply this kind of system, they should have to use the system which obtain the certification from the institution appointed by government. In this reason a lot of construction material companies and construction companies have tried to develop the system with 180mm thickness concrete slab which could reduce the cost. To develop the optimized floor system, actual size test building were constructed and the materials related with reducing floor impact noise were composited and tested on the test building. Through this procedure the most effective system were found.