Investigation on floor impact noise difference between Rhamen and wall-column constructions using vibration analysis

Floor impact noise generation depends on the configuration of building structures. Especially, the Rhamen construction is known to radiate less than the wall-column construction. In this study, the sound radiation mechanisms between the two different structures are compared through experimentation using laboratory setup of the scaled model. The transfer of vibration energy from external impact source is calculated and compared with the measured results. Parameters affecting the radiated sound energy are determined and evaluated. The in and out-of phase vibrations of the building floors resulted in tonal sound radiation at two-closely located frequencies which resulted in modulated floor impact sound. This modulation increased the annoyance on the residents. Eventually, a design method to efficiently reduce the floor impact sound is proposed.