Rakennusten äänieristys ja meluntorjunta - Centria tutkimus ja kehitys

Tulokset erilaisilla kytkennöillä(2003-2006)Sound reduction index, dB- plasterboard 13 mm 11.7 kg/m 290dBuilding -research projectThe study of purlins and rails.ISO 140-3FINAL SUMMARY (July 22, 2006)80 specimen 10 m 2Separate steel purlins and rails, separate frames (construction70joint) 62 dBSeparate steel purlins and rails, common frame, 57 dB60Separate steel purlins, common rails, 53 dB50Vertical wood purlins 150 mm, crosswise flexible purlin AP 25mm, common rails, 52 dB40Flexible purlins (AWS), common rails, 50 dB30Semiflexible purlins (Thermo), common rails, 48 dB20Constant structures:Vertical wood purlins 125 mm, crosswise wood purlins 50 mm,- plasterboard 13 mm 11.7 kg/m 245 dB- cavity 175 mm and mineral wool with10varying purlins and rails (see labels)Wood purlins, wood rails, 42 dB0ISO 717-1 at 52 dB5080125200315500Frequency, Hz80012502000315050008000Hongisto/Ylivieska 29.9.2010 85Intensiteettikartta, puurangat, 500 Hz255024502350225021502050195018501750165015501450135012501150105095085075065055045035025015050500 Hz48-5145-4842-4539-4236-3933-3630-3327-3024-2721-245025045065085010501250145016501850205022502450265028503050325034503650Hongisto/Ylivieska 29.9.2010 8643