The shear force element for spiral staircases with a sound absorption element.
Sound absorption (english)
Type testing of Isodorn HQW soundproofed dowels
DXF drawing Schall-Isodorn-HQWDWG drawing Schall-Isodorn-HQW
sound absorption elements (german 344k)
Schall-Isodorn-HQW (german)
www.h-bau.de | 17.05.2012