Flanking Transmission at the Wall/Floor Junction in Multifamily Dwellings - Quantification and Methods of Suppression

The primary focus of this project is flanking transmission in wood framed construction caused by the junction of a partition wall and floor that had continuous structural elements which pass under the partition wall separating two multifamily dwellings. Flanking transmission is sound transmission between two rooms by paths other than directly through the nominally separating wall or floor assembly. Flanking exists in all buildings and its importance in determining the apparent sound insulation (that perceived by the occupants) will be a function of the construction details of the walls, floors and their junctions.Le projet porte principalement sur la transmission indirecte du son dans les constructions \ue0 ossature de bois, caus\ue9e \ue0 la jonction cloison-plancher par des \ue9l\ue9ments de charpente continus qui passent sous le mur entre deux logements s\ue9par\ue9s horizontalement dans un immeuble d'habitation. La transmission indirecte est la transmission du son entre deux pi\ue8ces par des voies autres que les voies directes de transmission \ue0 travers la cloison de s\ue9paration nominale ou le plancher. La transmission indirecte existe dans tous les b\ue2timents et son importance dans la d\ue9termination de l'isolation acoustique apparente (celle per\ue7ue par les occupants) est fonction des d\ue9tails de construction des murs et des planchers, ainsi que de leurs jonctions.Peer reviewed: NoNRC publication: Ye