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Construction details affecting flanking transmission in wood framed multifamily dwellings

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
ConferenceINTER-NOISE 2002: 19 August 2002, Dearborn, MI., U.S.A.
Subjectflanking transmission, wood frame, construction details; Flanking; Walls; Floors
Abstract
The measurement phase of a three-year project at the National Research Council Canada to study flanking transmission in wood-framed construction under controlled conditions was recently completed. The focus was horizontal and vertical flanking paths involving thewall/floor junction in multifamily buildings built to resist wind or seismic loads. This paper reports on the effect of joist orientation (relative to the wall/floor junction), junction blocking details, joist type (solid lumber vs. wood-I joists), and wall framing (double stud, single stud or single stud shear walls) for airborne excitation. Significant effects were observed between rooms separated by the partition wall when subfloor continuity across the junction waschanged, when joist orientation was changed from parallel to the wall to perpendicular, and when wall framing was changed from single to double stud. For both horizontally and vertically separated rooms, the dominant flanking path typically involves the floor surface, ifit is simply a layer of plywood or oriented strand board. Data are presented showing the effectiveness of toppings to control flanking transmission involving the bare floor. (INTER-NOISE companion paper - Vibration response of floors and the effectiveness of toppings to control flanking transmission). Estimates of the flanking sound insulation for the various paths are compared and their importance ranked.
Publication date
LanguageEnglish
Peer reviewedNo
NRC numberNRCC 44707
NRCC 14423
NPARC number20378943
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Record identifier12a832ca-8fbc-45b4-9bbf-c305005382da
Record created2012-07-24
Record modified2020-03-30
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