- Author
- Nightingale, T. R. T. | Halliwell, R. E.
- Title
- Flanking Transmission at Joints in Multi-Family Dwellings. Phase 1. Effects of Fire Stops at Floor/Wall Intersections.
- Coporate
- National Research Council of Canada, Ottawa, Ontario
- Report
- Internal Report IRC-IR-754, December 1997, 151 p.
- Keywords
- multifamily housing | firestops | floors | walls | transmission | load bearing elements | party walls
- Abstract
- Fire stops can introduce a physical connection between the two sides of a double-stud wall, hence providing structural flanking paths for transmission of vibration which worsens the sound insulation. This study primarily addressed the specific case of a load-bearing party wall with double wood studs, supporting a floor with wood joists perpendicular to the party wall and a floor deck or sublfoor of 15.9 mm OSB. Group 0 Constructions have no physical fire stop. Group 1 Constructions do not transmit significant vibration either through bending moments or in-plane forces. Group 2 Constructions transmit appreciable vibration through in-plan forces, but not through bending moments. Group 3 Constructions transmit structural vibration primarily by bending moments, and tend to give the strongest flanking effect.