Construction details affecting flanking transmission in cross laminated timber structures for multi-story housing

Neusser, Maximilian; Bednar, Thomas

doi:10.3397/in_2022_0159

Cited by 1 publication

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, stiffer resilient interlayers are chosen lower down in the building compared to the upper levels. As the literature [45,53] shows, stiffer resilient interlayers contribute to a higher vibration transmission over a junction. Therefore, it could be argued that the result obtained in this study is related to the difference in stiffness of the resilient interlayers over the number of stories.…”

Section: In-depth Analysismentioning

confidence: 93%

“…The relation between the load and stiffness is expected to be more relevant, since the resilient interlayers' stiffness could directly affect the vibration reduction index, as shown for some materials in Refs. [45,53]. Moreover, load combinations of just the bare CLT are only possible to be retrieved for some projects.…”

Section: In-depth Analysismentioning

confidence: 99%

“…In the literature, several authors collected and measured the vibration reduction index of CLT elements, including Refs. [44][45][46][47][48][49]. Schoenwald et al [50] presented vibration reduction index measurements of CLT elements via different connection methods that are used to predict the flanking sound transmission.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Building Height on the Sound Transmission in Cross-Laminated Timber Buildings—Vibration Reduction Index

Nilsson,

Ménard,

Bard

et al. 2023

Buildings

View full text Add to dashboard Cite

High-rise wooden buildings are increasing in popularity, and they typically include cross-laminated timber in the structure. Taller buildings result in higher loads on the junctions lower down in the building, which are suggested in the literature to negatively affect the sound insulation. This study involved measurement of the vibration reduction index in four different CLT buildings, varying in height and junction details. A total of 12 junctions were measured at both high and low levels in the buildings. Among these, 10 junctions had resilient interlayers with different stiffnesses dependent on the designed quasi-permanent load, while 2 junctions lacked resilient interlayers. The results indicated that the vibration reduction index decreases lower down in the building mainly for the Wall–Wall path. The findings were consistent for all measured junctions above 400 Hz for the Wall–Wall path and for the majority of the measurements of the remaining frequency range, 400 Hz and below. The observed difference in the vibration reduction index could significantly impact the final result if a high-rise building has several flanking paths that affect the sound insulation between two apartments, and this needs to be considered during the design phase. Similar effects were shown for buildings both with and without resilient interlayers in the junctions.

show abstract

Section: In-depth Analysismentioning

confidence: 93%

Section: In-depth Analysismentioning

confidence: 99%