Skip header and navigation

Refine Results By

124 records – page 1 of 7.

Predicting the Human-Induced Vibration of Cross Laminated Timber Floor Under Multi-Person Loadings

https://research.thinkwood.com/en/permalink/catalogue2701
Year of Publication
2021
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Wang, Chang
Chang, Wen-Shao
Yan, Weiming
Huang, Haoyu
Publisher
ScienceDirect
Year of Publication
2021
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Human-Induced Vibration
Multi-Person Loadings
Numerical Modelling
Language
English
Research Status
Complete
Series
Structures
Summary
The vibration of cross laminated timber (CLT) floor is closely related to human-induced loadings. However, research and prediction approaches regarding human-induced vibration of the CLT floor have been mostly limited to a single-person excitation condition. This paper presents new prediction approaches to the vibration response of the CLT floor under multi-person loadings. The effect of multi-person loadings on the vibration performance of a CLT floor was investigated through numerical modelling, experimental testing and analytical investigation. A finite element model was developed through a computational software to perform an accurate analysis of human-induced loadings. An analytical model was established to predict human-induced vibration of the CLT floor under multi-person loadings. Experimental tests were conducted to validate the numerical modelling. Results of both numerical modelling and experimental testing showed that the vibration performance of the CLT floor under multi-person loadings was almost double that under single-person loadings. Thus, multi-person activities are more likely to cause the occupants feelings of discomfort. A method for predicting the human-induced vibration of the CLT floor under multi-person loadings was then developed. The measured response, numerical modelled response, and predicted response were compared using an existing design metric, vibration dose value (VDV). The results were largely consistent. It is therefore concluded that the proposed prediction method will enable engineers to design timber floor systems that consider multi-person loadings.
Online Access
Free
Resource Link
Less detail

Cyclic Response of Insulated Steel Angle Brackets Used for Cross-Laminated Timber Connections

https://research.thinkwood.com/en/permalink/catalogue2765
Year of Publication
2021
Topic
Seismic
Acoustics and Vibration
Connections
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Author
Kržan, Meta
Azinovic, Boris
Publisher
Springer
Year of Publication
2021
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Walls
Floors
Topic
Seismic
Acoustics and Vibration
Connections
Keywords
Angle Bracket
Sound Insulation
Insulation
Monotonic Test
Cyclic Tests
Wall-to-Floor
Stiffness
Load Bearing Capacity
Shear
Tensile
Language
English
Research Status
Complete
Series
European Journal of Wood and Wood Products
Summary
In cross-laminated timber (CLT) buildings, in order to reduce the disturbing transmission of sound over the flanking parts, special insulation layers are used between the CLT walls and slabs, together with insulated angle-bracket connections. However, the influence of such CLT connections and insulation layers on the seismic resistance of CLT structures has not yet been studied. In this paper, experimental investigation on CLT panels installed on insulation bedding and fastened to the CLT floor using an innovative, insulated, steel angle bracket, are presented. The novelty of the investigated angle-bracket connection is, in addition to the sound insulation, its resistance to both shear as well as uplift forces as it is intended to be used instead of traditional angle brackets and hold-down connections to simplify the construction. Therefore, monotonic and cyclic tests on the CLT wall-to-floor connections were performed in shear and tensile/compressive load direction. Specimens with and without insulation under the angle bracket and between the CLT panels were studied and compared. Tests of insulated specimens have proved that the insulation has a marginal influence on the load-bearing capacity; however, it significantly influences the stiffness characteristics. In general, the experiments have shown that the connection could also be used for seismic resistant CLT structures, although some minor improvements should be made.
Online Access
Free
Resource Link
Less detail

Acoustically-Tested Mass Timber Assemblies

https://research.thinkwood.com/en/permalink/catalogue2639
Year of Publication
2020
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
NLT (Nail-Laminated Timber)
Glulam (Glue-Laminated Timber)
MPP (Mass Plywood Panel)
Application
Floors
Walls

Vibrations in Cross-Laminated Timber Floors: Examining Standards

https://research.thinkwood.com/en/permalink/catalogue2726
Year of Publication
2020
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Svensson, Lisette
Berghem, Emma
Year of Publication
2020
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Vibration
FEM
Finite Element Method (FEM)
Eurocode 5
Calculatis
Language
English
Research Status
Complete
Summary
The report aims to investigate norms, standards, guidelines and experience within the industry for how to design CLT (cross-laminated timber) regarding vibrations induced from humans. The following is being researched, ISO137, KL-trähandboken, Eurocode 5 and a new unpublished working draft of Eurocode 5 final working draft, Canadian CLT handbook and Cross-laminated timber structural design according to Eurocode from Austria.The conclusion is that the literature for CLT is non-existent in the current Eurocode 5 which only addresses timber floors with joists, however the new Eurocode draft suggests an update to include CLT which is similar to the norm CLT from Austria.The report contains a calculation part in which an analysis is conducted for a real project with calculations based on Eurocode 5 and the Eurocode 5 final working draft, the design tool Calculatis and FEM program RFEM. The calculations are compiled and evaluated.The calculation results show differences between the different standards. The natural frequencies are typically the same. The biggest difference is between the accelerations which is in direct relation to the modal mass, and the modal mass differs a lot between the calculations. It is understandable how Eurocode 5 final draft and RFEM calculate the modal mass, but not so for Calculatis as it doesn’t show any calculations in the technical documentation.There is a difference of the modal mass between Eurocode 5 final draft and RFEM, likely because EK5 calculate the modal mass for a rectangular floor simply supported at two or four sides. Whereas the RFEM model is not strictly rectangular nor is it simply supported everywhere, instead there are beams in some places. This suggests that caution should be regarded in calculations where floor structures have been simplified.
Online Access
Free
Resource Link
Less detail

Effects of Heavy Topping on Vibrational Performance of Cross-Laminated Timber Floor Systems

https://research.thinkwood.com/en/permalink/catalogue2708
Year of Publication
2020
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Schwendy, Benjamin
Publisher
Clemson University
Year of Publication
2020
Country of Publication
United States
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Vibration Serviceability
Concrete Topping
Panels
Insulation
Language
English
Research Status
Complete
Summary
Cross-Laminated Timber (CLT) is gaining momentum as a competitor to steel and concrete in the construction industry. However, with CLT being relatively new to North America, it is being held back from realizing its full potential by a lack of research in various areas, such as vibration serviceability. This has resulted in vague design guidelines, leading to either overly conservative designs, hurting profit margins, or leading to overly lenient designs, resulting in occupancy discomfort. Eliminating these design inefficiencies is paramount to expanding the use of CLT and creating a more sustainable construction industry. This thesis focuses on the effect of a heavy topping, in this case 2" of concrete over a layer of rigid insulation, on a CLT floor. To this end, modal analysis was performed on two spans of three CLT panels in the Andy Quattlebaum Outdoor Education Center at Clemson University. By performing a series of instrumented heel-drop tests with a roving grid of accelerometers, the natural frequencies, mode shapes, frequency response functions, and damping coefficients were determined. By comparing the results to several different numerical models, the most appropriate model was selected for use in future design. In addition, a walking excitation test was performed to calculate the root mean square acceleration of the floor for comparison to current design standards. This study found that, with a layer of rigid insulation separating the topping and the panel, the system behaved predictably like a non-composite system. The resultant mode shapes also verified that the boundary conditions behaved very close to “hinged” and showed that the combination of the surface splines and the continuous topping provide significant transverse continuity in terms of response to vibrations. Lastly, the results of the walking excitation test showed that, with some further study, the current design standards for steel vibration serviceability can be applied to great effect to CLT systems.
Online Access
Free
Resource Link
Less detail

Effect of Design Parameters on Mass Timber Floor Vibration Performance

https://research.thinkwood.com/en/permalink/catalogue2683
Year of Publication
2020
Topic
Acoustics and Vibration
Design and Systems
Material
DLT (Dowel Laminated Timber)
Application
Floors
Author
Hu, Lin
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
DLT (Dowel Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Design and Systems
Keywords
Concrete Topping
Plywood
Vibration Performance
Bending Stiffness
Language
English
Research Status
Complete
Summary
Mass timber is a generic name for a broad range of thick and heavy wood products such as cross-laminated timber (CLT), dowel-laminated timber (DLT), nail-laminated timber (NLT), and gluelaminated timber (GLT), among others. So far, vibration-controlled design methods have been developed mostly for CLT floors.
Online Access
Free
Resource Link
Less detail

Acoustic Characteristics of Cross-Laminated Timber Systems

https://research.thinkwood.com/en/permalink/catalogue2618
Year of Publication
2020
Topic
Acoustics and Vibration
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Di Bella, Antonino
Mitrovic, Milica
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Acoustics and Vibration
Design and Systems
Keywords
Wooden Building Technology
Building Acoustics
Noise Control
Flanking Transmission
Energy Efficiency
Sustainability
Language
English
Research Status
Complete
Series
Sustainability
Summary
The growing diffusion of cross-laminated timber structures (CLT) has been accompanied by extensive research on the peculiar characteristics of this construction system, mainly concerning its economic and environmental benefits, lifecycle, structural design, resistance to seismic actions, fire protection, and energy efficiency. Nevertheless, some aspects have not yet been fully analysed. These include both the knowledge of noise protection that CLT systems are able to offer in relation to the possible applications and combinations of building elements, and the definition of calculation methods necessary to support the acoustic design. This review focuses on the main acoustic features of CLT systems and investigate on the results of the most relevant research aimed to provide key information on the application of acoustic modelling in CLT buildings. The vibro-acoustic behaviour of the basic component of this system and their interaction through the joints has been addressed, as well as the possible ways to manage acoustic information for calculation accuracy improvement by calibration with data from on-site measurements during the construction phase. This study further suggests the opportunity to improve measurement standards with specific reference curves for the bare CLT building elements, in order to compare different acoustic linings and assemblies on the same base. In addition, this study allows to identify some topics in the literature that are not yet fully clarified, providing some insights on possible future developments in research and for the optimization of these products.
Online Access
Free
Resource Link
Less detail

Effet des Paramètres de Conception Sur la Performance Vibratoire des Planchers Massifs en Bois

https://research.thinkwood.com/en/permalink/catalogue2684
Year of Publication
2020
Topic
Acoustics and Vibration
Energy Performance
Material
DLT (Dowel Laminated Timber)
Application
Floors
Author
Hu, Lin
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
DLT (Dowel Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Energy Performance
Keywords
Concrete Topping
Plywood
Vibration Performance
Bending Stiffness
Language
French
Research Status
Complete
Summary
La construction massive en bois est un terme générique qui englobe une grande variété de produits du bois épais et lourds, notamment le bois lamellé-croisé (CLT), le bois lamellé-goujonné (DLT), le bois lamellé-cloué et le bois lamellé-collé (GLT). À ce jour, les méthodes de conception à vibrations contrôlées ont surtout été élaborées pour les planchers en CLT.
Online Access
Free
Resource Link
Less detail

Analysis of the Characteristics of External Walls of Wooden Prefab Cross Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2694
Year of Publication
2020
Topic
Energy Performance
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Švajlenka, Jozef
Kozlovská, Mária
Badida, Miroslav
Moravec, Marek
Dzuro, Tibor
Vranay, František
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Energy Performance
Acoustics and Vibration
Keywords
Acoustic Properties
Thermal Properties
Prefabrication
Language
English
Research Status
Complete
Series
Energies
Summary
A balanced combination of heat flows creates suitable conditions for thermal comfort—a factor contributing to the quality of the internal environment of buildings. The presented analysis of selected thermal-technical parameters is up-to-date and suitable for verifying the parameters of building constructions. The research also applied a methodology for examining the acoustic parameters of structural parts of buildings in laboratory conditions. In this research, selected variant solutions of perimeter walls based on prefab cross laminated timber were investigated in terms of acoustic and thermal-technical properties. The variants structures were investigated in laboratory but also in model conditions. The results of the analyses show significant differences between the theoretical or declared parameters and the values measured in laboratory conditions. The deviations of experimental measurements from the calculated or declared parameters were not as significant for variant B as they were for variant A. These findings show that for these analyzed sandwich structures based on wood, it is not always possible to reliably declare calculated values of thermal-technical and acoustic parameters. It is necessary to thoroughly examine such design variants, which would contribute to the knowledge in this field of research of construction systems based on wood.
Online Access
Free
Resource Link
Less detail

Apparent Sound Insulation in Mass Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue2616
Year of Publication
2020
Topic
Acoustics and Vibration
Design and Systems
Material
CLT (Cross-Laminated Timber)
NLT (Nail-Laminated Timber)
DLT (Dowel Laminated Timber)
Application
Floors
Walls
Author
Mahn, Jeffrey
Quirt, David
Mueller-Trapet, Markus
Hoeller, Christoph
Organization
National Research Council of Canada. Construction
Publisher
National Research Council of Canada. Construction
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
NLT (Nail-Laminated Timber)
DLT (Dowel Laminated Timber)
Application
Floors
Walls
Topic
Acoustics and Vibration
Design and Systems
Keywords
Airborne Sound Transmission
Apparent Sound Transmission Class
Sound Transmission
Adhesive
Language
English
Research Status
Complete
Summary
This Report presents the results from experimental studies of the airborne sound transmission of mass timber assemblies, together with an explanation of the calculation procedures to predict the apparent sound transmission class (ASTC) rating between adjacent spaces in a building constructed of mass timber assemblies. The experimental data which is the foundation for this Report includes the laboratory measured sound transmission loss of wall and floor assemblies constructed of Cross Laminated Timber (CLT), Nail-Laminated Timber (NLT) and Dowel-Laminated Timber (DLT), and the laboratory measured vibration reduction index between assemblies of junctions between CLT assemblies. The presentation of the measured data is combined with the presentation of the appropriate calculation procedures to determine the ASTC rating in buildings comprised of such assemblies along with numerous worked examples. Several types of CLT constructions are commercially available in Canada, but this study focused on CLT assemblies with an adhesive applied between the faces of the timber elements in adjacent layers, but no adhesive bonding between the adjacent timber elements within a given layer. These CLT assemblies could be called “Face-Laminated CLT Assemblies” but are simply referred to as CLT assemblies in this Report. Another form of CLT assemblies does have adhesive applied between the faces of the timber elements in adjacent layers as well as adhesive to bond the adjacent timber elements within a given layer. These assemblies are referred to as “Fully-Bonded CLT Assemblies” in this Report. Because fully-bonded CLT assemblies have different properties than face-laminated CLT assemblies, the sound transmission data and predictions in this Report do not apply to fully-bonded CLT assemblies.
Online Access
Free
Resource Link
Less detail

Ambient Vibration Measurement Data of a Four-Story Mass Timber Building

https://research.thinkwood.com/en/permalink/catalogue2211
Year of Publication
2019
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Author
Mugabo, Ignace
Barbosa, André
Riggio, Mariapaola
Batti, James
Publisher
Frontiers Media
Year of Publication
2019
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Acoustics and Vibration
Keywords
Albina Yard
Ambient Vibration Testing
Operational Modal Analysis
Language
English
Research Status
Complete
Series
Frontiers in Built Environment
ISSN
2297-3362
Online Access
Free
Resource Link
Less detail

Dynamic Characterization and Vibration Analysis of a Four-Story Mass Timber Building

https://research.thinkwood.com/en/permalink/catalogue2213
Year of Publication
2019
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

Vibrational Modal Frequencies and Shapes of Two-Span Continuous Timber Flooring Systems

https://research.thinkwood.com/en/permalink/catalogue2116
Year of Publication
2019
Topic
Acoustics and Vibration
Application
Floors
Author
Zhang, Binsheng
Kilpatrick, Tony
Publisher
Hindawi Publishing Corporation
Year of Publication
2019
Country of Publication
United Kingdom
Format
Journal Article
Application
Floors
Topic
Acoustics and Vibration
Keywords
Sound Transmission
Timber Construction
Analytical Model
Language
English
Research Status
Complete
Series
Shock and Vibration
Summary
Based on classic vibrational bending theory on beams, this paper provides comprehensive analytical formulae for dynamic characteristics of two equal span continuous timber flooring systems, including frequency equations, modal frequencies, and modal shapes. Four practical boundary conditions are considered for end supports, including free, sliding, pinned, and fixed boundaries, and a total of sixteen combinations of flooring systems are created. The deductions of analytical formulae are also expanded to two unequal span continuous flooring systems with pinned end supports, and empirical equations for obtaining the fundamental frequency are proposed. The acquired analytical equations for vibrational characteristics can be applied for practical design of two-span continuous flooring systems. Two practical design examples are provided as well.
Online Access
Free
Resource Link
Less detail

Radiation Efficiency Of Cross Laminated Timber Panels By Finite Element Modelling

https://research.thinkwood.com/en/permalink/catalogue2422
Year of Publication
2019
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Floors
Author
Zhou, Jianhui
Publisher
Canadian Acoustical Association
Year of Publication
2019
Country of Publication
Canada
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Floors
Topic
Acoustics and Vibration
Keywords
Finite Element Modelling
Abaqus
Sound Radiation Efficiency
Boundary Conditions
Language
English
Research Status
Complete
Series
Journal of the Canadian Acoustical Association
Online Access
Free
Resource Link
Less detail

Development of a Vibroacoustic Stochastic Finite Element Prediction Tool for a CLT Floor

https://research.thinkwood.com/en/permalink/catalogue2008
Year of Publication
2019
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Qian, Cheng
Ménard, Sylvain
Bard, Delphine
Negreira, Juan
Publisher
MDPI
Year of Publication
2019
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Impact Sound Insulation
Low Frequency
Simulation
Language
English
Research Status
Complete
Series
Applied Sciences
ISSN
2076-3417
Online Access
Free
Resource Link
Less detail

Calculation of Sound Insulation for Hybrid CLT Fabricated with Lumber and LVL and Comparison with Experimental Data

https://research.thinkwood.com/en/permalink/catalogue2216
Year of Publication
2019
Topic
Acoustics and Vibration
Material
LVL (Laminated Veneer Lumber)
CLT (Cross-Laminated Timber)
Author
Ju, Zehui
Zhang, Haiyang
Zhan, Tianyi
Hong, Lu
Lin, Yangfan
Lu, Xiaoning
Publisher
EDP Sciences
Year of Publication
2019
Country of Publication
France
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
CLT (Cross-Laminated Timber)
Topic
Acoustics and Vibration
Keywords
Sound Insulation
Language
English
Research Status
Complete
Series
MATEC Web of Conferences
Online Access
Free
Resource Link
Less detail

Design Guide for Timber-Concrete Composite Floors in Canada

https://research.thinkwood.com/en/permalink/catalogue2460
Year of Publication
2020
Topic
Design and Systems
Connections
Acoustics and Vibration
Fire
Material
Timber-Concrete Composite
Application
Floors
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Book/Guide
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Connections
Acoustics and Vibration
Fire
Keywords
Shear Connection
Ultimate Limit States
Vibration
Fire Resistance
Language
English
Research Status
Complete
Summary
As part of its research work on wood buildings, FPInnovations has recently launched a Design Guide for Timber-Concrete Composite Floors in Canada. This technique, far from being new, could prove to be a cost-competitive solution for floors with longer-span since the mechanical properties of the two materials act in complementarity. Timber-concrete systems consist of two distinct layers, a timber layer and a concrete layer (on top), joined together by shear connectors. The properties of both materials are then better exploited since tension forces from bending are mainly resisted by the timber, while compression forces from bending are resisted by the concrete. This guide, which contains numerous illustrations and formulas to help users better plan their projects, addresses many aspects of the design of timber-concrete composite floors, for example shear connection systems, ultimate limit state design, vibration and fire resistance of floors, and much more.
Online Access
Free
Resource Link
Less detail

The ASTC Ratings of Mid-rise Wood Constructions Using CertainTeed SilentFX® QuickCut Gypsum Board [3rd edition]

https://research.thinkwood.com/en/permalink/catalogue2615
Year of Publication
2019
Topic
Design and Systems
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Floors
Author
Mahn, Jeffrey
Organization
National Research Council of Canada. Construction
Publisher
National Research Council of Canada. Construction
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Floors
Topic
Design and Systems
Acoustics and Vibration
Keywords
Mid-Rise
Residential Buildings
Acoustic Performance
Sound Insulation
Gypsum
Fiberglass Insulation
Language
English
Research Status
Complete
Summary
The 2015 edition of the National Building Code of Canada (NBCC) includes significant changes to the acoustic requirements for residential constructions. The 2015 edition defines the acoustic requirements in terms of the Apparent Sound Transmission Class (ASTC) rating which includes contributions from flanking transmission and therefore is a better descriptor of how well the sound insulation of a building will actually protect the inhabitants of the building from unwanted noise than the STC rating which was used in earlier editions of the NBCC. The 2015 NBCC requires an ASTC rating = 47 for constructions between dwelling units. The ASTC rating that a construction will achieve depends on the design of the building elements including the gypsum board, the framing and the thermal insulation as well as the design of the junctions between the building elements. Changes to the building elements or the junctions will change the ASTC rating. Fifty five examples of the calculation of the ASTC rating for typical mid-rise wood constructions (single and triple staggered wood stud walls and floors constructed of I-joists) with 15.9 mm (5/8”) SilentFX® QuickCut gypsum board, 15.9 mm CertainTeed Type X gypsum board and CertainTeed Sustainable fiberglass insulation are presented. All of the constructions shown in the examples have an ASTC rating which is greater than 47. In addition to the examples for mid-rise wood framing, an example using 15.9 mm SilentFX® QuickCut gypsum board as a lining on a cross laminated timber (CLT) construction is also presented.
Online Access
Free
Resource Link
Less detail

Guide to Calculating Airborne Sound Transmission in Buildings: Fifth Edition, December 2019

https://research.thinkwood.com/en/permalink/catalogue2617
Year of Publication
2019
Topic
Acoustics and Vibration
Design and Systems
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Walls
Author
Hoeller, Christoph
Quirt, David
Mahn, Jeffrey
Müller-Trapet, Markus
Organization
National Research Council of Canada. Construction
Publisher
National Research Council of Canada. Construction
Year of Publication
2019
Country of Publication
Canada
Format
Book/Guide
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Walls
Topic
Acoustics and Vibration
Design and Systems
Keywords
Apparent Sound Transmission Class
Sound Insulation
Sound Transmission
Concrete
Building Code
Impact Sound
Language
English
Research Status
Complete
Summary
In recent years, the science and engineering for controlling sound transmission in buildings have shifted from a focus on individual assemblies such as walls or floors, to a focus on performance of the complete system. Standardized procedures for calculating the overall transmission, combined with standardized measurements to characterize sub-assemblies, provide much better prediction of sound transmission between adjacent indoor spaces. The International Standards Organization (ISO) has published a calculation method, ISO 15712-1 that uses laboratory test data for sub-assemblies such as walls and floors as inputs for a detailed procedure to calculate the expected sound transmission between adjacent rooms in a building. This standard works very well for some types of construction, but to use it in a North American context one must overcome two obstacles – incompatibility with the ASTM standards used by our construction industry, and low accuracy of its predictions for lightweight wood or steel frame construction. To bypass limitations of ISO 15712-1, this Guide explains how to merge ASTM and ISO test data in the ISO calculation procedure, and provides recommendations for applying extended measurement and calculation procedures for specific common types of construction. This Guide was developed in a project established by the National Research Council of Canada to support the transition of construction industry practice to using apparent sound transmission class (ASTC) for sound control objectives in the National Building Code of Canada (NBCC). However, the potential range of application goes beyond the minimum requirements of the NBCC – the Guide also facilitates design to provide enhanced sound insulation, and should be generally applicable to construction in both Canada and the USA. This publication contains a limited set of examples for several types of construction, to provide an introduction and overview of the ASTC calculation procedure. Additional examples and measurement data can be found in the companion documents to this Guide, namely NRC Research Reports RR-333 to RR-337. Furthermore, the calculation procedure outlined and illustrated in this Guide is also used by the software web application soundPATHS, which is available for free on the website of the National Research Council of Canada (see the references in Section 7 of this Guide for access details).
Online Access
Free
Resource Link
Less detail

Advanced Wood-Based Solutions for Mid-Rise and High-Rise Construction: In-Situ Testing of the Brock Commons 18-Storey Building for Vibration and Acoustic performances

https://research.thinkwood.com/en/permalink/catalogue1180
Year of Publication
2018
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Author
Hu, Lin
Cuerrier-Auclair, Samuel
Organization
FPInnovations
Year of Publication
2018
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Topic
Acoustics and Vibration
Keywords
Non-Destructive Testing
Vibration Performance
Natural Frequencies
Damping Ratios
Sound Insulation
Ambient Vibration Testing
Apparent Sound Transmission Class
Language
English
Research Status
Complete
Summary
This report addresses serviceability issues of tall wood buildings focusing on their vibration and sound insulation performance. The sound insulation and vibration performance may not affect the building’s safety, but affects the occupants’ comfort and the proper operation of the buildings and the function of sensitive equipment...
Online Access
Free
Resource Link
Less detail

124 records – page 1 of 7.