@techreport{HoellerMahnQuirtetal., author = {H{\"o}ller, Christoph and Mahn, Jeffrey and Quirt, David and Schoenwald, Stefan and Zeitler, Berndt}, title = {Apparent sound insulation in cross-laminated timber buildings}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23002009}, pages = {116}, abstract = {This Report presents the results from experimental studies of airborne sound transmission, together with an explanation of calculation procedures to predict the apparent airborne sound transmission between adjacent spaces in a building whose construction is based on cross-laminated timber (CLT) panels. There are several types of CLT constructions which are commercially available in Canada, but this study only focused on CLT panels that have adhesive between the faces of the timber elements in adjacent layers, but no adhesive bonding the adjacent timber elements within a given layer. There were noticeable gaps (up to 3 mm wide) between some of the timber elements comprising each layer of the CLT assembly. These CLT panels could be called "Face-Laminated CLT Panels" but are simply referred to as CLT panels in this Report. Another form of CLT panels has adhesive 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 are referred to as "Fully-Bonded CLT Panels" in this Report. Because fully-bonded CLT panels have different properties than face-laminated CLT panels, the sound transmission data and predictions in this Report do not apply to fully-bonded CLT panels.}, language = {en} } @techreport{MahnQuirtHoelleretal., author = {Mahn, Jeffrey and Quirt, David and H{\"o}ller, Christoph and M{\"u}ller-Trapet, Markus}, title = {Addendum to RR-335: sound transmission through Nail-Laminated Timber (NLT) assemblies}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/40000417}, abstract = {This report is published as an addendum to NRC Research Report RR-335 "Apparent Sound Insulation in Cross-Laminated Timber Buildings." It is intended that this addendum will be merged with RR-335 in the future as a report for predicting the sound insulation in buildings using mass-timber constructions including NLT assemblies. This report presents the results from experimental studies of airborne sound transmission through assemblies of nail-laminated timber (NLT) with various linings. To put the data presented in this report in the proper context, this report begins with a brief explanation of calculation procedures to predict the apparent sound transmission class (ASTC) between adjacent spaces in a building whose structure is a combination of mass-timber assemblies such as nail-laminated timber (NLT) or cross-laminated timber (CLT) panels.}, language = {en} } @techreport{HoellerQuirtZeitleretal., author = {H{\"o}ller, Christoph and Quirt, David and Zeitler, Berndt and Sabourin, Ivan}, title = {Apparent sound insulation in cold-formed steel-framed buildings}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23001843}, abstract = {This Report presents the results from substantial experimental studies of sound transmission, together with an explanation of calculation procedures to predict the sound transmission between adjacent spaces in a building whose walls and floors have cold-formed steel (CFS) framing. This first edition contains mainly data for loadbearing steel framing formed from sheet steel with thickness from 1.37 mm (16 gauge) to 0.94 mm (20 gauge). Non-loadbearing CFS studs formed from thinner steel (nominally 0.54 mm) are also commonly used but these are not included in the data tables for sound transmission through wall assemblies in this Report.}, language = {en} } @techreport{HoellerQuirtMahnetal., author = {H{\"o}ller, Christoph and Quirt, David and Mahn, Jeffrey and M{\"u}ller-Trapet, Markus}, title = {Guide to calculating airborne sound transmission in buildings}, edition = {5th edition}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/40001814}, abstract = {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). Au cours des derni{\`e}res ann{\´e}es, les scientifiques et les ing{\´e}nieurs ont fait porter leurs efforts en mati{\`e}re d'att{\´e}nuation de la transmission du son dans les b{\^a}timents davantage sur le rendement du syst{\`e}me dans sa totalit{\´e} que sur les ensembles de construction individuels. Les m{\´e}thodes normalis{\´e}es de calcul de la transmission globale, combin{\´e}es {\`a} des mesures normalis{\´e}es de caract{\´e}risation des sous-ensembles, permettent de mieux pr{\´e}dire la transmission du son entre des espaces int{\´e}rieurs adjacents. L'Organisation internationale de normalisation (ISO) a publi{\´e} une m{\´e}thode de calcul, la norme ISO 15712-1, qui utilise des donn{\´e}es d'essai en laboratoire pour les sous-ensembles, comme les murs et les planchers, comme donn{\´e}es d'entr{\´e}e en vue d'une m{\´e}thode d{\´e}taill{\´e}e de calcul de la transmission du son pr{\´e}vue entre des pi{\`e}ces adjacentes dans un b{\^a}timent. Cette norme fonctionne tr{\`e}s bien pour certains types de construction, mais pour l'utiliser dans un contexte nord-am{\´e}ricain, il faut surmonter deux obstacles - l'incompatibilit{\´e} avec les normes ASTM utilis{\´e}es par notre industrie de la construction et la faible exactitude de ses pr{\´e}visions pour la construction {\`a} ossature de bois ou d'acier l{\´e}g{\`e}re. Pour contourner les limites de la norme ISO 15712-1, le pr{\´e}sent guide explique comment fusionner les donn{\´e}es d'essai de l'ISO et de l'ASTM dans la m{\´e}thode de calcul de l'ISO, et formule des recommandations relativement {\`a} l'application de m{\´e}thodes {\´e}largies de mesure et de calcul pour des types de construction courants. Le pr{\´e}sent guide a {\´e}t{\´e} {\´e}labor{\´e} dans le cadre d'un projet mis sur pied par le Conseil national de recherches du Canada afin d'appuyer la transition de la pratique de l'industrie de la construction vers l'utilisation d'un indice de transmission du son apparent (ITSA) satisfaisant aux objectifs de r{\´e}duction rigoureux du Code national du b{\^a}timent du Canada (CNBC). Toutefois, l'{\´e}ventail potentiel d'applications va au-del{\`a} des exigences minimales du CNBC - le Guide facilite aussi une conception visant {\`a} am{\´e}liorer l'insonorisation et devrait s'appliquer de fa{\c{c}}on g{\´e}n{\´e}rale {\`a} la construction tant au Canada qu'aux {\´E}tats-Unis. La pr{\´e}sente publication contient un ensemble limit{\´e} d'exemples pour plusieurs types de construction, afin de fournir une introduction et un aper{\c{c}}u de la m{\´e}thode de calcul de l'ITSA. On trouvera d'autres exemples et donn{\´e}es de mesure dans les documents d'accompagnement du pr{\´e}sent guide, {\`a} savoir, les rapports de recherche RR-333 {\`a} RR-337 du CNRC. De plus, la m{\´e}thode de calcul d{\´e}crite et illustr{\´e}e dans le pr{\´e}sent guide est {\´e}galement utilis{\´e}e par l'application Web soundPATHS, disponible gratuitement sur le site Web du Conseil national de recherches du Canada (voir les r{\´e}f{\´e}rences {\`a} la section 7 du pr{\´e}sent guide pour les d{\´e}tails d'acc{\`e}s).}, language = {en} } @techreport{HoellerQuirtMuellerTrapet, author = {H{\"o}ller, Christoph and Quirt, David and Mueller-Trapet, Markus}, title = {Apparent sound insulation in wood-framed buildings}, publisher = {National Research Council of Canada. Construction}, doi = {10.4224/23002820}, abstract = {This Report presents the results from substantial experimental studies of sound transmission, together with an explanation of calculation procedures to predict the sound transmission between adjacent spaces in a building with wood-framed walls and floors. This Report presents two types of experimental data for wood-framed constructions: - Test data for direct sound transmission through typical wood-framed wall assemblies and wood-framed floor assemblies, plus a summary of trends for such constructions and references to compilations of additional data - Test data for flanking sound transmission measured following the procedures of ISO 10848 for coupled wall/floor junctions and wall/wall junctions Worked examples for calculating the apparent sound transmission class (ASTC) rating between adjacent dwelling units are presented to illustrate how the experimental data can be applied.}, language = {en} } @inproceedings{HoellerQuirtZeitleretal., author = {H{\"o}ller, Christoph and Quirt, David and Zeitler, Berndt and Sabourin, Ivan}, title = {Apparent sound insulation in cold-formed steel-framed buildings}, series = {24th International Congress on Sound and Vibration (ICSV 24), 23-27 July 2017, London, UK}, booktitle = {24th International Congress on Sound and Vibration (ICSV 24), 23-27 July 2017, London, UK}, publisher = {Curran Associates, Inc}, language = {en} }