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A research project conducted in the acoustical laboratory of the National Research Council of Canada, on behalf of the Canada Mortgage and Housing Corporation. The objective of this research was to determine the acoustical performance of various types of ceiling materials and installations and of several sound absorptive materials used to build floor/ceiling assemblies in wood construction; the report is available in both French and English.

A research project conducted in the acoustical laboratory of the National Research Council of Canada, on behalf of the Canada Mortgage and Housing Corporation. The objective of this research was to determine the acoustical performance of various pipes and plumbing installations; the report is available in both French and English.

A research project conducted in the acoustical laboratory of the National Research Council of Canada, on behalf of the Canada Mortgage and Housing Corporation. This project was a first attempt to validate a procedure using intensimetry to field measure the noise generated by fans; the report is available only in English.

A research project conducted in the acoustical laboratory of Concordia University, on behalf of the Canada Mortgage and Housing Corporation. The objective of this research was to test the acoustical performance of various types of doors and sound gaskets; the report is available only in English.

A research project conducted in field conditions, on behalf of the Canada Mortgage and Housing Corporation. The objective of this research was to determine the efficiency of different economical noise and vibration control devices which can be incoporated to garage doors to silence their operation. An executive summary was produced by the Canada Mortgage and Housing Corporation in both French and English. The research report is available only in French.

A research project subsidized by the Canada Mortgage and Housing Corporation. The objective of the first phase of this research was to set forth noise control criteria and to develop a procedure for evaluating the degree of acoustic comfort provided in multi-family structures. The executive summary is available in English but the full report of this research is available only in French.

A research project subsidized by the Canada Mortgage and Housing Corporation. In Phase ll of this research, the noise isolation criteria set forth during Phase l are validated using on site measurements, and a procedure for evaluating the degree of acoustic comfort provided in units in multi-family structures is proposed; the original report in French will be translated and will soon be available in English. An executive summary was produced by the Canada Mortgage and Housing Corporation in English

A research project conducted in the acoustical laboratory of the Domtar Research Center on behalf of the Canada Mortgage and Housing Corporation. The objective of this research was to test the acoustical performance provided by various types of fixed and operable windows in residential projects; the report is available in both French and English.

A research project conducted in the acoustical laboratory of the Domtar Research Center on behalf of the Cast Iron and Soil Pipe Association. The objective of this research was to characterize and compare the noise produced by water flowing inside DWV pipes made of CAST IRON, ABS and PVC pipes. All the tests were conducted in the same experimental conditions which allows to directly compare the acoustical performance of the different pipes tested.  An executive summary was produced by the Canada Mortgage and Housing Corporation in both French and English. The research report is available only in English.

MJM was commissioned by the Canada Mortgage and Housing Corporation to analyze and compare the results of over 350 sound transmission loss tests conducted on a wide variety of partitions constructed with gypsum board, tested in the acoustical laboratories of the National Research Council of Canada. The results of these measurements were first published in IRC internal reports no IRC-IR-693 and no 761.  The research report produced by MJM ACOUSTICAL CONSULTANTS INC. is available in both French and English.

Several regulations and co-property acts allow condominium owners to install hard floor coverings provided that a minimum impact sound isolation rating is achieved. Many construction professionnls recommend such surfaces based on tests performed using the procedures described in ASTM E 492 or ASTM E 1007. During the present study, thirty-five bare concrete slabs with thicknesses ranging from 200 to 250 mm (8 to 10 in.) were randomly tested in different buildings in Montreal using the procedures outlined in ASTM E 1007. The large variations noted in the measured NISPLs and FIIC ratings suggest that the results of tests made in strict conformance with ASTM E 1007 are anecdotal and cannot be used by acousticians and construction professionals to predict the impact noise isolation provided by a floor covering installed on a "typical" 200 mm (8 in.) to 250 mm (10 in.) thick concrete slab. This paper presents the results of these measurements and proposes a statistical approach to predict the probability that a floor installed on a typical 200 to 250 mm thick concrete slab will achieve the noise isolation target set forth in the regulation, or in the co-property act (usually FIIC 55 in Canada and FIIC 50 in USA).