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Evaluating the Acoustic Performance of Multi-Unit Residential Buildings and the Associated Effects of Noise Exposure on Occupants' Comfort.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluating the Acoustic Performance of Multi-Unit Residential Buildings and the Associated Effects of Noise Exposure on Occupants' Comfort./
Author:	Andargie, Maedot Solomon.
Description:	1 online resource (243 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-05, Section: A.
Contained By:	Dissertations Abstracts International84-05A.
Subject:	Acoustics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29327017click for full text (PQDT)
ISBN:	9798357547026

Evaluating the Acoustic Performance of Multi-Unit Residential Buildings and the Associated Effects of Noise Exposure on Occupants' Comfort.
Andargie, Maedot Solomon.

Evaluating the Acoustic Performance of Multi-Unit Residential Buildings and the Associated Effects of Noise Exposure on Occupants' Comfort. - 1 online resource (243 pages)

Source: Dissertations Abstracts International, Volume: 84-05, Section: A.

Thesis (Ph.D.)--University of Toronto (Canada), 2022.

Includes bibliographical references

Exposure to noise can cause annoyance, disturbance of daily activities and increase the risk of adverse health issues. Despite these recognized risks, exposure to high levels of noise is increasing due to population growth and urbanization. Occupants who live in multi-unit residential buildings (MURBs) are at an increased risk because, in addition to outdoor noise, they can be exposed to noise from various indoor sources, such as neighbours, elevators, and heating, ventilation and air conditioning (HVAC) systems, which can increase occupants' overall noise exposure. Compared to single-family homes, MURB occupants also have very limited noise mitigation strategies available to them which can worsen their perception of their acoustic environment. To enhance current knowledge on acoustic comfort in MURBs, surveys and field measurements of sound insulation and outdoor noise levels were used in this dissertation to examine the effects of noise on occupants and explore acoustic and non-acoustic factors that affect occupants' perception of noise. The results showed that indoor noise from neighbours and HVAC systems, and outdoor noise from traffic and construction are the most problematic noise sources. The analysis identified annoyance, effects on work performance at home and sleep disturbance as key effects of noise. However, there was a weak correlation between measured acoustic conditions and reported annoyance levels. Occupants in buildings with low indoor noise levels (LAeq,24h = 35.7-36.8 dB) expressed higher outdoor noise annoyance levels than those with LAeq,24h above 40 dB. Similarly, occupants in a building with a high impact sound insulation level (AIIC 62) had similar impact noise annoyance levels to those in buildings with AIIC 31-32. Exposure to outdoor noise was identified as an important factor that can provide a masking effect to indoor noise and reduce reported annoyance due to indoor noise. The effects of outdoor noise however depend on suite location. The results also showed that AIIC correlates better with the perceived effect on work performance compared to annoyance level. The finding suggests that disturbance of work and other activities can be used as additional metrics to assess the relationship between acoustic comfort and sound insulation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798357547026Subjects--Topical Terms:

879105
Acoustics.
Subjects--Index Terms:

Acoustic comfortIndex Terms--Genre/Form:

542853
Electronic books.

Evaluating the Acoustic Performance of Multi-Unit Residential Buildings and the Associated Effects of Noise Exposure on Occupants' Comfort.
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520 $a Exposure to noise can cause annoyance, disturbance of daily activities and increase the risk of adverse health issues. Despite these recognized risks, exposure to high levels of noise is increasing due to population growth and urbanization. Occupants who live in multi-unit residential buildings (MURBs) are at an increased risk because, in addition to outdoor noise, they can be exposed to noise from various indoor sources, such as neighbours, elevators, and heating, ventilation and air conditioning (HVAC) systems, which can increase occupants' overall noise exposure. Compared to single-family homes, MURB occupants also have very limited noise mitigation strategies available to them which can worsen their perception of their acoustic environment. To enhance current knowledge on acoustic comfort in MURBs, surveys and field measurements of sound insulation and outdoor noise levels were used in this dissertation to examine the effects of noise on occupants and explore acoustic and non-acoustic factors that affect occupants' perception of noise. The results showed that indoor noise from neighbours and HVAC systems, and outdoor noise from traffic and construction are the most problematic noise sources. The analysis identified annoyance, effects on work performance at home and sleep disturbance as key effects of noise. However, there was a weak correlation between measured acoustic conditions and reported annoyance levels. Occupants in buildings with low indoor noise levels (LAeq,24h = 35.7-36.8 dB) expressed higher outdoor noise annoyance levels than those with LAeq,24h above 40 dB. Similarly, occupants in a building with a high impact sound insulation level (AIIC 62) had similar impact noise annoyance levels to those in buildings with AIIC 31-32. Exposure to outdoor noise was identified as an important factor that can provide a masking effect to indoor noise and reduce reported annoyance due to indoor noise. The effects of outdoor noise however depend on suite location. The results also showed that AIIC correlates better with the perceived effect on work performance compared to annoyance level. The finding suggests that disturbance of work and other activities can be used as additional metrics to assess the relationship between acoustic comfort and sound insulation.
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