| Summary: | 碩士 === 國立雲林科技大學 === 創意生活設計系 === 107 === This research uses CNS 15160-7 National Standard Acoustics – Measurement of sound insulation in buildings and of building elements – Field measurements of impact sound insulation floors to measure the on-site floor impact sound of highrise activity centers of public elementary schools, and administer questionnaire surveys to teachers and students operating below the activity centers. The research has four aims: 1) to conduct on-site experiment of the floor impact sound of existing campus activity centers; 2) to investigate the perception of classroom users on the effects of floor impact sound; 3) to analyze the subjective impact on the hearing and psychological wellbeing of floor impact sound on teachers and students; 4) to establish baselines for subsequent control of the floor impact sound of future campus activity centers, to ensure both the teaching quality and the physical and mental health of students.
This study completed measurements of floor impact sound for five public elementary school highrise activity centers. Results show that the normalized impact sound pressure level of lightweight impact 〖L'〗_(n,w) is 47 ~ 61dB, and the standardized impact sound pressure level 〖L'〗_(nT,w) is 31 ~ 44 dB; as for heavyweight impact, the normalized impact sound pressure level 〖L'〗_(n,w) is 43 ~ 52 dB, and the standardized impact sound pressure level 〖L'〗_(nT,w) is 27 ~ 37 dB, all below the standard value. Questionnaire survey found that, regarding "the perception of noise environment in the teaching venue," teachers consider the noise "in the tested area" (mean value 2.26) as the primary noise source. Teachers identify the sound from "the floorspace above" (mean value 1.04) as having the lowest interference to class activities. Students identified "the tested area" (mean value 1.80) as the primary noise source that interfered with class activity, while the "floorspace above" (mean value 1.14) has lower interference impact than "neighboring teaching area" (mean value 0.89). The results indicate that the floor impact sound has little impact on the teachers and students surveyed in this study.
In summary, the above experiment and questionnaire survey data indicates that the sound insulation design of the flooring of the highrise activity centers is of good quality. The raised wooden flooring and the PU flooring adopted by the schools included in this study have good insulation effect on floor impact sound, and the PU flooring, in particular, demonstrated excellent insulation effect and was able to maintain a low impact profile to the teaching space below.
|
|---|
