• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.11a
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• pp.1191-1196
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• 2007

This research presents a laboratory study about an annoyance of impulsive sound caused by construction site(breaker and blasting). The sources are sampled from outdoor noise and their levels range from 40 to 75 dB at the interval of 5dB. The noise unit is based on A-weighted sound exposure level (ASEL; $L_{AE}$). To make equal ASEL of outdoor noise, finite impulse response (FIR) filter is applied to the originally sampled source to include the effect of distance attenuation. The evaluation method of jury test adopted a Semantic Difference Method (SDM). In the result of the Jury test for impulsive noise, the annoyance response of blasting noise was higher than that of breaker noise.

• 월간 기계설비
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• s.118
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• pp.34-43
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• 2000

아현동 도시가스 폭발사고와 대구 지하철 공사장 가스폭발사고 등 잇따른 대형 도시가스사고로 인하여 보다 적극적이고 체계적인 가스안전관리의 필요성이 제기되어 1995년 8월 4일 시공감리 등의 제도가 법제화되었으며, 새로이 마련된 시공감리제도 등의 시행을 위하여 1996년 초부터 시공감리업무 수행지침서와 각종 지시$\cdot$지침이 작성되어 가스사고예방을 위한 안전관리에 활용되어 왔다. 이러한 법령의 정비 및 관련지침에 따른 철저한 안전관리와 도시가스사업자 안전의식 향상의 결과 1995년 264건에서 1999년 26건으로 도시가스로 인한 사고발생이 90$\%$ 이상 획기적으로 감소하였다. 그리고 전면적으로 법 개정이 이루어진 1995년 8월 4일 이후 수 차례에 걸쳐 법령 및 관계고시의 개정으로 보다 효율적인 안전관리체계를 정립하여 왔으며 이에 따라 시공감리업무 수행지침서와 각종 지침의 수정이 불가피하게 되었다. 따라서 한국가스안전공사에서는 개정된 법령 및 관련고시에 맞게 시공감리업무 수행지침$\cdot$전기방식 검사업무지침 및 특정가스사용시설 검사업무지침을 수정하였고, 시공감리업무 운영을 위한 각종 운영지침으로 통합$\cdot$개정하였으며, 세부적인 신축흡수조치 방법을 명시한 입상관의 신축흡수조치 지침을 제정하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2000.06a
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• pp.940-948
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• 2000

Noise and vibration generated at construction sites become serious issues because of bigger construction projects and growing use of heavy equipment. Especially in downtown construction, noise and vibration easily exceed the legal standards that can suffer the most of surrounding residents. The number of complaints by the residents who are exposed to the noise increases as their consciousness grows. However, the Korean regulations for the construction noise and vibration only present the overall limits for target areas and times zones, and this make it difficult to take effective measures. Also in rural area, disputes between construction sites and residents arise, but the dispute resolution or taking measures are difficult because clear standards concerning cause-and-effect, estimation of effective levels, calculation of damages, and future precautions and examples lack. This paper describes legal standards regarding the noise and vibration and presents judging standards for the physical damages. This paper also introduces example public complaints that happened at Daewoo construction sites to describe the problems in the existing law and further to enable smooth construction progresses by emphasizing the seriousness of public complaints.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.20 no.2
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• pp.191-198
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• 2010

The noise by the construction activities is one of the main issues in Korea. To prevent the noise from construction site, construction company installs temporary noise barriers along the construction site boundary. Normally sound insulation performance ($R_w$) of the temporary noise barriers made by metal or plastic is between 18 and 31 dB and metallic noise barriers are around 5 dB higher than plastic noise barriers. Sound absorption performance (NRC) of the temporary noise barriers are between 0.20 and 0.59 so it's difficult to characterize their acoustic performance. In this study, it has founded that sound insulation performance of the temporary noise barrier has been improved about 3dB by stick the high density acoustic sheet and insertion loss of noise barrier is getting increased as the source and receiver approached the temporary noise barriers.

• Journal of the korean veterinary medical association
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• v.47 no.9
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• pp.852-859
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• 2011

최근 우리 축산농가의 주변에서 발생하고 있는 각종 도로 및 우회도로 확장 및 신설, 석산의 채석장, 아파트, 골프장 건설현장 등에서 각종 건설기계의 사용으로 인한 발파, 절토 및 성토부 다짐 공사 등으로부터 나오는 소음 진동 먼지로 인한 가축피해에 따른 분쟁조정신청과 법원의 소송 건수가 부쩍 늘어가고 있는 추세이다. 아직도 가축을 사육하는 농장 주위에 이러한 소음 진동 먼지에 따른 피해를 보는 사례가 있음에도 불구하고, 가축사육농가들이 환경분쟁에 따른 관련 지식과 정보부족으로 인해 실질적인 피해보상근거가 되는 객관적인 자료와 근거제시에 어려움을 겪고 있는 실정에 처해 있다. 이에 필자는 직접 각종 법원소송 사건, 사실조회서 작성과 중앙과 각도 지방환경분쟁조정위원회로 부터 전문가로 위촉을 받아 현지조사를 해 오면서 피해보상에 따른 애로사항과 문제점들을 하나 하나 열거해나가면서 동물병원 개설 임상수의사들에게 구체적이고 실질적인 도움을 드리고 저 본고를 정리하였음을 밝혀두는 바이다.

• Journal of Korean Tunnelling and Underground Space Association
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• v.19 no.3
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• pp.489-501
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• 2017

The collapse accidents during a open ground excavation in urban areas not only lead to human injuries and material damages in the construction site, but also lead to road sinks and damages to the adjacent facilities due to settlement of ground around the construction site. Therefore, during a open ground excavation in the urban areas, it is necessary to thoroughly prepare for prevention of collapse accidents, and consider whole construction stage such as planning, design and construction. In this study, the priorities to be managed mainly were obtained in order to prevent collapse accidents during a open ground excavation. After analyzing results from past accidents cases for open ground excavations, priorities were evaluated regarding collapse-inducing elements using the Delphi technique which is a decision-making method by consensus among experts. As a result, insufficient groundwater treatment, bad geotechnical investigation and instability on construction, etc. were obtained as priorities for prevention of collapse accidents.

• Korean Journal of Construction Engineering and Management
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• v.9 no.5
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• pp.176-185
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• 2008

Recently, the construction wastes rapidly increase because of redevelopment, the development of new urbanization of large housing development, the expansion of social infrastructure. With increase of the construction noise, vibration, and dust caused by these developments, environmental conflicts and civil appeals increase. Moreover, the Government will reduce environmental level in the near future. Therefore, it will be expected to increase environmental conflicts and civil appels related to construction noise, vibration, and dust. To minimize environmental conflicts and civil appels, this study suggest the plan of prevention of environmental confliction and civil appeal by analyzing and measuring vibration, noise level, and dust of in-site crusher facilities at large and development district.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.18 no.7
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• pp.746-755
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• 2008

This research presents a laboratory study on subjective response of impulsive sound caused by construction site (breaker and blasting). The sources are sampled from outdoor noise and their levels range from 40 to 75 dBA at the interval of 5 dBA. The noise unit is based on A-weighted sound exposure level(ASEL; $L_{AE}$). To make equal ASEL of listening level, finite impulse response(FIR) filter is applied to the originally sampled source to include the effect of propagation attenuation. Sixty-three subjects, forty-two males and twenty-one female, between 18 and 29 years of age, participated in the experiment. The evaluation method of jury test adopted a semantic difference method(SDM). In the test results for impulsive noise, the subjective response of blasting noise was higher than that of breaker noise. The result of %HA that has been combined responses of the three methods except for pink-noise was executed by regression analysis and was shown as the following equation.: $%HA=746.53/(1+{\exp} (L_{AE}-93.3))+0.34$.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.10a
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• pp.163-165
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• 2018

Most construction disasters are analyzed to be human factors such as not complying with the safety regulations of construction sites, not using clothing and protective equipment, safety insensitivity, and the health of workers. In order to prevent such a construction disaster, the project site management needs to check the health of workers, but it is difficult to check the condition of workers every hour. Therefore, this paper proposed the design of digital safety-helmet that can automatically identify health conditions by checking workers $SpO_2$ and pulse rates, away from simple protective features.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.05a
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• pp.1157-1161
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• 2007

A construction noise is the main reason for people's petition among the pollution. The purpose of this study is to develop the noise prediction program to see the level of the noise on the construction site more accurately. For this purpose, the database of the power level on the various equipments was made. The noise reduction by distance and the noise reduction by diffraction of barrier were mainly considered and calculated. The simple noise prediction program will provide the information about proper height and length of the potable barrier which satisfies noise criteria of the construction sites from a construction planning stage. To investigate the reliability of this program, the predicted data was compared with the measured data. An average of difference between measured data and predicted data is 1.3 dB(A) and a coefficient of correlation is about 0.95.