As the 3D laser scanning technology capable of databaseing large sewage box culverts becomes possible, it is necessary to develop a standardization manual that can clearly distinguish the structural and operational defect types of box culver and analyze the defect data. In this study, we collected and analyzed defects in sewage box culverts of 14,827m in total by selecting three districts in Korea. The major defects were surface damages, and their defect densities were 2.17 m2/m, 0.27 m2/m and 0.10 m2/m for aggregate exposure, Steel reinforcement exposure, and Steel reinforcement projecting. In order to support the decision of the box culverment management, it was divided into five grades and each defect code and defect score were allocated. The results of this study are useful for the diagnosis of the sewage box culverts in Korea and it is expected to support a decision making for management.

The recent domestic construction market is in a difficult situation due to reduction of the government's SOC budget and new orders from public-sector, and the deterioration of housing supply situation in the private sector etc. In addition, the number of disasters in the construction industry has increased in recent years with 26,570 people (up 5.7% from the previous year) in 2016, unlike other industries that are in a declining trend. As such, the construction industry has unique characteristics and problems such as high industrial accidents rate, abnormal subcontracting structure, excessive working hours and work intensity. As a result, the construction workers have a lot of job stresses. Job stress has been recognized as one of the major causes of industrial accidents and many researches have been conducted on that. However, most of the researches were about the factors that induce job stress and how these factors affect disaster occurrence, job satisfaction, job performance, turnover intentions, and job exhaustion. The purpose of this study is to investigate the effect of positive psychological capital on job stress, which is emerging as a new human resources development paradigm useful in corporate management in order to find ways to reduce job stress. To do this, 347 data collected from construction workers in Daejeon, Sejong, and Chungcheong provinces were analyzed using statistical package(IBM SPSS 22) for basic statistical analysis, reliability analysis, and regression analysis. As a result, positive psychological capital has shown an alleviate effect on job stress. In particular, the higher the optimism, hope, and resiliency of positive psychological capital, the lower the job stress. However, the higher the self - efficacy, the higher the job stress.

This study is for figuring out major components of construction quality infrastructure and suggesting improvement plan by benchmarking global best practice model and analyzing gap between the model and sample practice. Based on improvement plan, researcher could derive major characters and components of construction quality infrastructure, and also about the priority among core competency components of construction quality experts. The result showed that the 'human resource' was ranked the best priority followed by 'method' 'environment', 'equipment' among major characters and components of construction quality infrastructure. Also, for core competency components of construction quality experts, 'number of years in work places' was the best priority, and the 'professional knowledge on engineering' was another priority ranked. Far from general perception on competency components, 'academic education' ranked the last. It may allude that the current education system in this country is not effective in developing competency of quality engineers. In summary, this study shows professionalism of quality engineer is the most important thing in all the components.

This researcher selected basic variable to investigate the effective relations of establishment and management of resting facility on reduction of constructional disasters and safety accidents and improvement of working efficiency for construction workers. Based on the measured variables, this researcher investigated phenomenon, recognition and satisfaction for using and demanding resting facility by long-term construction in construction site for workers of huge construction site in Seoul, conducted survey of total 219 questionnaires so as to grasp implications of workers' resting facility demanded in long-term huge construction site and effects on reduction of disasters and conducted structural equation analysis. As a result, resting faciity factor, management factor, and hygienic service factor were significant and resting and food factors were not significant. Therefore, it's expected to reduce personal disaster by improving quality of constructional resting facility, hygienic service, and resting facility management and especially, resting facility management factor makes lots of effects on prevention of personal disasters, so it was a strongly main factor. By suggesting the guideline of establishment and management service of proper resting facility through this research, positive recognition and constructional disaster reduction can be expected in construction site.

The purpose of this study is to provide basic data to help ensure the safety and enhance industrial competitiveness of plant construction projects by analyzing the safety management status of, mainly, chemical engineering plant construction projects, and proposing specific measures and models to reduce human/educational, technical/systemic, institutional disasters. This study was done using literature research and case study/empirical study methods. The results of this study are summarized as follows. First, we classified the major disasters from the quarterly released ‘major diaster cases in construction business’from Korea Occupational Safety and Health Agency according to the type of construction and presented the causes and prevention measures.

This thesis provides background information on DFS carried out by the government in an effort to reduce the accident rate, cases of DFS in other advanced countries to study their risk detection, risk assessment, risk control measures, and cases in which application of DFS during the designing phase succesfully led to reduction of the accident rate. Till now, the focus has been on incident responses after the occurance of accidents, it describes the importance of considering safety during the desining process through safety results and cases.

Abstract It has come to attention that a risk-assessing organization, that will benchmark a company’s safety department, is imperative, following an increase in large-scale SOC-business project, construction of higher-raised buildings, development of underground space; all that have increase accident rates. Having faced problems that arise in firms that demand diversity, complexity and instantaneity, the purpose of the thesis is to arrive at efficient and practical problem-solving means. In order to solve the problems that would surface theoretically during an actual risk assessment, the state of the operation systems of the top five national construction firms having a hazard rate of 0.25 times less than the average rate have been analyzed, while a hierarchal recognition research of the employees who not only function at the operating level but are the practice subjects of a firm, has also been conducted, bringing the main text.

This study attempted to establish fire risk factors and preventive measures for each of five major types of construction, focusing on construction sites. For this purpose, disaster cases were analyzed and countermeasures were prepared. In addition, fire risk factors and flammable and combustible materials by construction type according to construction process were identified and preventive measures thereof were suggested. The results of this study can be used to establish policy improvement directions that meet various educational needs and expectations by identifying the use status of flammable and combustible materials and figuring out the fire risk factors according to the process by work type in construction sites.

Fishing dredge in Jeollabuk-do began to become widespread in the 1960s and has continued to catch diverse kinds of shellfish in the productive fishing grounds around Dongjin River, Mangyeong River and Geum River estuaries. Since the 1970s, the construction of various large-scale industrial complex and the implementation of Saemangeum reclamation project have resulted in a decrease in main fishing areas and a sharp decline in shellfish production. As a result, dredge fishery has faced many difficulties. Dredge fishery in Jeollabuk-do is carried out with a total of 30 fishing permits as of 2016. Surf clams, hen clams, bladder moon snails, and common orient clams were mainly caught before the construction of Saemangeum dike while comb pen shells, purple whelks and ark shells are mainly caught afterwards. Inside the Saemangeum dike, most fish species have disappeared due to low water level and low salinity, and littleneck clams are caught using a jet pump type of fishing dredge. Outside the dike, the diversity of shellfish species has been reduced; comb pen shells are mainly caught. In this process, a lot of friction occurs due to the use of a reformatted dredge. Therefore, a lot of research needs to be conducted in the near future.

It is a system that supports efficient sharing of information by real-time communication through application and web-based collaborative work space. IOT / ICT technology into the construction site to manage the entire process in real time. It is possible to predict and prevent accidents by using real time accumulated big data information, and it is necessary to diversify research using data.

건설현장에서 주로 사용하는 주요 가설기자재 규격에 대한 표준을 정하고 성능에 대한 신뢰를 확보하기 위하여 1992년 처음 도입된 가설기자재 성능검정제도는 2009년 안전인증제도로 변경되어 산업안전보건법 제34조(안전인증) 및 제35조(자율안전확인의 신고)에 근거하여 가설기자재 제조업체의 기술능력과 생산체계, 제품의 성능을 종합적으로 심사하고 안전인증기준에 적합 여부를 검증하여 안전인증표시(마크)를 사용할 수 있도록 하는 제도이다. 성능검정제도는 가설기자재 30종에 대해 제품의 성능만을 시험하여 합격증을 교부하였으나 2009년 1월 1일부터 의무안전인증 가설기자재 12종 33품목과 자율안전확인 신고 가설기자재 8종에 대해서 기술능력 및 생산체계와 제품의 성능을 심사하여 인증서를 교부하는 것으로 변경되었다. 가설기자재의 안전성 및 제품의 신뢰도 향상으로 건설공사 품질 및 안전이 확보됨에도 불구하고 일시적이며 부수적으로 사용되는 자재인 것으로 여겨져 가설기자재의 안전성 확보를 위한 관심과 노력은 매우 미흡하였다. 가설기자재에 대한 관심이 소홀한 가운데 안전성 여부를 확인하기 어려운 재사용가설재가 폭 넓게 사용되고 가설기자재의 가격경쟁이 심화됨에 따라 저가의 재료를 사용한 불법 가설기자재를 생산․유통하는 등 가설기자재 제도 전반에 불법적인 행위가 빈번히 이루어지고 있어 가설기자재 관련 제도와 제품에 대한 안전성과 신뢰의 문제가 다시 제기되고, 향후 가설기자재의 신소재(강화플라스틱 등) 및 신제품(접이식 틀비계 등) 등이 도입될 경우 현행 기준으로는 안전인증 또는 자율안전 확인을 받기 어려우므로 빠르게 진행되는 건설환경 변화에 적절하게 대응하지 못한다는 문제점 또한 제기되고 있다. 가설기자재 관련 문제점들과 제반 현황이 가설기자재를 제조하고 유통하고 사용하는 이해당사자간 신뢰를 잃고 있어 이해당사자간에도 제도 개선을 통한 가설기자재 시장의 정화와 개선이 필요하다는 공감대가 형성되고 있다. 따라서 정부는 가설기자재 관련 문제점을 종합적으로 검토하고 개선하기 위하여 다양한 방향으로 제도개선을 추진하고 있으며, 이와 같은 추진 대책의 일환으로 가설기자재 인증표시 기준에 관한 개선방안 마련을 위하여 가설기자재 생산․유통 및 사용 실태를 파악하고 가설기자재 관련 이해당사자 및 전문가의 의견 수렴 등을 통하여 가설기자재 인증표시 기준을 합리적으로 개선하고 효율적으로 관리하기 위한 연구가 필요하게 되었다. 본 연구를 통해 국내 건설산업에서 중요한 역할을 분담하고 있는 가설기자재의 안전성 향상과 신뢰성 회복을 위한 합리적인 개선방안을 도출하여 산업안전보건법령의 제‧개정에 반영할 필요가 있다.

The construction industry has the characteristics of a rapid change in the working environment compared to the general industry, and there will be a high risk of accidents in the process of accommodating workers in these working environments.Also, the severity of the accident is higher if the accident occurs in the event of a significant and hazardous operation than other industries.Safety and safety management of the workplace is the Occupational Safety and Health Act of the Ministry of Business and Safety.

The domestic construction market is in a difficult situation due to the recent decline in government SOC budgets, sluggish new orders from large public corporations, and deteriorating housing supply conditions in the private sector. In addition, construction workers compared to other industries have higher levels of job stress due to higher non-regular workers, unstable and irregular working hours, high work intensity, and poor work environment. According to previous research results, high job stress of construction workers has a great impact on the occurrence of disasters, and it is urgently needed to improve the job stress. The purpose of this study is to investigate the effect of Positive Psychological Capital such as positive self - efficacy, optimism, hope and resilience on job stress. Based on the results of this study, we suggest a plan to reduce job stress of construction industry workers.

Assessment of noise exposed population is to check the environment noise level and social influence in order to reduce the risks such as annoyance and disturbance that are generated by environmental noise. Also, this method suggests the preferential noise abatement policy and action plan by accurately finding the area that the noise causes harmful effect to human health. Recently, a noise map, which can predict noise in comprehensive area, is used for the assessment of noise exposed population, breaking from the methods using existing measures. In particular, countermeasure for noise can be considered more effectively by using assessment methods of noise exposed population for specific noise level, area, and building types which are the main input factors in noise maps. In this study, we propose noise reduction ranking decision at ship construction and repair process due to noise map.