The torque shear high strength bolt is clamped normally at the break of pin-tail specified. However, the clamping forces on slip critical connections do not often meet the required tension, as it considerably fluctuates due to torque coefficient dependent on lubricant affected temperature. In this study, the clamping tests of torque shear bolts were conducted independently at indoor conditions and at construction site conditions. During last six years, temperature of candidated site conditions was recorded from -11℃ to 34℃. The indoor temperature condition was ranged from -1 0℃ to 50℃ at each 10℃ interval. As for site conditions, the clamping force was reached in the range from 159 to 210 kN and the torque value was from 405 to 556 Nㆍm. The range of torque coefficient at indoor conditions was analyzed from 0.126 to 0.158 while tensions were indicated from 179 to 192 kN. The torque coefficient at site conditions was ranged from 0.118 to 0.152. Based on this test, the variable trends of torque coefficient, tension subjected temperature can be taken by statistic regressive analysis. The variable of torque coefficient under the indoor conditions is 0.13%/℃ while it reaches 2.73%/℃ at actual site conditions. When the indoor trends and site conditions is combined, the modified variable of torque coefficient can be expected as 0.2% /℃. and the modified variable of tension can be determined as 0.18%/℃.

본 연구는 건설현장 소장의 진성리더십이 현장직원의 조직시민행동, 종업원몰입에 미치는 영향과 이들 간의 관계에 있어서 조직후원인식의 매개역할을 살펴보았다. 본 연구의 조사대상자는 고속도로건설현장(37개), 인천공항건설현장(12개), 철도건설현장(10개), 광역지자체건설현장(14개), 국도건설현장(2개) 등 75개 건설현장에 근무하고 있는 현장직원을 대상으로 하였다. 회수된 설문지 630부 중에서 불성실한 응답자를 제외한 622부가 분석 자료로 활용되었다. 설문분석결과는 다음과 같다. 첫째, 현장소장의 진성리더십이 현장직원의 조직후원인식, 조직시민행동과 종업원몰입과 정(+)의 관계를 나타났다. 둘째, 현장직원의 조직후원인식이 조직시민행동과 종업원몰입과 정(+)의 관계를 나타났다. 셋째, 현장직원의 조직후원인식이 현장소장의 진성리더십과 현장직원의 조직시민행동, 종업원몰입 사이에서 부분매개 하는 것으로 나타났다. 이러한 결과는 현장소장의 진성리더십이 현장직원의 조직후원인식을 향상시키고 향상된 조직후원인식은 현장직원들의 조직시민행동, 종업원몰입에 영향을 발휘한다는 것을 알 수 있었다. 본 연구는 건설현장 내에서 절대적 권한을 갖고 있는 건설현장 소장의 진성리더십의 영향력을 평가하였다는 점과 매개변수로써 조직후원인식의 역할을 검증하였다는 점에서 의의가 있다.

Total industrial accident rate in Korea is facing a record 0.7% for 10 years since 2000. After entering the continuous versus 0.6% (0.69%) in 2010. In 2011, the decrease was reduced to 0.65%. Conversely In contrast to foreign workers' share has increased dramatically over 10 years since 2000 to 2010 are expected to be difficult in the accident rate of 0.5% for the entry. Despite the ongoing disaster reduction efforts to reduce disaster (share) of foreign workers has been increasing rapidly Survey, Whilst the provision of disaster prevention system status and problem analysis and identify measures that can be established through such disaster reduction measures are urgently needed.

산업현장의 개인보호구 사용 제도는 실질적으로 비현실적인 상태에 놓여있는 실정 이다. 대한민국 정부와 사업주는 보호구 사용 제도의 실태에 관하여 실질적인 개정 작 업에 박찰을 가할 시기가 도래하였으며, 지금부터 제도에 대한 개혁을 시도하여야 한 다. 선진국에 비교한다면 너무나 늦은 그저 “늑장대처”일 뿐이라 이야기 하고 싶다. 그 러나 정부와 사업주, 그리고 안전분야 전문가들이 모여 선진국의 안전문화를 수렴하고 우리가 직면한 과제 해결을 위해 적극적으로 다가간다면 대한민국의 산업재해율 감소 와 개인보호구 사용 제도의 개정은 분명 달성할 수 있는 목표라 본다. 이에 따른 이번 연구의 목적 및 방향은 다음과 같다. 급변하는 글로벌 산업안전보건환경에 부응하기 위하여 정부는 적극적으로 선진국의 안전문화 수렴에 동참하여야 하며, 개인보호구 사용의 현 제도를 철폐해야 한다. “산업 안전보건법”에서는 사업주가 근로자에게 보호구 지급하는 것을 의무로 하고 있지만, 이와 반대로 근로자 스스로가 보호구를 지급하는 방안을 마련해야 한다. 그리고 정부 나 사업주는 이 행위에 대하여 근로자에게 적절한 보상안을 마련해주어야 할 것이다. 현재 대기업이나 중견기업은 개인보호구가 남아도는 실정이며, 과도한 안전관리비 책 정으로 인하여 국가적으로 큰 손실을 초래하고 있다고 볼 수 있다. 이는 고용노동부가 추진하는 “건설업 산업안전관리비 계상 및 사용기준”의 오류를 명확히 인식하게 하고 개정을 시도해야 한다. 정부의 법과 제도들은 주로 대기업과 중견기업 등에 맞춰져 있 는 실정이고 나머지 소규모 영세사업장에는 법과 제도의 효력이 미치지 못하는 것이 안타까운 현실이다. 소규모 사업장의 근로자들도 기지개를 펴고 당당하게 일할 수 있 는 법과 제도를 마련하는 것이 풀어야 할 숙제이다.

According to the statistics of occupational injuries in 2013, the work platforms were main objects causing fall injuries in construction sites. But many scaffold and platform workers use and install the work platforms and the fixed and mobile scaffolding without considering about safety and health standards. We had done a nationwide survey about how the platform workers obey safety and health standards. As the result of this survey, in order to ensure the safety of the work platforms, we founded that the platform workers must obey the safety and health standards when using and installing the work platforms. To improve the safety and health conscious of the workers, it needs to educate a worker on safety and health standards for work platforms. Also, to effectively prevent constructin injuries for the work platforms, it is rextricted for workers to use only safety certified work platforms. And, before installing and using work platforms, it needs to make a work plan for work platforms and obey it.

Share of total accidents in construction accidents construction site accident 70% of small embroidery Reducing the rate of Construction of the entire construction accidents decreased overall is a very meaningful work. Disaster reduction continues to increase despite the efforts of a small construction site(Amount less than 2,000,000,000) for Disaster Reduction In order to identify more clearly the cause of the system and provide the urgently needed measures.

While Korea had achieved radical growth of construction industry, it also had accumulated problems in material, human and economical loss due to its low quality of safety level. Therefore, not only enterprises but also the nation is putting in a great deal of efforts for construction safety. However, its effect is not satisfiable. This research aims for change of construction cite by introduction of professional Safety Patrol Management System(SPMS) and consideration of its necessity. To consideration of its necessity, we compared and anaylzed average numbers of indicated dangers and safety accident incidences in each construction cites and we researched changes in worker's safety sense. It will establish the suitable design standards and suggest the basic database for estimating disaster and accident ratio.

Condition of Construction Safety Training and its Vitalization in Chungbuk Area. The industrial accident rate of Korea has been declining each year but this does not necessarily mean that the safety consciousness of people has been strengthened. 94.3% of the overall industrial accidents occur in small/medium sized business (299 employees or less) and 97.5% of the accidents are in construction business. In Chungbuk area, small/medium sized business take up 99% of overall business and among them, 30% are construction business. Therefore, in order to resolve the safety issues, survey and research have been conducted with construction workers and manager and identified the causes and possible solution for improvement as following. First, most of the site workers and managers view safety training and equipment unnecessary as the work site is small in size. Second, the current safety trainings are being done with case study and visual teaching materials but the quality of the material, environment and instructors are very low and outdated. The quality of study materials and instructor need to be improved with professionalism. Third, 57% of surveyees think that the contents of training materials do not reflect the real situations and hazards at the work site and are not even in line with legal requirements. The safety trainings are being given perfunctorily. With on above researched issues, new method for vitalization of safety trainings and reducing and preventing the industrial accidents constructional site in Chungbuk area are to be suggested.

Construction victims have increased year by year. Disaster proportion is also increasing continuously. Looking over the causes of disasters by each type of work, fall from working platform indicate the highest rate above all so that it is urgently required to set up safety measures. This study is to grasp the present status of construction accidents, to identify areal characteristics of the top 20% accidents on the basis of working platforms with the highest accident rate, to grasp the causes of accidents after their analyses, and to present methods to reduce casualties related to working platforms. As measures to reduce construction disasters, this study proposes to improve safety management and training on working platforms, to complement safety regulations, and to better performance including the development and expansion of certified products suitable for safety regulations.

There has been an increase in fire/explosion accidents caused by chemical substances used in new small/medium sized construction, reconstruction, or extension sites. There is vast room for improvement, especially in safety training, safety inspection, and selection of countermeasures because training, technicality, and management systems regarding fire·explosion risks in small/medium sized construction sites are very immature in most cases. The purpose of this study is to propose a differentiated technical, educational, and management application plan for preventative management of fire·explosion accidents caused by chemical substances used in small/medium sized construction sites.

During five years (Year 2009~2013), Total victims of 72 %( 81,560 people) and those 50.6 %( 1,258 people) of death accident occurs in small scale construction site which operate 2 million USD less construction budget. Especially, falling death accident account for 785 people, in the share of 33.2 %( 261 people) death disaster takes due to defect of original cause materials. The major safety issues in small scale work place take place while scaffold installation, disassembling, work-plate improper installation or non-professional skills of workers. Furthermore, labor subcontract systems make small construction site shortage of resources. Those workers regard work-plate as unnecessary and consumables supplies. Because of that most of workers use unsafe workplace in most construction site. Therefore, in order to prevent falling accident occurring in small scale work site, government should organize related regulations such as “Work site safety construction method” and then expands education support, financial aid, and sourcing safety supplies for work plate which offer broad variety experiences. Also, introduce certificate solutions for various work plates to improve safety function such as anchoring type method and anti sliding function.

The disaster and safety accidents in any construction site occur inevitably. Since the on-site disaster and accident occurrence became one of major concerning factors in construction site, architects & building executers have been flooded with safety management advices. The purpose of this paper is to survey and analyze the effect of the application of Safety Patrol Management System(SPMS) upon the reduction of disaster & accident occurrences in construction site. In order to estimate and reduce the disaster and accident ratio in construction site, various surveyed data has been analysed. It will establish the suitable design standards and suggest the basic database for estimating disaster and accident ratio.

6 sigma is a management innovation strategy which improves most of all managerial processes including transactional and project based operations such as marketing, purchasing, accounting, and construction. Even though 6 sigma is trying to solve problems from the customer’s viewpoint in the scientific manner, project leader feels some difficulties in implementation because of several reasons. Especially the difficulties are prevalent in construction site. This paper investigates the cause of the difficulties through questionnaires, analyzes the investigation results, and verifies the critical success factors of 6 sigma implementation. Factor analysis has been usually employed in reducing quantity of data and summarizing information chaos. In this study, several variables from questionnaires are grouped into just only four factors by the process of factor analysis. The critical success factors are extracted as project management system, implementation mechanism, site condition, and project ownership. Some ideas for each individual success factor are suggested, which are expected to be useful in successful implementation of 6 Sigma in construction site.

This study compared the disasters in construction field under construction amount of 300,000,000 won and the whole construction fields in order to improve the efficacy of various industrial safety and health policies and services and examined the characteristics of disasters in construction field under 300,000,000 won. It also examined, compared and analyzed the characteristics of disaster in construction field under construction amount of 300,000,000 won that disaster prevention technical experts saw. The subjects of comparison were selected with statistical data of disaster for 2011 and those of disaster in construction field under construction amount of 300,000,000 won from January to August of 2012. And questionnaire was conducted with technical instruction experts of small-sized construction field and priority was drawn, compared and analyzed with AHP. Consequently, the results of different views between actual disaster data and experts' views were obtained. Therefore, this study suggested the characteristics of disaster in construction field under construction amount of 300,000,000 won and presented the methods for improving disaster prevention technical experts.