• International Journal of Safety
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• 제4권1호
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• pp.23-26
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• 2005

In spite of the rapid economic growth in Korea, safety cultures in construction industry have not much improved during last ten years. When it is compared to other developed countries of safety, accident rate of Korean construction sites shows bleak figures. This study compares the safety figures of Korea with the UK figures in order to find out what is needed for the safety of the construction sites in Korea. By comparing occupations, age groups, kind of accident, and agent, this study found several differences and similarities, and derived the directions for better safety management.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.30-31
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• 2009

Early detection of schedule delay in field construction activities is vital to project management. It provides the opportunity to initiate remedial actions and increases the chance of controlling such overruns or minimizing their impacts. This entails project managers to design, implement, and maintain a systematic approach for progress monitoring to promptly identify, process and communicate discrepancies between actual and as-planned performances as early as possible. Despite importance, systematic implementation of progress monitoring is challenging: (1) Current progress monitoring is time-consuming as it needs extensive as-planned and as-built data collection; (2) The excessive amount of work required to be performed may cause human-errors and reduce the quality of manually collected data and since only an approximate visual inspection is usually performed, makes the collected data subjective; (3) Existing methods of progress monitoring are also non-systematic and may also create a time-lag between the time progress is reported and the time progress is actually accomplished; (4) Progress reports are visually complex, and do not reflect spatial aspects of construction; and (5) Current reporting methods increase the time required to describe and explain progress in coordination meetings and in turn could delay the decision making process. In summary, with current methods, it may be not be easy to understand the progress situation clearly and quickly. To overcome such inefficiencies, this research focuses on exploring application of unsorted daily progress photograph logs - available on any construction site - as well as IFC-based 4D models for progress monitoring. Our approach is based on computing, from the images themselves, the photographer's locations and orientations, along with a sparse 3D geometric representation of the as-built scene using daily progress photographs and superimposition of the reconstructed scene over the as-planned 4D model. Within such an environment, progress photographs are registered in the virtual as-planned environment, allowing a large unstructured collection of daily construction images to be interactively explored. In addition, sparse reconstructed scenes superimposed over 4D models allow site images to be geo-registered with the as-planned components and consequently, a location-based image processing technique to be implemented and progress data to be extracted automatically. The result of progress comparison study between as-planned and as-built performances can subsequently be visualized in the D4AR - 4D Augmented Reality - environment using a traffic light metaphor. In such an environment, project participants would be able to: 1) use the 4D as-planned model as a baseline for progress monitoring, compare it to daily construction photographs and study workspace logistics; 2) interactively and remotely explore registered construction photographs in a 3D environment; 3) analyze registered images and quantify as-built progress; 4) measure discrepancies between as-planned and as-built performances; and 5) visually represent progress discrepancies through superimposition of 4D as-planned models over progress photographs, make control decisions and effectively communicate those with project participants. We present our preliminary results on two ongoing construction projects and discuss implementation, perceived benefits and future potential enhancement of this new technology in construction, in all fronts of automatic data collection, processing and communication.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.232-233
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• 2019

The plater work in the standard of estimate presents a variety of construction types. However, there is a part that does not fit the change of specification standards and on-site construction status, and it was revised in 2019's standard of estimate. In this study, we analyzed in detail the factors affecting the changes in estimating standards in the plater work. There were changes in the specification standards previously presented as primary coat, secondary coat, and formal coat as well as changes in on-site construction status such as thickness according to the number of plastering. Therefore, it is analyzed that the estimating standards can be classified by the number of finishes according to the site conditions by reflecting the analysis of the specification standards and site application status, and suggesting the finishing standards according to the number of plastering.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1522-1527
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• 2009

Construction project is necessary element for human life to upgrade the quality and convenience. However, due to its contradictory nature to the environment conservation, environmental pollution and damage, deterioration of natural scenery, noise/vibration, water quality pollution, etc. caused in the process of construction greatly affect the environment. The purpose of this study is to propose checklist for environment management can be used in construction phase. For this, we went ahead with the research by studying the existing research related to environment-friendly construction project management both at home and abroad, investigation and analysis of environment-related laws and ordinances, and drawing the checklists for natural environment and living environment at the construction phase. As a result, we were able to compile a checklist for nine items including geological features, animals and plants, use of soil, quality of air, water, and soil, construction wastes, noise, vibration, recreation, and sceneries. The checklist is structured in 4 grades and coded so as to allow it to be developed with the use of computer system in future. We hope that the checklist presented in this study will help lead the managers at the construction phase in construction development sustainable from the perspective of environmental conservation.

• Architectural research
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• 제21권2호
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• pp.41-48
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• 2019

The purpose of this study is to research and development of 'Korea B(Benefit)-impact Model' for Sustainable Development. A concept evaluation model is 'B(Benefit)-impact model' in U.S.A. We use the results of surveys that examined the importance of social value issues to stakeholders in Korea to implement the benefit-impact model in Korea. In particular, in this paper, we use the KSI(Korean Sustainability Index) survey data conducted by the Korea Standards Association to evaluate the social value of the construction industry for representative stakeholders in the construction industry. The social value pool and the activity indicator pool used for the survey are created based on relevant International Standards; ISO 26000, ISO 14001, ISO 37001. As a result, Korea B-impact model for construction industry included the following five core social value issues; Strengthen transparency of corporate management, Ensure fair employment and employment relations, Efforts to prevent corruption, Conduct fair competition, Efforts to prevent environmental pollution. In addition, the US B-impact model has three limitations. First, it is unclear whether the key indicators have been derived while considering all issues of social value. Second, US B-impact model indicators are developed by the social responsibility experts, so it is necessary to review by stakeholders in each industry. Finally, it would be more effective for companies to use the B-impact model index as a more detailed activity indicator. When developing a Korea B-impact model, the following methods are used to supplement it. First, we reviewed all social value issues using international standards. Secondly, we used the KSI(Korean Sustainability index) survey results to derive the importance of the social value issue of construction industry in Korea. Finally, we have clearly matched the activity indicators by social value core issues based on the GRI Standard so that companies can actually use the Korea B-impact model for the construction sector. The detailed development stages and results of this study are as follows;.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.596-599
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• 2004

최근 정보기술(IT)의 발전에 힘입어 안전관리 정보를 통합하여 그 활용의 정도를 극대화하려는 노력이 대형 종합 건설회사를 중심으로 여러 방면에서 이루어지고 있으며 이에 건설업계는 안전관리 정보를 통합 관리하는 시스템의 구축에 많은 관심과 노력을 기울이고 있다. 몇몇 앞서가는 업체들은 시스템의 구축을 완료하여 현장에 적용시키는 단계에 있으나 이는 몇몇 대형 종합 건설업체에만 국한되어 있다고 볼 수 있다. 하지만 계속적으로 재해율은 유지되고 있는 상태이므로 근원적인 문제해결이 필요한 상태이다 즉 이런 관리 시스템이 건설현장의 안전관리에 미치는 영향보다 근원적인 근로자의 안전활동을 관리하는 것이 급선무이다. 따라서 본 연구는 안전관리 정보 시스템의 개발 및 도입을 위한 평가모델을 구축하는데 필요한 기초자료를 제공하기 위해 대형 종합 건설회사들의 안전관리 정보시스템의 기능별 특징 및 제반 사항을 살펴보고 결과중심의 문제점을 지적한 후 대안점을 제시하였다.

• 한국건설관리학회논문집
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• 제11권1호
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• pp.16-28
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• 2010

건설 산업은 다양한 프로젝트를 수행하는 수주중심의 산업적 특성상 정형화된 프로세스로 구축하여 운영하는 것이 매우 어렵다. 이에 건설기업의 동적인 업무 변화 특성 수용과 업무개선을 동시에 만족시킬 수 있는 BPM(Business Process Management)의 도입이 대형 건설업체를 중심으로 이루어지고 있는 상황이다. BPM의 특성과 기업의 고유 전략이 상이하기 때문에 일괄적인 적용은 어렵다. 이에 건설 산업의 특성과 프로세스를 이해하고 기업이 추구하는 비전과 목표에 부합하는 업무 프로세스를 우선 선정하여 적용하는 것이 필요하다. 본 연구에서는 기존 연구 고찰을 통하여 BPM 우선 적용 대상 프로세스 선정방안의 필요성을 제시하고, 건설기업 업무 프로세스 분석을 통해서 건설기업의 BPA를 구축하였다. 국내 건설기업의 전략목표 우선순위 파악을 통하여 높은 우선순위를 가지는 것으로 도출된 수익성과 성장성의 관점에서 핵심 업무 프로세스를 도출하였다. 또한 BPM 적용대상 프로세스 평가 기준을 6가지로 제시하여 이를 바탕으로 핵심 업무 프로세스를 평가하여 BPM 우선 적용 대상 프로세스를 도출하였다.

• 한국건축시공학회지
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• 제9권6호
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• pp.183-188
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• 2009

화성은 조선 정조 때 건설되었는데, 화성의 건설과 관련된 정보들이 화성성역의궤에 상세히 기록되어 있다. 그러므로 화성성역의궤에 담긴 건설관련 정보들을 건설관리 요소별로 구체적으로 비교분석할 필요성이 제기되었다. 따라서 본 논문의 목적은 화성성역의궤에 기록된 주요자재의 조달관련 정보들을 비교.검토함으로써, 화성성역을 현대 건설관리적 개념으로 분석하는 것이다. 이를 위하여 목재, 철물, 기와를 대상으로 공급지역, 공급방법, 종류 및 가격 등을 분석하였다. 분석결과, 화성성역에서는 주요자재를 조달함에 있어서, 관급과 민간매입이 병행되었다. 특히 봉산에서 공급 가능한 목재를 제외하고는 민간으로부터의 조달에 크게 의존하였다. 또 민간으로부터의 자재를 구매하는 것이 비싸지 않았으며, 강철의 경우에는 황해도 등의 지방에서 직접 구입하는 것 보다 30% 저렴하였다. 마지막으로 기와와 같이 손상되기 쉬운 자재는 원거리에서 운반해 오는 것 보다는 현장 인근에 생산시설을 구비하여 직접 생산하고 현장에서 소비하였다. 이를 통하여 자재의 종류와 특성에 따라 현장제작과 외부조달을 병행하는 유연성을 가지고 자재의 조달관리를 수행하였음을 알 수 있다. 이와같은 분석결과들은 화성성역의 공사관리 요소를 파악하는 데에 핵심적인 자료가 될 것으로 기대된다.

• 인간식물환경학회지
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• 제23권3호
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• pp.347-362
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• 2020

Background and objective: It is difficult to conclusively determine the exact cause of tree defects since multiple causes are involved such as climate change, plantation, tree quality and planting time, construction, planting base, drainage, sunshine conditions, maintenance, and microclimate. The data related to landscaping construction defects are scattered or fragmented by companies and years, but not managed systematically by the defect information management system. Most of the earlier studies associated with tree defects in apartment complexes suggested defect rates after examining tree defects in the completed construction site and proposed fragmentary and subjective conclusions about the causes of defects observed in trees with high defect rates. It is proposed to continue to conduct studies on the establishment and analysis of systematic databases to identify the exact causes of tree defects and measures to improve, and the need to accumulate systematic data in the construction process where many defects arises. This study was conducted to reduce the defects of trees planted in apartment complexes. Methods: Main factors related to tree defects were subdivided based on the results of literature review and a defect investigation at the completion site, and tree history management items were selected and subdivided during the construction stage. Results: The criteria for the preparation of subdivided items were obtained, and the tree history management checklist was written for the site under actual construction and a systematic database was established. Items that are categorized based to the causes of defects include the location of nurseries, date, tree quality, site conditions, planting techniques, microclimates, and maintenance. Conclusion: This study suggested tree history management items based on the tree defects that can be identified at the construction stage and applied them to the selected study site, which differentiates this study from earlier studies. It will be necessary to conduct a comprehensive and objective time series analysis on tree defects that occur over time by continuously monitoring and collecting data after construction.

• 한국건설관리학회논문집
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• 제21권6호
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• pp.16-26
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• 2020

도로포장 유지보수 공사는 다양한 현장 여건에 의해 작업량이 다양하게 발생되고 있으나, 공사비 예정가격 작성시 세분화된 기준이 없어 적정공사비가 산정되기 어렵다. 도로포장 유지보수는 신설포장과 달리 차량들이 운행하고 있는 상황에서 시공을 할 수 밖에 없어, 도심지, 작업제한시간, 야간, 시공면적 등에 따라 생산성에 많은 차이를 보이고 있다. 이를 보정하기 위해 공사비산정기준 등에서는 차로수, 주택가, 작업가능시간, 야간작업 등의 할증을 제시하고 있으나, 공사관계자들에 따라 상이하게 적용이 되고 있는 실정이다. 본 연구에서는 도로포장 유지보수 주요 작업공종에 대하여 현장의 여건을 제대로 반영 할 수 있는 공사비산정 기준을 마련하고 적용할 수 있는 방안을 조사하였다. 주로 많이 시공되고 있는 '절삭 후 아스팔트 덧씌우기', '표층복구', '포장복구', '도로복구'를 대상으로 현장을 조사·분석 하였으며, 현장조사 결과를 바탕으로 기본적인 번화가, 주택가 등 할증을 포함하여 작업시간과 시공개소 및 면적에 따라 시공량을 구분하여 적용할 수 있는 기준을 제시하였다. 작업시간은 이동과 준비시간을 제외한 순수작업시간을 3개 type(7시간, 5시간, 3시간)으로 구분하여, 각 type에 따라 시공개소의 면적을 5가지로 구분할 수 있는 계수를 마련하였으며, 공사비를 비교·분석 하였다. 이에 따라 시공목적, 현장여건에 따른 공사비산정기준 설계방법을 제시하여 설계자가 현장여건을 고려하여 적정한 공사비를 산정할 수 있는 방안이 마련된 것으로 판단된다.