• 한국건설관리학회논문집
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• 제20권2호
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• pp.37-43
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• 2019

주당 최장 법정 근로시간을 단축하는 내용의 '근로기준법 개정안'이 통과됨에 따라 근로시간 단축에 따른 근로자 소득감소, 공사기간 연장, 공사비 증가 등 다양한 문제가 발생하고 있다. 특히 다른 산업과 비교할 때, 생산성을 중시하는 건설 프로젝트의 경우 공종에 따라 주 52시간 근무제에 따른 영향의 정도가 더 클 것으로 예상되나 이에 대한 연구는 미흡한편이다. 이에 본 연구에서는 NATM 터널 공사를 대상으로 표준품셈 기반의 표준공정과 굴착 사이클 타임 그리고 공종별 단위 공기를 제시하고, 이를 통해 주 52시간 근무 적용에 따른 실제 작업조의 변화와 이에 따른 표준 공기 및 공사비의 영향을 분석하였다. 분석결과 굴착 공기와 총 공기는 각각 20%, 8.9% 증가하였으나, 굴착공사비와 총 공사비는 오히려 각각 1.2%, 0.5% 감소하는 것으로 확인되었다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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• pp.749-754
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• 1997

Nowadays domestic building market has undergone several changes. Labor costs are too high and materials are in short supply. These raised building costs and therefore lowered productivity. At this point it is the best way to reduce manual labor and find alternative materials that can improve productivity. In the building process form work take the most part of it. So many formwork systems were developed to reduce the construction period and labor cost. But their technical improvements just limited to adjust form shape-the role of form is not changed. This research developed a new formwork systems that can function to unify or minimze the unit process with cast-in-place type permanent form. In former study (reported in '97 spring seminar), we did the assembling test with column and beam clamps. Furthermore, In this paper, we examined the total systems of form erections and evaluated the structural performances.

• 한국건설관리학회논문집
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• 제23권6호
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• pp.54-64
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• 2022

국내 건설산업의 지속적인 노령화 및 인력부족 문제는 노동집약적 건설업의 특성과 지속되는 청년층의 건설업계를 향한 부정적 이미지가 증가하는 현실을 감안할 때 더 이상 미래의 문제가 아니라 국내 건설업의 생존을 위해 꼭 해결해야할 선결과제임에 틀림없다. 본 연구는 국내 건설산업이 직면한 건설 인력부족의 근원적인 문제점을 조명하고 인력부족문제를 해결하기 위해 최근 5년간 패스트트랙 성향의 신속한 대응책을 마련하고 있는 영국의 MMC 사례와 약 20년간의 중장기적인 대응방안을 모색하고 있는 싱가포르의 Buildability 사례를 비교분석함으로써 양국이 제시하는 전략적 대응방안의 시사점을 도출하고 유사한 전략을 구사하기 위한 방안을 제안하였다. 그리고 본 연구가 제시한 대응전략을 프로세스 다이어그램으로 제시하여, 향후 전략개발의 방향성을 명확히 하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 추계 학술논문 발표대회
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• pp.76-77
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• 2015

In construction industry, management of construction factors such as cost, schedule, quality and safety is the most important key for delivering successful projects. According to the Smart Market Report, a magazine specialized in construction industry, recently said 'Off-site Prefabrication' is a significant trend related with construction productivity in global construction industry. It is a kind of practice shift from On-site to Off-site. A lot of general contractors in oversea have been using 'Multi-trade MEP Ceiling Rack Prefabrication' method for getting benefits such as decreased cost & schedule and increased labor productivity. Thus, in this paper, critical management factors at each phase from design to installation was derived by researching case studies. Forwardly, it can be a basic guideline for applying Multi-trade MEP Ceiling Rack Prefabrication in Korea construction industry.

• 한국산업융합학회 논문집
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• 제26권4_2호
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• pp.687-696
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• 2023

In recent construction sites, digital maps obtained through drone photogrammetry have garnered increasing attention as indispensable tools for effective construction site management. the strategic placement of Ground Control Points (GCPs) is crucial in drone photogrammetry. Nevertheless, the manual labor and time-intensive nature of GCP surveying pose significant challenges. The purpose of this study is to design the concept of automated GCPs survey technology for enhancing drone photogrammetry efficiency in construction sites. As a result, the productivity of the automated method was analyzed as 118,894.7㎡/hr. It is over 25% productivity improvement compared to traditional methods. In future studies, economic analysis of automated methods should be studied.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.1216-1222
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• 2005

A shortage of construction field workers has been a serious problem, both in the developed and in the developing countries. As a solution for conquering this problem, these countries import foreign laborers from nearby less-developed countries. While this contributes to lessening the labor deficiency, foreign workers are relatively inefficient in productivity and are often exposed to the cross-cultural risks due to cultural differences, communication difficulties, different work ethics and customs, etc. Despite these facts, construction firms do not well address these issues and are lagged in establishing an appropriate management strategy against it. This paper presents a practical management plan for foreign construction workers through Focus Group Interviews (FGI) and survey investigation. On this basis, this study examines the level of awareness and important managerial aspects of the issue of foreign laborers. Finally, it suggests a cross-cultural and ready-to-use practical human resource management plan for facilitating the foreign worker's productivity.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.354-356
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• 2015

As domestic recession has had an adverse impact on many Korean companies in Korea, financial soundness has become a critical issues. It is essential to identify financial risk factors to prevent workout as well as to improve the financial condition of domestic construction companies. Therefore, this study derived important management indicators and the financial ratios that belong to each indicator through a comparative analysis between healthy companies and workout companies with financial statement. As a consequence, key financial ratios are derived into 3 of 25 ratios; Equity Ratio in stability indicator, Total Asset Turnover Ratio in activity indicator, and Labor Equipment Ratio in productivity indicator. So, Korean construction firms are required close monitoring these critical financial ratios indicating variation between construction companies which have opposing statuses in finance in order to keep sound financial condition and increase productivity.

• 한국콘텐츠학회논문지
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• 제15권9호
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• pp.555-561
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• 2015

건설 산업은 인력 중심형 산업으로 건설현장의 기능 인력이 공사의 품질, 공기, 비용 등 생산성에 큰 영향을 미친다. 그러나 현재 건설 산업의 상황은 건설현장에서 건설기능 인력의 부족현상을 발생하고 있다. 이에 기존 건설기능 인력의 노령화가 가속되고 신규 기능 인력이 유입되지 않음으로 인해 건설 산업의 기능인력 부족현상과 기능 수준저하가 발생하고 있는 실정이다. 이를 해결하기 위해 외국인 기능 인력을 활용하는 건설 현장이 늘어나고 있다. 본 연구는 현재 건설 기능 인력과 관련된 문제점에 대한 현황을 파악하고 그 대안을 제시하기 위하여 14개 현장 43명의 현장 관리자를 대상으로 설문조사를 수행하였다. 그 결과 외국인 기능 인력은 목공과 철근공이 많았으며, 기능 수준은 낮은 것으로 나타났다. 외국인 기능 인력의 가장 큰 문제점은 언어 소통과 낮은 기능 수준이다. 그리고 노무 생산성과 안전사고 발생률도 내국인 기능 인력에 비해서 높은 것으로 나타났다. 따라서 본 논문은 응답자 의견을 근거로 기능 훈련, 언어 교육, 다문화 교육 등이 문제점 개선을 위해서 효과적이라고 제안하였다.

• Journal of Construction Engineering and Project Management
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• 제2권2호
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• pp.18-27
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• 2012

Despite the rapid development in the construction industry due to the changing new technologies, many projects still fail to meet target deadlines. Shortage in manpower and skilled laborers is one of the main reasons for such delays. Markets with high economic growth and economic expansion (such as Gulf Countries in the Middle East) may have pronounced labor the shortages. Labor subcontracting practices are used sometimes to increase production rates and meet project deadlines. This paper explains and analyses labor subcontracting practices currently being used in many places around the world (and especially in the Gulf Countries) and in particular defines a maximum overtime rate for laborers in the laborer-subcontracting method ensuring that the contractor gains both the time saved during overtime and also reduces the cost per unit produced. The mathematical model used formalizes a closed-form equation for overtime pay in similar situations and as such can be applicable worldwide. Data was collected from representative projects that employed such practices from various trades. Validation of the model and formula has been tested successfully by analyzing historic data. The results prove that contractors often do not reach the optimum use of their practices resulting in a higher cost per unit. The presented model and the analysis should be of interest to many contractors currently involved in the practice or considering its use and to those who wish to find new methods that would help in eliminating as much wastes as possible by allocating their resources in the most efficient way.

• 한국BIM학회 논문집
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• 제7권3호
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• pp.31-39
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• 2017

BIM is effective to improve the labor productivity of construction participants. From this point of view, it is important to analyze the outcome related with BIM Labor which covers most of the BIM investment costs. This research focuses on BIM RFI which is one of the major task of the BIM labor and analyze the outcomes. In addition, this research was quantitatively analyzed by the standby time and related cost caused by BIM labor, which affect the results of the project participants. To this end, analytical standby queue model was utilized to analyze the labor focusing on micros TASK. 11 projects were selected to analyze the results of BIM labor and RFI that the project participants requested to the BIM labor was collected. Through this, it collected variables for analyzing results, and Finally, we pulled out 4 projects for analysis. In this study, the basic results analysis of RFI processing of the BIM labor, the probabilistic analysis of BIM labor service status, and the economic analysis of BIM labor optimal inputs were performed by using the research model presented. The results of this study can be utilized to formulate the optimal strategy for BIM labor inputs(e.g. number of employees, level, time point, etc.) of the construction phase. Moreover, it can contribute to ensuring the credibility of the BIM ROI results by presenting the cost of BIM services in BIM ROI analysis and the standby cost of project participants.