• Title/Summary/Keyword: Construction Productivity

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Basic Study on the Measurement of Unit Productivity Data By Image Processing Technology (이미지 프로세싱을 활용한 생산성 정보 측정방안에 관한 연구)

  • Lee, Chan-Kyu;Lee, Seung-Hyun;Son, Jae-Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.11a
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    • pp.281-282
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    • 2012
  • Construction performance and productivity improvement are key focus areas in construction industry for any nation. There have been frequent delays and cost overruns in construction projects and poor productivity is one of the major contributions. For this reasons, there have been many research studies performed on the improvement of construction productivity for several decades. However, measuring productivity on a construction job site is still not an easy work. Because collecting reliable data consistently from the job site requires a lot of personnel efforts causing extra time and cost. This paper provides a basic study on the application of image processing technology for measuring unit productivity. It presented the possibility of unit productivity measurement by image processing technology through case study.

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The Study on Correlation Between Factors Decreasing Construction Productivity and Waste Factors with Relation to Lean Construction (린 건설과 연계한 생산성 저하 요인과 Waste 요인과의 상호 관련성 연구)

  • Park Joo-Hyun;Kim Dae-Young;Lee Hak-Ki
    • Korean Journal of Construction Engineering and Management
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    • v.4 no.4 s.16
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    • pp.164-172
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    • 2003
  • 생산성은 프로젝트를 관리하는데 있어서 효율성을 측정하는 중요한 지표이다 또한 건설 생산성은 비용 및 일정과 연관성이 있을 뿐만 아니라 프로젝트의 성공 여부와도 관련이 크다. 프로젝트에서 생산성의 중요성에도 불구하고 국내에서의 생산성 관련 연구는 생산성에 대한 기본 개념 및 원칙에 관한 기초적인 연구 없이 정량적인 연구에 집중되어 있으며, 관련 데이터 수도 적은 실정이다. 국내 건설 공사의 생산성을 향상시키기 위해서는 생산성 관리의 정량적친 요인뿐만 아니라, 정성적인 요인까지 관리해야 하며, 저하요인에 따른 체계적이고 세부적인 프로세스 및 기법이 제시되어야 한다 이에 국내 건설 공사의 생산성 관리에 린 건설을 도입하고자 한다. 본 연구에서는 국내 생산성 저하요인과 린 건설에서의 Waste 요인과의 상관관계 분석을 통해 국내 건설 공사 현장에서의 Waste 주요 의미를 살펴보고 두 요인간의 상호 관련성을 파악하여, 린 건설의 프로세스 및 기법을 국내 건설 공사 현장에 적용하기 위한 이론적인 근거를 제공하고자 한다.

Digital Pen System for Measuring the Productivity at Construction Site (건설현장 디지털 펜 활용 생산성 측정 시스템 구축)

  • Cho, Ye-Rim;Kim, Tae-Yong;Shin, Yoon-Seok;Kim, Gwang-Hee
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.74-75
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    • 2016
  • The success of the domestic construction project is mostly judged by process and costs. It can raise the accuracy of the process and costs through productivity measurement and management. System which can increase the productivity and efficiency is required at this moment. The purpose of this study is to introduce the case of measuring productivity system using the Digital Pen System. To utilize Digital Pen System can raise construction productivity. This system is expected to more efficient to accumulation and utilization of construction site information.

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Operation Control Model of Lift Car to Reduce Worker Lifting Time in Tall Building Construction (초고층 건축공사의 작업원 양중시간 단축을 위한 리프트 카 운행제어 모델)

  • Nam, Chulu;Kwon, Jaebeom;Kim, Taehoon;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2016.05a
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    • pp.160-161
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    • 2016
  • In tall building construction, lift car for worker lifting is a critical factor for construction productivity. To reduce worker lifting time, existing researches have been conducted on lift car planning. While, research on lift car operation is insufficient. For the efficient reduction of worker lifting time, lift car operation control is needed with lift car planning. Therefore, this research suggests operation control model of lift car to reduce worker lifting time. According to the result of a model test, the operation control model contributes to reasonable reduction of worker lifting time.

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An Analysis of 3D Printing Activities for Vertical Structure of Small Building (소형건축물 수직골조 대상 3D 프린팅 액티비티 분석)

  • Park, Hyeong-Jin;Ju, Gi-Beom;Seo, Myeong-Bae
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.05a
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    • pp.308-309
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    • 2018
  • Construction automation is needed to improve construction productivity. 3D printing is a key technology of the 4th industrial revolution, and when applied to the construction field, the ripple effect is very large. In this paper, we propose a 3D printing method that can predict the 3D printing process and estimate the construction duration for each process. Through literature review and expert consultation, eight 3D printing activities for structure work were derived. Construction duration and cost estimation for each activity will be needed in the future research.

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Selection of a Probability Distribution for Modeling Labor Productivity during Overtime

  • Woo, Sung-Kwon
    • Korean Journal of Construction Engineering and Management
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    • v.6 no.1 s.23
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    • pp.49-57
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    • 2005
  • Construction labor productivity, which is the greatest source of variation in overall construction productivity, is the critical factor for determining the project performance in terms of time and cost, especially during scheduled overtime when extra time and cost are invested. The objective of this research is to select an appropriate type of probability distribution function representing the variability of daily labor productivity during overtime. Based on the results of statistical data analysis of labor performance during different weekly work hours, lognormal distribution is selected in order to take advantage of easiness of generating correlated random numbers. The selected lognormal distribution can be used for development of a simulation model in construction scheduling, cost analysis, and other applications areas where representation of the correlations between variables are essential.

The Effective Process of Tower Crane Lifting & Material Management Using Smart-Phone (스마트 폰을 활용한 타워크레인 양중 및 자재 관리 프로세스 효율화 방안)

  • Lee, Jeong-Ho;Kim, Young-Suk
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.28 no.7
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    • pp.141-150
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    • 2012
  • In recent years, construction project is bigger and higher to improve space efficiency. The effective material lifting operation using Tower Crane(T/C) is one of the important factors in order to improve construction productivity. The present material lifting operation planning generally depends on the experience of construction manager. Furthermore, the material lifting operation planning is not performed systematically because of the following problems;1) finding location of scattered materials is difficult, 2) communication is confused between flagman and T/C operator, 3) lifting operation data has not been not used for planning of material lifting operation. Therefore, this paper suggests a process for the effective material lifting planning and operation using smart phone. It is expected that the effective use of suggested process contributes to improve the efficiency of lifting operation and material management and the project productivity.

A Study on the Operating System of the Architectural Standard Scale of Length(尺度, Korean foot) used in the Hwasong City Wall in the 18th Century (척도운용체계를 통해 본 18세기 화성건축의 건축구성에 관한 연구)

  • Lee, Ho-Rak;Lee, Sang-Hae
    • Journal of architectural history
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    • v.6 no.2 s.12
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    • pp.65-77
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    • 1997
  • The Hwasong City Wall was built for three years(1794-1796), but the real construction term was taken only 28 months. The wall and the buildings on the wall were built simultaneously, and the esttimated construction cost was highly restricted. These conditions were main factors for considering the high efficiency of construction productivity. This study examines these factors that are reflected in the operating system of the architectural standard scale of length, the architectural composition system in the Hwasong City Wall to reduce the construction cost. Through the study, following factors are found. 1.The rule of multiple proportion is found in the relationship between the partition distance, that is, span and the height of the girder which is related to the productivity of ready-made building members. 2.The ruling grade system of scale in the component members is found in the chang-bang(창방, penetration members)

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Analysis of Trends in the Labor Productivity and Actual Amount of Labor Input in the Reinforced Concrete Construction of Health Facilities (의료시설 철근콘크리트공사에서 생산성과 실투입 노무량의 추이에 관한 분석)

  • Jeong, Jae-Woong;Jeon, Sang-Hoon;Koo, Kyo-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.05a
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    • pp.103-104
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    • 2015
  • Process management of reinforced concrete construction that many labor quantity and cost is put at a construction site is very important and gives a lot of influence on the subsequent process. Thus, there will be only used as a useful tool for process control by medical facilities and trend analysis of the flow of the process by the amount of labor input and productivity in reinforced concrete construction. productivity by type and quantity, and comparative analysis. In addition, it is necessary to calculate the standard of estimate and real commitment to labor productivity by type and quantity, and comparative analysis.

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Database Development For Efficient Construction Process Management Using Construction Simulation Technique and Bayesian Approach (건설 시뮬레이션과 베이시안 기법을 이용한 공정관리 데이터베이스 구축)

  • Ko, Yong-Ho;Park, Min-Ha;Han, SeungWoo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.11a
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    • pp.94-95
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    • 2014
  • Construction industry has become higher, larger and more complicated. It has been analyzed that the process planning in the construction site has been made by the site engineer experience mostly and some were made based on historical data. However, such plans have been investigated that require numerous revisions during construction which means that the plans made through such methods are not reliable. Numerous studies in this field have been conducted trying to solve such problems developing methodologies to overcome such limitations. It has been analyzed that many studies have focused on suggesting prediction models only that cannot be used for both actual planning prior to construction and process monitoring during construction. Therefore, this study suggests a methodology that effectively manages construction productivity by applying simulation methodology combined with bayesian approach focusing on the high-rise curtain wall operations.

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