• Land and Housing Review
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• v.4 no.4
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• pp.425-434
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• 2013

The Small and Medium Business Administration specified 123 construction materials mandatory to purchase directly and forced the public owners to provide the contractors with materials as required by related law. This study extensively reviewed various characteristics and management factors of the owner-providing materials consumed in the public apartment housing under Direct Buying System(DBS) from the public owner's perspective. Subsequently, the major managed materials were identified, and the proper response plan was developed along the material procurement process. The Procurement Management Load Indices (PMLI) of 43 materials were evaluated according to rating criteria with procurement path, project-specified level, user requirement level, supplier's responsibility, on-site work requirement, additional parts, and inspection standards. The tile and aluminum windows were classified in the group needing high-level procurement efforts to reduce the errors and ensure the efficiency. The accurate quantity estimation method, definite purchase details, management activity definition before and after production, additional quantity for rework, interference coordination were defined as the essential activities for effectively responding to DBS.

• Korean Journal of Construction Engineering and Management
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• v.5 no.2 s.18
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• pp.106-114
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• 2004

As the scale of construction work is enlarged, complicated and diversified, much construction information from the large number of construction sites is generated and reported to the head office. To control much information generated in construction sites simultaneously, the necessity of supporting system which could extract necessary information is increased. However, comparing with those of large companies, medium-sized companies's organization of head office and management system are weak. So it's difficult to manage multi-projects. Among these site managements, resource management is an important management area. But, resource planning is based on experience and judgement and has not associated with schedule information. So when schedule is changed, the plan must be amended manually. This study investigates material-planning model for multi-project management which is connected with daily report system and scheduling software.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.182-189
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• 2007

To reform and improve the productivity of construction industry, 1) it should be encouraged to improve the construction production process and 2) it is required to enhance reliability of construction information based on the systematic thinking process. To promote the information reliability created during construction production process, Lean Construction Research Center(LRC2) is developing a supporting system to improve design/material supply/schedule management, functioning to efficiently manage the information created at construction production processes and developing a web based construction information system that provides result management/decision making support/knowledge based information services.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.490-493
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• 2002

There have to be a pooled procurement in order to control construction in every stage. And we need also efficient supply chains to utilize the process. Researching and developing the method, which make it possible the supply chain management by modeling for Internet-enabled pooled procurement in construction, through breakdown in materials is currently in-progress the inside and out side of country. The objective of this paper is to find a reform while modeling the production process of cable duct moreover understanding the wasting factors in each step.

• Journal of the Korea Institute of Building Construction
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• v.9 no.6
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• pp.183-188
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• 2009

HwaSeong (Suwon Fortress) was built during the reign of King Jeong-jo in the Choseon Dynasty. Detailed information on the construction of HwaSeong can be found in Hwaseong Seongyeok Euigui. In this sense, it is necessary to perform a comparative analysis on the Hwaseong Seongyeok Euigui based on construction management factors. This paper aims to analyze the HwaSeong construction project from a modern construction perspective by comparing and reviewing information related to the procurement of construction materials of the time. For this, wooden and steel materials and tiles were analyzed by supply area, supply channel, type and price. From the results of the analysis, it is found that the government used both private and official channels to supply materials. In particular, except for wooden materials that could be supplied from Bongsan, the supply of materials showed a high dependency on private channels. In terms of steel, it was almost 30 percent cheaper through private channels than when purchased through the official channel. Finally, materials vulnerable to damage like tiles were manufactured from the areas near the construction site. From this fact it can be interpreted that the government had a flexible procurement system, including manufacturing on the spot and external suppliers,depending on the property of the material. It is expected these analytical results will serve as key data to understand the management factors in constructing HwaSeong.

• Korean Journal of Construction Engineering and Management
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• v.5 no.1 s.17
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• pp.133-139
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• 2004

The purpose of this study is to present an improved lift-up &procurement work flow for effective resource utilization in building construction. The current lift-up &procurement work flow has some waste factors; complicated information system, connection lack with process and decision-making delay. Therefore the study applied the value stream mapping methodology for improvement of current lift-up &procurement work flow. The main contents of the study are as follows; 1) Problems of current work flow were analyzed through current state mapping(CSM). 2) An improved work flow was suggested through future state mapping(FSM). 3) An improvement effect analysis of information system and lift-up planning was investigated. The study recommends continuous improvement of lift-up &procurement work flow and efficient management of information in building construction as a future research.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.05a
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• pp.28-35
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• 2003

자동차 부품기업은 재료비의 비중이 제조원가의 $70\%$이상 차지할 정도로 부품자재의 조달과 공급이 중요한 영역이며, 완성차를 제조하기 위한 공급망관리에 있어서 필수적인 분야라고 할 수 있다. 본 연구는 국내 자동차부품기업을 대상으로 공급망관리(SCM) 기능이 요구되는 부품조달 및 공급을 위한 자동차 부품업체간의 전자상거래를 활성화하기 위한 목적으로 전자조달(e-Procurement) 기업정보포탈(EIP) 시스템의 프로토타입 을 제안하였다. 제안된 e-Procurement EIP 시스템은 완성차 제조를 위하여 부품을 공급하는 1자 공급업체를 중심으로 2차 공급업체와의 부자재 및 MRO, 소모성 자재를 중심으로 하고 있으며 정보의 통합화를 위하여 중소기업간의 협업 프로세스의 개선, 안전한 XML 전자문서의 교환, 구매 일정관리 및 커뮤니티 형성, 부가서비스 기능 둠을 제공함으로써 부품기업간의 효율적인 협업체제 구죽 및 업무 신속성과 업무처리비용을 절감할 수 있다.

• Journal of the Korea Institute of Building Construction
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• v.11 no.3
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• pp.319-325
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• 2011

During a construction project, construction managers must be provided with material information to help them to make decisions more efficiently without delaying the delivery of material. Construction work can be smoothly performed with the proper material supply. Construction duration depends on several material-related decisions, including the order, delivery, and allocation of material to the correct work location. Hence, it is worthwhile to introduce data warehouse techniques that generate subject-oriented and integrated data to construction material management. The data warehouse for construction material management can perform multidimensional analysis and then define KPIs (Key Performance Index) in order to provide construction managers with construction material information such as lead time, material delivery rate, material installation rate and so on. This research proposes a method of effectively facilitating large amounts of data in the operating systems during the construction management process. In other words, the proposed method can supply structured and multi-perspective material-related information using data warehouse techniques.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.442-445
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• 2003

The purpose of this study is to present an improved lift-up & procurement work flow for effectiveness of resources increase in building construction. The current lift-up & procurement work flow has some waste factors; complicated information system, connection lack with process and decision-making delay. Therefore the study applied the value stream mapping methodology for improvement of current lift-up & procurement work flow. The main contents of the study are as follows; 1) A problem of current work flow were analyzed through current state mapping(CSM). 2) An improved work flow was suggested through future state mapping(FSM). 3) An improvement effect analysis of information system and lift-up planning The study recommends that continuous improvement of lift-up & procurement work flow and efficient management of information in building construction.

• Construction Engineering and Management
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• v.11 no.3
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• pp.5-7
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• 2010