• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.299-302
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• 2003

Recently the timely delivery and the appropriate management for construction materials are of great significance in that the buildings are getting complicated and more various materials need to be handled. However, these systems have some problems, and do not seem to work effectively yet. The reason is that the lack of operation scheme for systematic management in project. In this study the efficient scheme for the .material procurement system in construction firms to manage the construction materials efficiently was discussed.

• Korean Journal of Construction Engineering and Management
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• v.10 no.1
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• pp.16-25
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• 2009

In construction industry, the cost related to material is different from each other under the characteristic of projects. However, it has 40% of the whole cost in the composition of prime cost. Recently, While the construction work become bigger, specialized and complex, it is complex to carry in materials because of shortage of space. However, in many cases, material management has been underestimated as well as the material management is depending on experience of site managers so it has been studied about frequently. In this study, I suggest four classification methods of material characteristic ETO, ATO, MTO, MTS. I also analyze what the most efficient supply management of the site materials is through researching the characteristics of the material distribution. In conclusion, I would like to build the material management classification for the characteristics of materials.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.553-557
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• 2007

In general, material cost of a construction project is more than 30$^{\sim}$40% of total construction cost, thus on site material control is very important. The factthat buildings have recently become higher and bigger also increases the importance of on site material control. However, on site material control has not been considered as an important management issue. This study classifies building construction materials considering the material delivery characteristics such as ETO, ATO, MTO and MTS and the unique characteristics of each materials. Using the classification, this study examine the requirements for on site material control of each materials. Finally, this study suggests on site material control systems for each construction material.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.874-877
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• 2007

최근 건설 산업이 고도화, 지능화됨에 따라 건설자재정보의 효율적인 관리방안으로 RFID 기술을 이용하려는 연구 및 적용 사례가 증가 하고 있다. RFID(Radio Frequency Identification)란 라디오 주파수를 이용한 무선인식 기법을 뜻하는 것으로 건설자재에 RFID Transponder(이하 태그)를 부착하여 생산, 유통, 설비 등 전 과정의 정보 추적 및 관리가 가능하다. 그러나 RFID 시스템 특성상 전자기장이 형성되는 철골자재나 수분이 포함된 콘크리트, 도료(안료) 등의 자재에서는 RFID 적용이 쉽지 않다. 또한, 현재 사용 중인 RFID 장비마저도 표준화 되어 있지 않고 사용 주파수 대역 또한 각각 다르기 때문에 건설자재에 적용하기위한 RFID 시스템의 표준화 및 규격화가 절실하다. 본 논문에서는 건설자재에 RFID를 적용하기 위한 표준화 방향을 제시하는 기초 연구로써 목재, 철재 빔, 도료(안료), 콘크리트, 배관자재(철/동/PE)에 Passive Type의 일반(Pager) 태그, 금속 태그, 액체형 태그를 부착 매립하여 125KHz, 13.56MHz, 900MHz의 주파수 대역과 자재 물성별 인식거리 및 인식률 시험을 진행하여 건설자재에 RFID를 적용하기위한 표준 주파수 대역 및 재질에 따른 적정 태그를 제시하고자 한다.

• 월간 기계설비
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• s.231
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• pp.90-90
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• 2009

원자재 가격의 계속된 오름세는 그렇지 않아도 힘겨운 설비건설업계를 더욱 옥죄고 있다. 이번 호에서는 4/4분기 주요 자재 전망과 현장 손익관리 요소에 관하여 소견을 내어 보았다. 현장 손익의 핵심 요소는 인건비, 자재비 관리라고 할 수 있는데, 인건비는 단가가 거의 고정이므로 투입 인원 관리 외에 별도로 고려할 내용이 없지만, 자재는 공사기간 내내 변동성이 크므로 특별한 전략이 필요하다고 생각한다. 먼저 자재 동향부터 살펴 보자.

• The KIPS Transactions:PartD
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• v.16D no.3
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• pp.433-440
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• 2009

As information technology of constructional area develops recently, web-based on-line system is rapidly increasing to provide information on diverse constructional materials so as to enhance productivity of constructional business and to reduce cost. Since the constructional materials information provided by these systems, i.e., quality, specification, etc are not standardized, however, the staffs on the constructional site suffer considerable difficulties in using materials information when acquiring information on specific materials, e.g., using diverse information systems or repeating similar jobs. Thus, this research typified information items of constructional materials on the basis of GDAS and designed multi system model to control integrated information on constructional materials. This system can efficiently control and utilize materials information by supporting automatic classification of constructional materials to which OmniClass Part-22 and UNSPSC are applied, conditional complex retrieval of materials information, real-time automatic embodiment of electronic catalog and retrieving/controlling RFID.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.645-648
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• 2008

최근 건설 분야의 정보화 기술이 발달함에 따라 건설생애(Life Cycle) 과정에서 파생되는 방대한 양의 정보를 수집·가공·축적·제공 하는 시스템이 급증하는 추세이다. 특히, 건설공사의 주요요소인 자재 정보를 제공하는 Web 기반 온라인 시스템만 현재 110여개 이상으로 토목·건축·설비·소방 분야에 이르기까지 매우 다양하다. 그러나 이러한 시스템에서 제공 중인 정보가 표준화 및 정형화 되지 않아 건설현장 실무자들의 정보 획득에 있어 많은 어려움을 겪고 있다. 이에 본 연구에서는 정형화되고 표준화된 건설자재정보를 제공하기 위해 건설자재 분류체계를 정의하고 건설자재 속성정보를 정형화하여 자재별 분류체계검색, 통합검색, 카테고리검색 뿐만 아니라 전자카탈로그로 변환 및 생성이 가능한 건설자재정보 관리 시스템을 설계 및 구현 하였다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.702-707
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• 2006

There have been certain extent of material inventory in construction site because of difficulties in ordering by small quantity, strategy of securing future requirements and prevention of delay. However, carrying these inventory entails a financial cost called inventory holding cost and decrease construction productivity, so proper inventory management in construction industry is important for construction efficiency and cost reduction. This study tries to find analytical method of inventory management. It includes ordering decision which decide how much to order and when to order. Setting these strategies including deciding safety inventory, input and ouput variability are able to controled.

• 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.

• 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.