• KSCE Journal of Civil and Environmental Engineering Research
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• v.34 no.2
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• pp.667-676
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• 2014

This study has conducted case studies in order to suggest alternatives to the historical data-based estimate system. Price fluctuation calculation methods based on historial cost indexes, standard estimate and construction cost indexes were applied to 9 road construction sites in Jeju for an analysis. As a result, in 5 construction sites (about 56% of 9 sites), the index control rate calculated based upon historical data-based estimate system was higher than that calculated based upon standard estimate and construction cost indexes. Thus the establishment of the requirements for the adjustment of contract price due to price fluctuation delays, which leads to a significant difference in price fluctuation amount. And, in an analysis of construction cost indexes, the indexes for road construction were used for calculating index control rate which ranges from 2.0 to 9.4 percent, indicating the time of construction amount and price fluctuation application has a significant influence on index control rate.

• Proceedings of the Korean Institute of Building Construction Conference
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• v.y2004m10
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• pp.83-86
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• 2004

Index adjusted ration method has been widely utilized in public construction secter for contract sum adjustment by price fluctuation. In this method. the Production Price Index are used for calculating the base ratio. but the PPI can't reflect the property of construction project in respect of the selected item and weight structure. In this research we prove the problem of using the index adjusted ration method in contract sum adjustment by price fluctuation. and improve it by using the construction cost index. which has the property of construction project. And the result. we figure out the difference between the PPI and CCI by $6.7\%$ in maximum value.

• Korean Journal of Construction Engineering and Management
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• v.12 no.4
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• pp.70-78
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• 2011

In case of long time progressive construction work, we need contract sum adjustment due to escalation for a period of works and the process of applying, consistent and obvious criterion is required. In this study, it were attempted to figure out problem and study this rational improvement by giving examples based on core activities of escalation adjustment. Based on literature study and legal system analysis, we classified processes of contract sum adjustment for escalation and defined 20 core activities for each process. From this measured variable, we carried out case study by giving 37 examples of escalation. As a result of case study, problems of each process was found and we suggested rational improvement. As this study, providers will be able to waste budget and the other will be given smooth escalation adjustment.

• Construction Engineering and Management
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• v.23 no.4
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• pp.18-22
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• 2022

• Construction Engineering and Management
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• v.23 no.4
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• pp.14-17
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• 2022

• 월간 기계설비
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• s.175
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• pp.60-61
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• 2005

• 월간 기계설비
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• s.173
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• pp.79-90
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• 2004

• 월간 기계설비
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• s.172
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• pp.48-56
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• 2004

• Korean Journal of Construction Engineering and Management
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• v.6 no.1 s.23
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• pp.186-194
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• 2005

The purpose of this study is to examine the problems of the regulations regarding the modification of subcontact price. It also suggests several measures to improve the regulations related to the subcontact price adjustment which help to reduce unnecessary claims and commercial disputes. The literature research, structure and context analysis on the subcontract regulation and survey are adopted as basic research methods. The primary findings of this study are summarized as the following: (1) A provision outlining necessary procedures that an owner and a contractor should notify a subcontract or the adjustment of contact price needs to be made. (2) A provision allowing procedures that subcontactor could make the alteration of subcontract agreement and adjustment of subcontact price needs to be made. (3) The terminology like a unit cost and the rate of contact price needs to be clearly defined in order to improve the criterions of the subcontact price adjustment. (4) The criterions and additional expenses that the contractors ate responsible far need to be defined.

• 월간 기계설비
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• s.289
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• pp.72-74
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• 2014

대한설비건설협회는 해외건설 현장의 불공정 하도급거래 관행을 개선코자 제18대 대통령직 인수위원회 및 국토교통부, 공정거래위원회 등 관련 부처에 해외건설업 표준하도급계약서 제정을 건의해 왔다. 특히 Back to Back 원칙(발주자와 원도급자간 계약내용을 하도급계약에 적용)에 따른 하도급 대가 유보행위와 계약금액조정 불인정 등 각종 불공정한 하도급계약 조건으로 인한 회원사의 피해를 방지할 수 있는 해외건설업 표준하도급계약서 제정을 추진했다. 그 결과 국토교통부와 공정거래위원회가 공동으로 우리협회 의견이 반영된 '해외건설업 표준하도급계약서'를 제정하고 지난 7월 3일부터 시행에 들어갔다.