• Korean Journal of Construction Engineering and Management
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• v.13 no.1
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• pp.148-159
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• 2012

Recently construction companies' capital condition has been aggravated due to low profit, fierce competition and market contraction. For this reason, the companies rely on public construction projects that protect construction fee by regulations. Despite these regulations, problems regarding progress payment are constantly happening. Also, insufficient analysis on interaction between contractors makes policy making difficult. Thus, in this study, interaction between contractors are quantitatively determined according to delay of application and payment based on current public construction regulations on construction stage. A system dynamics model is used, which analyzes the problems based on an interaction between contractors, and solutions for progress payment application and payment delay are suggested according to the research results.

• Korean Journal of Construction Engineering and Management
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• v.4 no.4 s.16
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• pp.123-136
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• 2003

In multiple apartment construction project, BCWS is a critical management factor and has a great influence on the success of the project. Due to the many apartment buildings & facilities which produce numerous activities, there are several problems in making out a time schedule of work as well as production and management of precise BCWS from the allocation of resources. In this study, actual condition survey was executed in terms of the calculation and the management of BCWS. This study propose better solutions for efficient calculation of BCWS through the analysis of the problems and standard schedule & progress curves.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.434-437
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• 2003

In apartment project, BCWS is a critical management factor and has a great influence on the success of the project. But due to the characteristics of large apartment complex, there are several problems in making out a time schedule of work as well as production and management of precise bcws from the allocation of resources. In this study, Actual condition survey was executed in terms of the calculation and the management of BCWS. This study propose better solutions for efficient calculation of bcsw through the analysis of the problems and the origins relating to BCWS from a field area.

• Resources Recycling
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• v.27 no.2
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• pp.48-54
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• 2018

Batch ion exchange experiments of Au(III) were performed from ammonium chloride solution by employing strong anionic exchange resins (Amberlite IRA 402 and AG 1-X8). Au(III) was well loaded into the two resins and the loading behavior of Au(III) into AG 1-X8 was superior to that into Amberlite IRA 402. The loading of Au(III) into AG 1-X8 followed Langmuir adsorption isotherm and the experimentally determined loading capacity was 355 mg/g. Au(III) was successfully eluted by $HClO_4$ from the loaded AG 1-X8 and the elution percentage of Au(III) increased with the concentration of $HClO_4$.

• 월간 기계설비
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• no.9 s.194
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• pp.54-55
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• 2006

공사대금에 대한 압류나 가압류가 이루어진 경우 하도급대금 직접 지급 가능 여부와 관련한 논란에 대해 사업부가 가능하다는 판결을 내려 주목된다. 전주지방 법원 제2민사부 (재판장 조현욱 판사)는 "기성금의 청구일자보다 제3 채권자의 압류나 가압류일 자가 앞선다고 하더라도 직접지급합의서가 제3채권자의 압류나 가압류보다 먼저 작성됐다면 발주자는 하도급대금을 수급사업자에게 직접 지급해야 한다"고 판결했다. 3개의 전문건설업체가 전주국도유지건설사무소를 상대로 '하도급대금을 직접 지급해 달라'고 청구한 소송에서 재판부는 "발주자가 하도급대금을 수급사업자에게 직접 지급하기로 발주자,원사업자,수급사업자 간에 합의한 경우에는 '그 합의한 때' 발주자의 원사업자에 대한 대금지급채무는 소멸된다'며 이같이 판결했다. 이번 판결이 하도급거래공정화에 관한 법률 제14조 제 2항에서 규정하고 있는 '발주자의 원사업자에 대한 대금지급채무의 소멸시기'가 '수급사업자가 하도급대금의 직접 지급을 요청한 때'가 아닌 '발주자,원사업자,수급사업자 간에 직불을 합의한 때'임을 분명히 한 것이어서 하도급대금 직불에 미온적이었던 발주기관들의 관행을 개선시키는 계기가 될 것으로 예상된다.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.1352-1353
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• 2012

본 연구는 지방국토관리청의 시설공사의 계약 체결과 기성 준공금 지급 업무를 대상으로 발주청 내부시스템과 국가종합전자조달시스템간의 연계를 위한 업무절차 개선방안을 마련하고 관련 기능을 개발함으로서 건설사의 계약 및 기성 업무처리의 효율성을 제고하고자 한다.

• 월간 기계설비
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• s.264
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• pp.70-71
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• 2012

건설산업기본법이 지난 6월 1일 개정되어 시행에 들어갔다. 이 중 대한설비건설협회가 하도급자의 권리 보호와 공생발전을 위해 그동안 국토해양부에 관련제도 개선을 지속적으로 건의한 결과 하도급자 보호를 위한 부당특약 유형 확대 등이 개정되었다. 하도급자 보호조치 강화로는 부당특약 유형 확대, 하도급공사 준공 기성 검사결과 통지 의무화, 선급금 지급기한 신설, 도급계약서 미교부시 과태료 부과 등이 개정되었고 부실 부적격 업체에 대한 제재 강화로는 건설업 등록의 결격사유 강화, 건설업 등록말소 기준 강화 등이 개정되었다. 또 건설업 신고대상 추가, 과징금 상향조정, 과태료 대상 등도 개정되었다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.340-343
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• 2004

The purposes of this study is to survey unfair aspect of specific provisions in the construction contract. The research method of this stud)'includes judicial precedents and a questionnaier survey. The result of thus study are as follows: 1) unfair payment condition gives increase to faulty construction. 2) shift of the responsibility gives increase to delay, 3) adjusted contract sum gives increase inappropriate compensation to contractor.

• Korean Journal of Construction Engineering and Management
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• v.2 no.4 s.8
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• pp.69-79
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• 2001

Characteristics of Contactor's Defect Liability was too many discussed. But it's not clearly defined yet. Because recent Government Construction Projects are very complex and executed through long time, too many conflicts were appeared related to Contactor's Defect Liability. Therefore to analyse and to resolve the conflicts legal aspects of Contactor's Defect Liability stated in Civil Law and Government Contract Act was systematically compared. The result of this research is as follows : (1) Characteristic of Contactor's Defect must be regarded as a breach of Contract and be an incomplete contract implementation. (2) To decide the range of Damage, Characteristic of Defect must be regarded. (3) Contactor's Defect Liability must be effectual from the day of delivery. (4) Retainage must be added to secure the completion during the Contract Period and Defect Repairing Liability must be omitted in the Contract performance Security.

• Economic and Environmental Geology
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• v.55 no.4
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• pp.339-352
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• 2022

As environmental criteria items are increased or strengthened, cases of heavy metal contamination by geogenic origin are increasing, and the need to distinguish between natural and anthropogenic origins in soil or groundwater exceeding the standard is increasing. In this study, geochemical occurrences of geogenic heavy metals were identified through statistical processing of the national geochemical map data and evaluation of geochemical characteristics of regions with high geoaccumulation indices. Cobalt, Cr, Cu, Ni, Pb, V, and Zn were targeted for which the national geochemical maps were prepared, and Co, Cr, Ni, and V derived from ultrabasic or ultramafic rocks were classified as factor 1. Copper, Pb and Zn of non-ferrous sulfide origin were classified as factor 2. In particular, enrichment of heavy metals by factor 1 occurs mainly in the serpentine distribution areas of the Chungcheong region, and there is a risk of contamination in neighboring areas. In the case of factor 2, geogenic occurrence is concerned not only in non-ferrous metal mineralization areas such as Taebacksan and Gyeongnam mineralization zones, but also in Au-Ag mineralization areas distributed nationwide.