• Journal of the Korea institute for structural maintenance and inspection
• /
• v.21 no.3
• /
• pp.9-18
• /
• 2017

Construction Management at Risk (CMAR) is a project delivery method that enables CM companies to deliver projects at a Guaranteed Maximum Price (GMP). General contractors can apply CMAR from the initial design phase right through the construction phase to reduce risks and improve project performance. One of the major advantages CMAR offers is that it permits a general contractor to provide a comprehensive suite of preconstruction services, including estimating, a constructability review, value engineering, drawings and a specification review, green building, and Building Information Modeling(BIM), among others. However, general contractors in South Korea currently provide only limited preconstruction services using CMAR because few CMAR projects have yet been implemented in Korea and their experience using the method is therefore limited. This benchmark study of how foreign general contractors utilize CMAR in their projects, particularly during the preconstruction process, its purpose, and the roles and responsibilities of each of the different participants in successful implementations thus provides invaluable information and will serve as a useful guide for Korean contractors seeking to incorporate CMAR preconstruction services in their projects and thus improve the competitiveness of their construction businesses.

• Journal of the Korean Geotechnical Society
• /
• v.37 no.9
• /
• pp.25-36
• /
• 2021

Recently, the intelligent compaction technology for quality control of earthworks has brought attention as a quality control standard for earthworks. In this study, intelligent compaction technology and earthwork quality control methods were investigated and earthwork quality control procedures using intelligent compaction technology were considered based on field tests. Through the field compaction test of the silty sand (SM) fill material, it was confirmed that CMV and bearing capcaity index from plate load tests increased as the number of compactions increased. Based on the field test data, the average CMV and quality control target CMV were derived. The target CMV (34.2) was calculated through the correlation with the bearing capacity index of the plate load test, and the target CMV (36.6) was calculated through the analysis of the CMV increase rate. In this paper, the on-site compaction quality management procedure and methodology using intelligent compaction technology were discussed, and an intelligent compaction quality management method was proposed to promote the applicability of the technology.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.1
• /
• pp.389-398
• /
• 2016

Previous domestic studies on silos have been carried out in many ways in various fields. On the other hand, research on the design and construction of the silo itself have not be conducted actively and an economical approach is rare. The present study provides basic information to determine the scale of the most economical silo, while satisfying the necessary conditions required by construction companies or design firms. The analysis was carried out with various parameters for reinforced concrete structures, including four kinds of storage material (flour, granulated quicklime, sand, and iron ore), five capacity sizes (10,000, 30,000, 50,000, 70,000, 90,000 ton), eight variants of H/D (0.5~4), and three types of concrete compressive strengths (30, 35, 40 MPa). The findings established a general rule in that a silo designed between 1 and 3 H/D with a greater concrete strength (40MPa and over) depending on the type of storage material would be the most cost-effective (more than 50% of quantity and labor savings).

• 월간 기계설비
• /
• s.13
• /
• pp.114-116
• /
• 1991

설비인이라면 누구나 한번쯤 보온공사 때문에 노심초사 한 기억이 있을 것이다. 보온공사는 $2\sim3$개의 공정을 거쳐야 하는 시공상의 까다로움도 있지만 인력난 시대를 맞이한 최근에는 기능인력 수급에 애로점이 많기 때문에 설비인으로서는 여간 신경을 쓰이게 하는 것. 얼마전 본 협회 회원사인 대건기업(대표$\cdot$홍종훈)이 보온공사의 이러한 결점을 보완키위해 $\ulcorner$냉난방 배관용 단열재층 보온커어버$\lrcorner$를 개발(의장, 특허출원중), 보온공사에 완벽을 기할 수 있게 됐다.

• 월간 기계설비
• /
• s.305
• /
• pp.74-77
• /
• 2015

전국 시 도회는 지난 해 개최된 총회를 통해 제9대 시 도회장을 새롭게 구성하고 각 지역에서 설비건설업계 및 협회 발전을 위해 활발한 활동을 벌이고 있다. 이에 본지는 전국 시 도회장으로부터 사업계획을 듣는 코너를 연재하고 있다. 이번 호에는 장영흥 제주특별자치도회 회장[(주)영건 대표]으로부터 제주도회의 사업 추진 현황과 향후 사업계획을 들었다. 장영흥 회장은 최근들어 최대 호황기를 맞고 있는 제주지역에서 회원사의 정밀시공과 상생협력을 통해 기계설비가 핵심기술로 부각될 수 있도록 적극 노력하고 있다.

• Journal of the Korean Professional Engineers Association
• /
• v.34 no.3
• /
• pp.41-45
• /
• 2001

The nuclear power plant(NPP) construction is a mammoth project, which requires a huge construction budget and the long construction duration of about 7 years. Recently there is a trend to shorten the construction period, to save the construction cost and to ensure the competitiveness through adopting the open top construction method. In this method, the major equipment are moved into the building through its top, and the internal works of the reactor building are being in process without installation of a dome roof.

• Magazine of the Korea Concrete Institute
• /
• v.8 no.3
• /
• pp.84-92
• /
• 1996

구조물 붕괴사례에 대한 연구는 항상 공학관련 문헌에 한 부분이 되어 왔으나 교량기술의 향상에 기여할 수 있었던 1840년대와 1930년대 사이에 발생했던 여러 붕괴사례들은 기술혁신이 진행되면서 큰 관심사는 되지 못했던 것 같다. 끊임없이 향상되었던 해석이론 및 구조적 규모면에서 커다란 도약을 성취하였떤 이 시대에도 몇몇 중요한 교량 붕괴사례를 목격하였다. 특히 Tacoma Narrow Bridge의 붕괴가 발생한 후 구조물 붕괴사례에 대한 연구는 구조설계와 시공분야에서 공학적인 통찰력과 판단력을 위한 중요한 자료로 인식되어지게 되었다.

• 월간 기계설비
• /
• s.259
• /
• pp.50-57
• /
• 2012

기업의 경제위기 고통을 덜기 위한 정부의 '건설업계 행정제재조치 해제'가 단행됐다. 법무부는 지난 1월 12일 건설경기 진작 차원에서 건설분야 행정제재 3,742건을 해제하고 건설 관련법 위반으로 제재를 받은 건설업자도 특별사면했다. 이번 사면에서는 부실시공과 입찰담합, 금품수수는 제외됐다. 이번 행정제재조치 해제로 경영난에 시달려 온 건설사들의 제약이 다소 해소되고 건설업 관련 근로자들의 생계 위협이 완화될 것으로 기대된다.

• The Science & Technology
• /
• v.12 no.3 s.118
• /
• pp.41-43
• /
• 1979

아인슈타인은 시공간에 관한 우리의 상식과 개념을 송두리째 바꾸어 버린 특수상대성이론 등 6개의 과학학술논문을 발표함으로써 그후 100년간의 물리학의 발전에 결정적인 영향을 미쳤다. 한국과학사총회와 한국과학저술인협회는 3월 17일 학산기술도서관에서 아인슈타인 탄생 11주년 기념 강연회를 가졌다. 다음은 이날 가진 민영기국립천문단장(아인슈타인과 우주론), 김정흠고대교수(상대론이후의 물리학), 이초식건대교수(아인슈타인의 과학철학)의 강연요지이다.

• Journal of the Korean Professional Engineers Association
• /
• v.34 no.5
• /
• pp.29-33
• /
• 2001

This paper summarizes the design and construction of the roof canopy structure for the SEOUL 2002 World Cup Main Stadium with a design inspired by Korean traditional beauty emphasizing images of the Pangpae kite. The stadium has also been designed for maximization of its post-World Cup utility to be used on as every basis by the citizens. The stadium canopy is a unique spatial network of truss members with a tensile membrane roof suspended from 16 masts. The canopy covers 40,950 ㎡. which is clad with a pre-stressed tensile membrane of PTFE coated fiberglass fabric and the glass.