• Title/Summary/Keyword: 토목공사

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Comparative Analysis on Unit Price based on Historical Cost Data Estimating for Large and Small-scale Civil Engineering Works (대·소규모 토목공사의 실적공사비 비교 분석)

  • Hong, Sung Ho;Shin, Juyeoul;Kim, Chang Hak;Lee, Dong Wook
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.33 no.4
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    • pp.1707-1718
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    • 2013
  • Historical cost data estimating system has been introduced since 2004 in the construction industry. Based on contract prices of past projects, this estimating system estimates construction cost according to work types. The Korea Institute of Construction Technology (KICT) announces the historical cost data twice a year annually. The unit price of a small construction project is higher than large construction project due to the increase on production cost per work unit, equipment and labor cost, etc. However, the historical cost data estimating system is applied to project estimation uniformly regardless the construction project's size. This study compared and analyzed the historical cost data of large and small construction project to indicate the problem of historical cost date estimating system. The study derived that the unit price of a small construction project is 21.8% higher than that of large construction project.

Development of an Approximate Cost Estimating Framework for River Facility Construction at Planning Stage (하천시설물 공사의 기획단계 개략공사비 산정체계 개발)

  • Shin, Jung Min;Woo, Sungkwon;Lee, Si Wook;Kim, Ok Ki
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.28 no.3D
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    • pp.371-381
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    • 2008
  • The systematic methodology for estimating construction cost approximately at planning and pre-design phase of a river facility construction project has not yet been established because of its unique characteristics including its relatively small project size in terms of cost. This research suggests a 4-level cost information structure and identifies critical factors affecting construction cost as a result of thorough analysis of accumulated historical cost data of river facility construction projects. Also, this research presents the framework of the approximate cost estimating methodology for river facility construction project a planning stage.

BIM Application for Civil Engineering Project in Planning and Design Phases (토목공사 기획 및 설계단계의 BIM 적용방안 연구)

  • Kang, Leen-Seok;Kim, Seol-Gi;Kim, Hyeon-Seung;Moon, Hyoun-Seok
    • Journal of KIBIM
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    • v.1 no.1
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    • pp.26-31
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    • 2011
  • Due to the characteristics of 3D objects of building construction projects which have regular, vertical and repetitive shapes, the most practical utilization of BIM in the country is focused on building projects. The characteristics of 3D objects of civil engineering project have irregular, horizontal and non-repetitive shapes. Therefore, consisting of a practical BIM model is difficult comparing with building project. This study suggests an application process of BIM for the planning and design phases for civil engineering project. A BIM system is developed based on suggested BIM process and it is verified through a bridge construction project.

지오텍스타일의 노출환경에 대한 안정성 평가

  • 전한용;정진희;김흥관
    • Proceedings of the Korean Fiber Society Conference
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    • 1998.10a
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    • pp.356-359
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    • 1998
  • 지오텍스타일은 수분차단을 제외한 분리, 보강, 여과 배수등의 기능을 가지며, 현재 제방공사, 해안ㆍ하천의 호안공사, 간척공사 또는 도로, 철도 노상 안정 등의 분야에 광범위하게 이용되고 있다. 또한 지오텍스타일은 모래, 흙, 자갈 등의 환경에 노출, 사용되는 고분자 재료로서 토목공사의 시공기술과 밀접한 관계를 가지는 토목용 섬유제품이다. (중략)

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Project Informations Classification System for Civil Works (토목공사용 정보분류 코드체계의 개발)

  • Lee, Bae Ho;Kang, Leen Seok
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.14 no.4
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    • pp.897-905
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    • 1994
  • Project Informations Classification System (PICS) can be utilized as a springboard for advanced construction management techniques because it marries informations to networks and maintains a disciplined cost control. The present study attempts to develop a PICS which can be applied in construction management techniques. The frame work largely consists of the three parts such as: (i) development of the tentative Work Breakdown Structure with three divisions, facility calssifications, functional classifications and work classifications, covering the whole areas of civil works, (ii) development of the integrated informations system including the other informations in cost estimating and network scheduling, (iii) construction of relational database system for computer application. The system suggested in the study is found useful for the systematic and uniform management of construction works in the various stages.

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Development of Construction Site Monitoring System Using UAV Data for Civil Engineering Project (UAV를 활용한 토목공사 현장 모니터링 시스템 개발에 관한 연구)

  • Jeong, Juseok;Han, Seonju;Kang, Leenseok
    • Korean Journal of Construction Engineering and Management
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    • v.18 no.5
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    • pp.41-49
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    • 2017
  • The ordering organizations of civil engineering project manage the construction site indirectly because the construction site is mostly located at a remote location and the public official also manages many sites. Since the civil engineering project has a wide working area, it is not easy to know the status of the whole project quickly by the indirect management method by report of the field practitioner. In order to solve these problems, the field management system between the ordering organization and the field office is changing from offline to online. This study suggests an advanced construction site management system that obtains site-related 3D information with the use of UAV and shares the information between the construction site in remote locations and their supervising authorities. To develop an UAV application system, the problems of field management in many actual sites were analyzed and derived necessary functions such as status reporting and online information management. The developed system was applied to actual field to verify its usability and compared the efficiency improvement with existing field management method.

Case History of Sea Dyke Construction Using Geotextile Mat (토목섬유매트를 활용한 호안축조공사 사례 연구)

  • Park, Jeong-Jun;Kim, Sung-Hwan;Shin, Eun-Chul
    • Journal of the Korean Geosynthetics Society
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    • v.7 no.2
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    • pp.7-13
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    • 2008
  • Geosynthetic damage has attracted a major attention since the introduction of geotextiles for civil construction applications. Geotextile is one of the most useful and effective polymer material in civil construction works and the main function of geotextile is separation, reinforcement, filtering and drainage. Recently, because of the shortage of natural rock, traditional forms of river and coastal structures have become very expensive to build and maintain. This study tries to suggest the method of estimating valid stitching rate and the methodology of sea dyke construction over soft soils for more reasonable application of geotextile mat by studying tensile strength, bursting strength, punching strength, tear strength that are considered when analyzing and designing geotextile mat of a field.

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A Study on a Systematization of Preliminary Construction Control for the Quality and Schedule Management of APT Construction (품질확보 및 공기지연예방을 위한 공사관리 체계화에 관한 연구)

  • Park, Hong Tae;Lee, Yang Kyoo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.28 no.3D
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    • pp.347-353
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    • 2008
  • Generally speaking, it is important to know the activities itself exactly and to control the activities correctly so as to assure timely progress and the quality of any project. In order to progress smoothly in accordance with construction schedule, it is important to systematize the preliminary arrangements necessary for each process and then manage them. In this study, in order to progress smoothly the quality and schedule management of the construction, we can be made systematically pre-works in accordance with construction schedule by the civil construction items of the apartment house construction. we suggested pre-construction control item by the workers through experiential method of construction engineers in accordance with network schedule.

Masjed-e-Soleiman Hydroelectric Power Project (이란 카룬댐 프로젝트 콘크리트 공사)

  • 김종오;노승규
    • Magazine of the Korea Concrete Institute
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    • v.14 no.4
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    • pp.72-81
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    • 2002
  • 대림산업(주)는 이란 에너지성 산하의 수전력 개발공사가 발주한 이란내 최대의 토목공사로 관심을 끌어온 카룬댐 공사(Masjed-e-Soleiman Hydroelectric Power Project)를 미화 4억6천4백만 달러에 수주하여 1994년 12월 착공한 후 6년 반 동안의 공사 끝에 지난 2001년 4월 19일 완공을 하게 되었다.(중략)