• Journal of KIBIM
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• v.8 no.1
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• pp.56-62
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• 2018

There exists no precedented case of quantity take-off, using parametric modeling, from BIM-based irregular structures. Civil 3D provides earthwork quantity take-off based on surface modeling. Generally, designers should enter data into the specification additionally after extracting quantity estimation from earthwork modeling design. The objective of this report is to suggest the method from quantity take-off to specification of BIM-based earthwork quantities. We intend to investigate earthwork take-off method by Civil3D and explain why parametric information extraction is required for quantity estimation and specification and how information of earthwork quantity based on solid and surface modeling is connected to open quantity take-off module. It is highly expected that this suggestion would be the practical methodology of earthwork quantity take-off and specification in the field of civil engineering.

• Journal of the Korean GEO-environmental Society
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• v.17 no.7
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• pp.35-42
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• 2016

There are many reclamation projects domestically and internationally which requires large quantity of reclaimable materials. To provide enough reclaimable soils which are limited in land, there have been various research focusing on the dredged soils in the marine environments. As a part of this research, a GIS based 3D dredging reclamation visualization program was developed for the volume estimation of dredged soils in 2015. The developed program is based on the digitized spatial information of the site investigation data with a consideration of the reliability of the data. Prior to the validation with the comparisons with the actual dredged volume measurement data, the developed program was compared with the commercial 3D visualization program with 3D visualized results from the test site near the Gunjang harbor. The validation of the developed program was performed in terms of the degree of visualized precision, the sectional and profiling of soil layers and the dredged volume estimation results. Based on the comparisons, both commercial and developed program show similar dredged volume with minor discrepancies in soil layers.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.33 no.1
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• pp.35-44
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• 2020

In the construction industry, there is a growing demand for the accurate calculation of the quantity take-off and construction budget at the design stage, and it is likewise important to grasp changes in the construction budget and quantity take-off if design alterations are made. In addition, lawsuits related to the quantity take-off and cost of construction are frequent; therefore, the calculation of these factors using building information modeling (BIM) has emerged as an alternative. However, existing 2D-based methods are still used more frequently than BIM-based methods for quantity take-offs and construction budgets. This is because of the lack of BIM experience of estimation workers and the absence of a national standard. However, from a designer's point of view, it is necessary to understand the quantity take-off and construction cost based on BIM and accurately create the design according to the budget. In this study, the quantity take-offs of concrete, rebar, and reinforced concrete structures (apartments) in Seoul and Yeongjong were compared with the quantity take-offs based on 2D and BIM methods. From the viewpoint of the designer, we aim to increase the accuracy of BIM-based quantity take-offs.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2000.10a
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• pp.360-363
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• 2000

This Paper propose the system which introduces GIS user interface method to existing electronic commerce. While existing system provided text-oriented information, our system can provide complex information cleary at a glance using character, picture and location data.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1311-1314
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• 2006

원자력 시설 및 연구용 원자로 해체 시 해체 공정의 효율성을 증진시키기 위해 컴퓨터 그래픽스를 이용한 해체 공정의 최적화 연구가 수행되었다. 애니메이션 설계를 위해 해체 시설 및 구조물과 해체 장비의 모델링이 완료되었으며, 방사능에 오염된 대상물의 방사능 분포도를 위치별, 준위별로 확인할 수 있도록 3 차원으로 나타내었다. 해체 일정과 해체 폐기물량 그리고 해체 비용을 모사하기 위해 각 정보들에 대한 평가식과 가중치 값을 도출하였다. 연구로 1 호기 Thermal column 을 대상으로 애니메이션을 통한 해체 공정절차 시각화와 단위 해체 공정 시나리오를 수행한 결과 애니메이션의 경우 해체 현장과 동일하게 모델링 되어 현장 작업자들이 해체 공정 절차를 쉽게 이해할 수 있다는 것을 확인하였으며, 시나리오 별 해체 소요시간과 폐기물량 그리고 해체 비용의 경우 정상적으로 모사가 수행됨으로써 단위 해체 공정에 대한 최적의 시나리오를 평가 할 수 있는 기초 연구의 틀을 마련하였다. 본 시스템은 해체 관리자, 해체 시스템 분석가, 해체 현장 감독과 해체 작업자들의 중요한 협업도구로 활용될 것으로 사료된다.

• Journal of the Society of Naval Architects of Korea
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• v.54 no.1
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• pp.57-62
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• 2017

These days, shipbuilding companies are making an effort to adopt the IT technology in order to improve the production efficiency. One such effort is to utilize a planning and scheduling system to predict the production cost in advance. In this system, assessing the welding material quantity is an important factor. Unfortunately, obtaining the welding material quantity in the early design stage is extremely difficult because the detailed production information, which is essential in deriving the cost associated with welding, is normally available at a later stage. This paper aims at developing a computerized program that produces an index to estimate the welding material quantity in the early design stage. By using only three-dimensional geometric information, the program analyzes the production process and estimates the welding material quantity at any design or production stage when no production information is available. The results can be used for the planning and scheduling system.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.738-743
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• 2008

Recently BIM is utilized to improve productivity for Life Cycle Cost of construction projects. Therefore, the establishment of BIM process by each construction project is a necessary element. However, cases and the pertinent researches that BIM process by each project is established are still not enough in Korea. The study proposed construction of BIM process through how to set up BIM application, how to organize a BIM team, how to set up a family and modeling method in the early stage. To achieve the purpose, the study examined application ability of BIM process by carrying out basic setting and modeling work through pilot study model, examination of the amount of materials and information interchange with IFC. The study attempted making a foundation of domestic BIM guideline construction through the above examination.

• Korean Journal of Construction Engineering and Management
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• v.4 no.3 s.15
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• pp.137-145
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• 2003

The project control system based on the actual values of three objects shall be operated continuously in a timely manner. For collecting/tracking accurate actual performance data, a reasonable basis of measuring work performance and its related measuring methods are needed. Therefore, this research proposes a method of developing and operating the construction progress measurement system. The problem of the conventional method is the difficulty to construct control accounts and to define the basis of measuring the performance of each control account. Therefore, this research proposes the preferable, formal methodology that produces the progress value of the smallest work unit by surveying the installed quantities and estimates percent complete of groups of works or entire project by earned value concept. This research in connection with the hereafter research of the weight value of control accounts will contribute to apply in practice and to develop the scientific construction management technique in the construction industry. Further researches how to trend and forecast the project using the measured progress value are recommended for putting the prosed system of this research to practical use.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.10a
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• pp.445-448
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• 2000

웹기반 우편물류 모니터링 시스템은 우편물류처리의 효율적인 인프라를 제공하는 통합 우편물류 실시간 관제시스템의 핵심 구성요소로서, 우편집중국-운송교환센터 중심의 체제에서 우편물량 정보와 우송경로 및 차량추적 정보를 실시간으로 웹을 통하여 제공한다. 이 논문에서는 웹기반 우편물류 모니터링 시스템의 세부기능과 구조 및 환경에 대하여 설명한다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10c
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• pp.176-178
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• 1999

우편 처리상황 실시간 모니터링 시스템은 우폄 물류처리의 효율적인 인프라를 제공하는 통합 우편물류 실시간 관제 시스템의 구성요소로서, 우편 집중국 및 운송교환센터를 대상으로 우편물량 정보와 운송경로 및 차량추적 정보를 실시간으로 제공한다. 이 논문에서는 우편 처리상황 실시간 모니터링 시스템의 세부 기능과 구조 및 성능에 대하여 설명한다.