• 한국BIM학회 논문집
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• 제9권3호
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• pp.30-40
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• 2019

Extraction of fabrication documents is very important because it provides information related to tasks of fabrication and construction. Therefore, in the case of a prefabricated member such as a steel structure, it is necessary to improve the productivity of fabrication documents through 3D BIM. However, research and evidence data on direct comparison analysis of 3D BIM-based documents extraction versus 2D CAD-based documents extraction are hard to find. Thus, this study focuses on productivity analysis of 3D BIM based fabrication documents extraction. In this study, the productivity data of fabrication documents extraction for module construction of EPC project was analyzed. For the productivity analysis, a case study on the fabrication documents of Module A (1,965 sheets) and Module B (1,216 sheets) was conducted. Fabrication documents for each module include general arrangement drawing, assembly drawing, single part drawing and single plate drawing. Comparison of 2D CAD based fabrication documents extraction and 3D BIM based fabrication documents extraction, the productivity for the entire work was improved from 17 hours to 16 hours for Module A and 12 hours to 7 hours for Module B. Especially, the productivity of the assembly drawings, which occupies a large part of the fabrication documents, was improved by about 48.75% from the total time required from 281 hours to 144 hours.

• Journal of Welding and Joining
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• 제34권1호
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• pp.47-53
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• 2016

WPS/PQR is the essential documents for shipbuilding welding. WPS is the document containing the information related to welding procedure and PQR is the record of approval for welding procedure. Both documents should be approved by the ship owners and the classification societies. It is very important to manage these documents because the welding procedure using these documents could not be carried out before they are approved. Database is an useful tool to manage these documents. It can manage a number of documents and show the processing status of WPS/PQR documents. In this study, all documents related to WPS/PQR documents were investigated and analyzed in the viewpoint of DB. An appropriate DB system was designed for WPS/PQR and the related documents on the basis of CBD methodology. The DB system could make WPS/PQR documents easily and shortly. The grasp of the processing status of WPS/ PQR could help the good management of fabrication schedule in shipbuilding.

• Steel and Composite Structures
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• 제5권2_3호
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• pp.169-180
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• 2005

Current codes of practice do not exist in isolation, and rules that have been developed assume certain material properties and minimum workmanship in fabrication and erection. These are either in separate documents or different parts of the code. This paper explains the main requirements for materials and workmanship and how they can be related to design and construction in general. The use of very high strength steels is also considered and the measures that may be needed to allow their use with modern codes are also presented.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2007년도 추계학술대회
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• pp.444-448
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• 2007

이차원바코드 기술과 암호화 알고리즘을 이용하여 문서의 위${\cdot}$변조 등을 방지하고 문서의 상태를 기업체나 공공기관 등에서 쉽게 확인하여 판단할 수 있는 시스템을 제안한다. 모든 위${\codt}$변조 확인이 필요한 문서에 암호화된 이차원바코드를 첨부한다. 확인자 측에서는 첨부된 이차원 바코드를 바코드 리더기로 인식하거나 이차원 바코드의 사진을 관련 인터넷 웹 사이트를 통해 문서의 위${\cdot}$변조를 판단한다.

• 비파괴검사학회지
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• 제21권5호
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• pp.561-564
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• 2001

연구로인 하나로의 핵연료봉은 제조 시 피복층에 품질 관리 절차에서 규정한 크기 이상의 결함이 없도록 와전류탐상 검사를 하도록 되어 있다. 와전류탐상검사 절차를 수립하기 위하여 외삽 차동형 와전류탐촉자 및 표준시험편을 제작하였다. 임피던스 분석기를 사용하여 제작된 탐촉자에 대한 임피던스값을 측정하여 검사주파수 영역에서 최대감도를 얻도록 제작되었는지를 조사하였고, 이 탐촉자 및 MIZ-40A 와전류탐상기를 사용하여, 요구되는 결함 크기를 검출할 수 있는가를 조사하였다. 그 결과 이 탐촉자를 사용하여 길이 2mm 피복 두께 대비 깊이 10%인 인공 노치를 검출할 수 있었으며, 연구로용 핵연료봉의 제조 시 피복층에 존재하는 결함을 성공적으로 검사할 수 있었다.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.30-37
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• 2020

In the building construction, the steel-frame work occupies an important position in terms of structure, cost and quality. Especially in Japan, steel frames have traditionally been the main structure of many buildings. For steel-frame works in such positions, this paper investigates an existing steel fabricator to clarify the actual conditions of design decision making process and management method in steel production process. This study focuses on a steel fabricator (Company M in the following sentences), whose main market is Japan and which has facilities in Thailand, China, and Japan. Company M uses QR codes to control the production status of products, and exchanges all information between inside and outside the company via specialized departments in the form of documents. The authors have already analyzed the relationship between production lead time and defect rate based on actual project data at Architectural Institute of Japan in 2016. In 2019, we expressed the process from the confirmation of the design information of the current steel frame to the production by WBS, and clarified the relationship between the production lead time and steel frame product quality structurally. In this paper, the authors reoport the progress of the survey conducted so far, the positioning of the collected data, and the future survey policy.

• 건축역사연구
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• 제28권6호
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• pp.43-54
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• 2019

The grade of East Asian architecture is generally classified by the size, the shape of the roof, and the type of bracket set. The craftsmanship of columns, beam, purlin, stylobate, column base stone and paintwork is also a contributing factor for such classifications. These classifications can be found not only in historical documents such as 「Oksajo(屋舍條)」 of 『Samguksagi(三國史記)』 but also in 「house details regulations of residential architecture(家舍規制)」 of Joseon Dynasty. However, there are differences in detailed designs among the same grade of architecture regardless of the classification. In this research, the Palace, the Royal Residence(宮家), and the Jaesil(齋室) are considered as the Palatial Buildings and Royal Residences. And the advanced architectural o details which appear only in the Royal Architectures are defined as the 'The Architectural Crafts as a Code of Manners'. The Architectural Crafts as a Code of Manners is detailed design, which can be seen as fabrication of materials and supplementary factors. The Architectural Crafts as a Code of Manners used in the Palatial Buildings and Royal Residences reveal the types and their historical changes. This research will present a basis for the repair and restoration of cultural heritages to be carried out in the future, and also prevent them from further damages, thus help to preserve the cultural heritages.

• 헤리티지:역사와 과학
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• 제47권2호
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• pp.86-113
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• 2014

본 연구는 고문헌 분석을 통해 조선시대 취병의 특성과 제요소를 분석하고 주합루 취병의 원형적 물상을 고찰한 것으로서 다음의 결과를 도출하였다. 첫째, "임원경제지", "증보산림경제" 등의 문헌분석결과 취병은 지지대의 종류, 식물소재, 식재형식에 따라 분류되었다. 지지대는 대나무, 진장목(眞長木), 기류(杞柳)에 따라 분류되며, 사용된 식물소재는 소나무, 주목, 측백나무 등의 상록침엽교목의 사용이 우세했다. 식재방법은 자연지반에 심는 것이 일반적으로 나타났으나, 분을 사용하여 인공지반에도 조성하였다. 둘째, 문헌에서 취병은 상록수를 사용한 식물 병풍에서만 사용된 용어였으며, 이의 상위범주어는 '병(屛)'으로 지시되었다. 즉 취병은 사계절 푸른 상록수의 특성을 일컫는 '취(翠)'와 대나무로 지지대를 만든 수벽 구조물인 '병'을 합성한 말이다. 또한 취병이라는 명칭에는 자연 산수를 묘사하는 문학적 상징성과 무산십이봉에 내재된 신선사상이 융화되어 있었다. 셋째, 1880년대에 촬영된 주합루 취병은 주목으로 보이는 침엽수로 이루어져 있었으며 높이가 거의 2m에 달했다. 일제강점기 때 취병은 철거되었으나 취병의 소재로 사용된 주목이 몇 주 존치되어 있었고, 식재 시기가 불분명한 향나무가 어수문 양 옆으로 줄기를 늘어뜨린 채로 가꿔지고 있었다. 이 향나무는 한일병합 후 일본인에 의해 이입된 것으로 추정되는데, 같은 시기에 어수문 좌우 협문이 변형되어 일본 건물의 합각모양을 한 지붕이 씌워졌던 것으로 판단된다. 넷째, 2008년 창덕궁 주합루 취병은 복구되었으나, 정밀한 고증의 부재로 원형적인 취병과는 거리가 멀었다. 특히 식재된 조릿대가 동해를 입어 상당 부분 고사됨으로써 취병이 제 기능을 못하고 있는 바 가능한 본래의 식물소재를 사용하여 원형을 살리는 노력이 필요하다. 또한 취병 제작기술의 개발, 현대 조경에 응용하는 것은 과제로 남아있다.