• 한국환경과학회지
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• 제11권3호
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• pp.161-168
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• 2002

This study was carried out for reading the change of local meteorological environment according to dam construction of Nakdong-river using meteorological data analysis, and modeling. The meteorological data analysised are mean temperature, foggy day, precipittion day and sunshine time. As tile result of analyzing meteorological data of before and after the construction of dam in Andong and Hapchon, some discrepancy were observed by month because the lakes have different effect on the region as wind field. The common phenomenons that are revealed after dam construction are increase of foggy day and decrease of sunshine time.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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• pp.433-436
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• 2008

A demand on the spatial data management has been rapidly increased with the introduction and diffusion process of ITS, Telematics, and Wireless Sensor Network, and many different people use the digital map that offers various thematic spatial data. Spatial data for digital map can manage to tile-based and feature-based data. The existing tile-based digital map management systems have difficult problems of data construction, history management, and updating based on a spatial object. In order to solve these problems, this paper proposed the data model for the feature-based digital map management system that is designed for feature-based seamless map, history management, real-time updating of spatial data, and analyzed the validity and utility of the proposed model.

• KIEAE Journal
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• 제17권1호
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• pp.15-21
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• 2017

Purpose: This study was on the economic feasibility of BIPV system, focused on comparison with construction cost of BAPV system depend on roof finishing materials, and to suggest basic data on the construction cost. Method: Construction cost of BAPV system was calculated, by selecting asphalt single, flat type roof tile, color steel plate, titanium zinc plate as roof finishing material of residential building and by sum up each cost for roof finishing construction and cost for 3kWp-volumed PV module installation. Also, the economic feasibility was analysed quantitatively by comparing the cost for BIPV system construction, installing same volumed PV module instead of roof finishing materials. Result: 1. By installing BIPV system instead of the roof finishing material, the cost of construction falls ; about 19% in case of the titanium zinc plate, which is the most expensive, and about 11% in case of the color steel plate. 2. Reducing amount of the construction cost gets larger because of installing BIPV module instead of the roof finishing material, as the construction cost for roof finishing material gets higher ; therefore, it is more economical than BAPV system in terms of whole cost of construction.

• 한국건설관리학회논문집
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• 제8권6호
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• pp.150-158
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• 2007

지구온난화를 일으키는 주요 온실가스가 이산화탄소임이 공표되고, 이의 배출 감축을 유도하기 위한 국내외적 규제가 강화됨에 따라 국내 건설산업에서도 생산과정에서 배출되는 이산화탄소량을 줄이기 위한 노력이 절실히 요구되고 있다. 이의 일환으로서 본 연구는 심각한 이산화탄소 배출원 중 하나인 건설폐기물에 대해 전과정평가(LCA)를 수행하여 건설폐기물로 인해 배출되는 이산화탄소의 특성을 파악하고, 그 결과를 토대로 건설현장에서 이산화탄소 배출량을 효과적으로 줄일 수 있는 폐기물 관리방안 수립 기준을 제시하고자 하였다. 전과정평가(LCA) 결과, 자재별로는 철근류, 가설자재류, 시멘트류, 레미콘, 콘크리트 제품, 타일 등의 자재가 폐기물로 인한 전체 이산화탄소 배출량 중 95% 정도를 배출하는 것으로 나타났다. 이들 자재의 이산화탄소 배출량이 많은 원인은 폐기물 발생량보다는 자재 생산에 필요한 단위 이산화탄소 발생량이 높기 때문인 것으로 분석되었다. 공종별로는 철근콘크리트공사, 미장공사, 가설공사 등과 같이 전체 공정 중 초중반에 걸쳐 수행되는 공종에서 발생하는 이산화탄소 배출량이 전체 공종 중 92% 이상 차지하는 것으로 조사되었다. 반면, 폐기물 관리자들은 공정 중후반에 수행되는 마감공종의 폐기물 관리에 집중하고 있어서 폐기물로 인한 이산화탄소 배출량 증가 원인 중 하나로 작용하고 있음을 파악하였다. 또한, 전과정평가(LCA) 결과를 반영한 폐기물 관리방안 수립 기준을 제시함으로써, 건설현장에서 폐기물 관리방안 수립 시 활용할 수 있도록 하였다.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2002년도 가을 학술발표회 논문집
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• pp.749-754
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• 2002

In this study, it is investigate to influence on tile dispersion of fiber and the flowability of matrix of type and amount of superplasticizer, velocity agent, mineral admixture and steel fiber to improve for construction performance of steel fiber reinforced cementitious composites. As for the test results, it was found that the dispersion of fiber and the flowability of matrix in steel fiber reinforced cementitious composites can improve by using of properly amount and combination of superplasticizer, velocity agent, mineral admixture. Furthermore, It show that the aspect ratio of steel fiber affect the construction performance of fiber reinforced cementitious composites, and the improvement for construction performance is the more effective the smaller aspect ration of steel fiber.

• 기술사
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• 제16권1호
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• pp.13-19
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• 1983

As one of staff members participated in the full course of the plant construction project of On-san Refinery to its successful completion. I had my past expierence that the plant construction project was so complicated, and a Long period required, and thus there were so money problems to be solved. Among the problem, I mainly noticed that the following listed points were solved and improved. 1. Each drawing should be in every accuracy possible. 2. Contract should be specified in every detail possible. 3. All invoiced prices of breack down list should be coped with the current market prices. 4. All execution of work should be in the most accuracy. A. Planing execution of work. B. Coordination with supervisor group. C. Economical method for execution of work. D. Safety control. 3, Calculation work field should be established seperately 6. Each staff members should be work at the best of his pride.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 춘계 학술논문 발표대회
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• pp.186-187
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• 2014

The principal government building of Kyungsanbuk-do was designed to show korean traditional architecture with tile-roofed house to reflect the image of Kyungsangbuk-do as the province of traditional culture. The roof of korean traditional architecture is the most importanat part that distinguishes the design character of a building and is important to determine degree of completion. As this is so, in the design phase, we reviewes the design documents about the proportional and slope of the roof, durability and sizes of component material and the structure of eaves. In the construction phase, it was required to cooperated with specialists of traditional architecture for realization of traditional beauty of the buildings as designed.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1991년도 봄 학술발표회 논문집
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• pp.56-60
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• 1991

Free Cantilever Method(FCM) is one of the most effective construction methods when precast prestressed concrete box girders are erected in the construction site. The special feature of FCM is that precast segments are erected in cantilever on the pier and connected in the middle of span to form the complete superstructure. Therefore each structural subsystem will be shown in each construction step and it should be analyzed for design whenever the segment is erected. In this study, the computer program was developed to optimally design the P.C box girder bridge considering tile construction sequence and verified by comparing the calculated results with the data of existing P.C box girder bridges. the sensitivity analysis was performed to show the efficiency of the developed program.

• 상하수도학회지
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• 제20권6호
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• pp.919-926
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• 2006

In this study, environmental impact assessments of wastewater treatment plant (WWTP), sewerage system, and tailrace were performed using LCA methodology. The life cycle stages were divided into 3 categories; construction stage, maintenance stage and demolition & disposal stage. As a tool of impact assessment, Ecoindicator99 containing fate analysis, exposure & effect analysis and damage analysis, was used. As tile results of WWTP LCA, more than 80% of environmental impact was produced from maintenance stage. On the other hand, most of environmental impact was produced from construction stage in the case of tailrace and sewerage system construction.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.556-560
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• 2004

최근 건설 계획이 증가함에 따라 건물 신축과 건물 폐기에 의한 건설 폐기물이 빠르게 증가하고 있다. 이로 인한 문제점으로 신축에 의해 발생되는 건설 폐기물의 처리를 매립에 대부분 의존하고 있기 때문에 환경오염 문제가 발생과 환경 단체의 반대에 천연골재 채취를 제한하고 있어서 건설업계에서 골재 부족문제가 대두되었다. 따라서 연구 단체에서는 이 두 가지 문제에 대한 해결방안으로 순환골재가 제시되고 있다 하지만 건설 현장에서는 거의 사용되지 않고 있다 이에 본 연구에서는 순환골재가 사용되지 않는 이유를 경제적인 면, 제도적인 면, 기술적인 면으로 분석하고 각 측면에서 순환골재의 활용화 방안에 대해 제시하고자 한다. 이를 통해 골재부족 문제해결과 폐기물의 매립에 의한 환경오염의 경감을 기대할 수 있을 것이다.