• Bulletin of Korea Environmental Preservation Association
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• v.28 s.361
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• pp.6-6
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• 2006

하수관거는 생활환경의 개선, 공중위생의 향상, 침수의 방지, 공공수역의 수질보전 및 건전한 물순환 등을 유지하기 위하여 반드시 필요한 도시기반시설이다. 우리나라는 도시민의 쾌적하고 안전한 생활을 확보하기 위하여 하수관거를 지속적으로 부설하였지만 '03년말 기준 전국의 보급률이 65.8%에 불과하고, 설치된 관거도 8.6m당 1곳이 불량하고, 하수관 유량의 31%가 침입수여서 하수관거 개선이 시급한 실정이다. 정부에서는 하수관거정비 종합투자계획을 수립ㆍ하수관거 개보수사업을 적극적으로 추진하고 있다. '07년까지 5조 6천억원을 투자하여 하구관거보급률을 75%수준으로 향상시켜 하수처리장 운영효율 제고 및 수계별 목표 수질 달성에 기여 할 것으로 전망하고 있다. 하수관거정비는 시민 및 사회단체의 환경을 향상시키는 반면에 많은 예산과 장기간이 소요되는 사업이다. 그동안 민간자본을 이용하여 하수처리장 건설 등 환경기초시설 설치 등에 활용되어 왔던 BTO 방식에서 탈피하여 BTL(건설-이전-임대)방식을 도입하여 추진하게 된다. 이에 본지에서는 하수관거정비사업의 현황, 향후 추진방향 등에 대하여 자세히 살펴 보고자 한다.

• Journal of the Korean Institute of Educational Facilities
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• v.21 no.2
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• pp.13-24
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• 2014

This study compared and analyzed middle and high school's homebase and media space which are installed along with the introduction of subject classroom system operation method, with regard to the position of arrangement, the type of arrangement, and the change of area, etc. which were changed and applied per the phase of project. For this, design competitions were implemented since 2006 targeting the cases which participated in design directly-indirectly in the researcher's architectural firm, present construction documents among the selected BTL(Build-Transfer-Lease) were completed, and the examples of 10 schools(design competitions 2 schools, BTL selected plans 8 schools) were analyzed, which were operating variation type.

• Journal of the Korean Institute of Educational Facilities
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• v.22 no.6
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• pp.35-39
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• 2015

• Korean Journal of Construction Engineering and Management
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• v.12 no.2
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• pp.32-40
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• 2011

The PPPs(public private partnerships) which was introduced in the later part of the 1990s has grown since 2005, with the beginning of BTL(Build Transfer Lease) type which retrieves the investment by receiving the lease payment from the government. As application areas and scale of the PPPs have been further expanded, it is expected the demand on special purpose facilities will be increased. We do know only successful foreign practices of the PPPs but have rarely consider the failure cases. Therefore, this paper derives implications by analyzing the case of National physical laboratory project which is known as a typical failure case of UK's PFI. We find that from the perspective of governance, the reasons leading to the failure of business are an insufficient of technical rationality, unsettled social relationships and inefficient risk management. Based on the case study, this study shows how to improve management system for special purpose PPPs business in Korea.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.36 no.6
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• pp.1133-1143
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• 2016

The purpose of this study is to improve project performance analysis indicators for BTL sewer rehabilitation projects. Among the assessment indicators for BTL sewer rehabilitation projects, an infiltration assessment indicator is given a high score of 17.5 points as a single assessment item. This infiltration assessment indicator is assessed focusing on the amount of infiltration, and presently calculated according to 'Nighttime Domestic Flow Evaluation' method. However, this assessment indicator's failure to reflect the geological features of Jeju region is emerging as a problem in the operational stage. Thus, this study intended to compare and analyze the calculation result depending on the assessment indicators and the actual amount of infiltration, centering on Jeju region. To this end, this study analyzed the amount of infiltration in five areas of Jeju Province calculated according to 'Nighttime Domestic Flow Evaluation' method. Also, a complete enumeration survey was carried out about the conditions for actual infiltration occurrence. According to the results of this survey, ground water level is distributed lower than the level of sewer pipes. The results of a sewer pipe function test show there was no infiltration occurrence caused by sewer pipe defect. So, it is concluded that 'Nighttime Domestic Flow Evaluation' method, which is utilized for the current assessment indicator, is not appropriate to apply to Jeju region, and it is thought that there is a need to establish infiltration criteria specialized for Jeju region.

• Journal of the Korea Institute of Building Construction
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• v.17 no.5
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• pp.473-481
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• 2017

With the barracks modernization project, the Ministry of National Defense has been operating 60 projects of the 75 that have been announced. It was difficult to investigate and analyze the data in the past because data could not be obtained while it was much easier to do that since data can be obtained from private companies. With the aim of increasing the usability of the facilities, the objective of this study is to present a reasonable alternative for repair and maintenance costs by investigating and analyzing the budget and the actual expenses of repair and maintenance of military facilities for the past 3 to 5 years, and then identifying the problems with these. To accomplish this, a theoretical review of previous studies and legal grounds related to repair and maintenance costs was performed, and data on the estimates and the actual expenses data used in BTL projects carried out by private companies were analyzed. First, one of the problems was that there are some items omitted, including consumables, and these items should be included in order to secure their budget. Second, in terms of the items for divided payments, two improvements had been presented: a short-term payment plan for the operation period of 3 to 5 years and a long-term payment plan for an additional and complemented period other than the operation period. The repair and maintenance costs should be further studied at the point of time in a future when the actual data on the costs and operation period of military facilities can be secured. This study is expected to serve as empirical data that will form the basis for a reasonable calculation of the construction cost for military facilities.

• Journal of the Korean Society of Radiology
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• v.85 no.1
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• pp.171-183
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• 2024

Purpose This study aimed to investigate which indirect parameters on preoperative MRI were the principal predictors of subscapularis tendon tears (STTs) requiring surgical repair. Materials and Methods Preoperative MRI scans of 86 patients were retrospectively reviewed for visual assessment of the STT, pathology of the long head of the biceps tendon (LHBT), posterior decentering (PD) of the humeral head, humeral rotation, fatty degeneration, and subscapularis muscle atrophy. To evaluate atrophy, visual grading using the anatomical line connecting the coracoid tip to the glenoid base, designated as the base-to-tip line (BTL), and thickness measurements were performed in the en-face view. Results Arthroscopically, 31 patients (36%) exhibited Lafosse type III or IV STT and underwent surgical repair. LHBT pathology (p = 0.002), PD of the humeral head (p = 0.012), fatty degeneration (p < 0.001), and BTL grade (p = 0.003) significantly correlated with STT. In the multivariate analysis, PD of the humeral head (p = 0.011, odds ratio [OR] = 5.14) and fatty degeneration (p = 0.046, OR = 2.81) were independent predictors of STT. Conclusion PD of the humeral head and fatty degeneration of the subscapularis can help to diagnose clinically significant STT. Interpretation of these findings may contribute to the planning of an optimal surgical strategy.

• The Journal of Sustainable Design and Educational Environment Research
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• v.8 no.1
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• pp.11-22
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• 2009

School is a basic and the most fundamental facility of city planning just like other basic public facilities including the village office. Every plan is established on the basis of school. However, the problems such as the population reduction resulting from the nuclear family-zation and low birth rate, employment and welfare of the aged people resulting from "the old aged society", and the infant nursing and education resulting from a rapid increase of the working couples become notable and accordingly more requirements are being made. Reflecting this trend, the concept and operation system should be changed. Up to now, the BTL projects of the educational facilities are gaining a reputation of being efficient in terms of national budget running, but at the same time receiving negative reputation in terms of budget saving under the civil creativity and efficiency. Through upgrading the private sector investment projects into the BTO+BTL system and further into the BTO(Build Transfer Operate), we can accomplish the original goals of the private sector investment projects, and can make the education budget operation more efficient, and can greatly improve the education environments. However, we should not underestimate in this process that these facilities should not negatively affect the education environments. In any situation, the owners of schools are students.

• Journal of the Korea Institute of Building Construction
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• v.13 no.5
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• pp.506-512
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• 2013

Since the amendment of the law on the private sector investment in social infrastructure in January of 2005, the government has been actively promoting Build-Transfer-Lease (BTL) projects. Notably, most new educational facilities have been built as BTL projects. For these facilities, the unit cost per unit area has been applied to predict construction costs. However, since construction costs are mostly managed after the detailed design phase, the costs can be estimated incorrectly. For this reason, cost management is needed in the planning phase, with a sound approximate estimate to prevent the wasteful use of funds. To address this shortcoming, this study aims to develop a quantity prediction model for education facilities using regression analysis in the planning phase. The developed model is focused on the required quantities of reinforced concrete and bricks. In order to achieve the objective, the data of 44 educational facility projects collected from Gyeonggi-do was used in the regression model. This study can be utilized by major stakeholders to accurately predict construction costs by estimating the appropriate quantities of reinforced concrete and bricks in the planning design phase.

• Journal of The Korea Institute of Healthcare Architecture
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• v.14 no.2
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• pp.53-64
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• 2008

This study is the architectural planning of 5 distribution supporting facilities for traditional herbal medicine cultivated in the rural areas. The main function of the facility consists of storage, pre-treatment/processing, loading/unloading and the assistant function consists of inspection, office, exhibition/sale, technical equipment etc. The planning shows the modular plan and the section plan of the storage space reflecting the shape and size of storage container, the action radius of carrier and the possibilities of space lease. The total floor area of the storage is 3,192$m^2$ consisting of 27 space. The total floor area of the pre-treatment/processing is 1,488$m^2$ consisting of 7 space. The total floor area of the loading/unloading is 329$m^2$ consisting of 4 space. The total floor area of each facility storage is 8,284$m^2$ including of public space 2,170$m^2$. Also this planning shows the preliminary design, "fundamental model design" for 5 rural government BTL project. Therefore, this result of planning will be the guidelines of the RFP(Request For Proposal) for the private sector company interested in this BTL project.