• Title/Summary/Keyword: Military building

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(A Study on the Priority Determination for Building Army Future Combat System) (육군 미래전투체계 구축을 위한 우선순위 결정에 관한 연구)

  • Seo, Yong-Chae;Song, Young-Il
    • Journal of the military operations research society of Korea
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    • v.35 no.1
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    • pp.33-49
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    • 2009
  • At the long period of time, Many powerful countries are going to prepare on building Future Combat System(FCS). R.O.K. Army also have to prepare for Future Combat on the line of Military Transformation. First, This paper presents the reason for building R.O.K. Army FCS. Second, R.O.K. Army could get good use of Master Plan frame for FCS enterprise as apply to this paper that FCS consist on an individual combat system for the priority of determination by Analytic Hierarchy Process(AHP)

Causes of Change Orders in the Military Facility Construction Projects and Suggestions for Improvement (군사시설 건설사업의 설계변경 요인분석 및 개선방향)

  • Lee, Kyoung-Han;Choi, Jong-Soo
    • Journal of the Korea Institute of Building Construction
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    • v.13 no.3
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    • pp.263-271
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    • 2013
  • Change orders have been widespread in both the private and public construction sectors. In particular, in the case of G2B (Government to Business) contracts, adjustment of contract price and/or schedule extension is a frequent occurrence due to change orders. To uncover the causes of change orders and suggest an appropriate strategy, this study analyzed 296 cases of change orders in military facility construction projects from 2008 to 2010. The analysis revealed that the major causes of change orders are users' additional requirements (28.38%), a change of finishing materials (23.99%), and change of footing type (17.57%), in that order. Building on the results of this analysis, the authors suggest plans for practical improvements. Specific recommendations include 1) reflect user requirements at the early stage, 2) minimize the use of additional budget due to change orders, and 3) reduce the process and time for contract amendment, among others. The results of this study may provide significant implications to those involved in military construction projects, particularly project owners (i.e., the Ministry of Defense) and contractors.

A Model for Optimizing Configurations of the Elevator Systems (엘리베이터 시스템 설치 사양의 최적화를 위한 모델)

  • Lee Yeong-Hae;Lee Jae-Bong
    • Journal of the military operations research society of Korea
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    • v.15 no.1
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    • pp.95-111
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    • 1989
  • A mixted integer non-linear programming model which has the object function as minimizing building costs, and constraints with the functions for carrying capacity and service level of queueing time is developed. By using the proposed model, the most adequate on a building and the most economical elevator's specifications could be determined by sequential search method like complex method.

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Insulation Level Assessment on the Military Residential Facilities Considering the Investment Payback Period (투자회수기간을 고려한 군 주거시설의 단열수준 산정 연구)

  • Park, Young Jun;Meang, Joon Ho;Kim, Taehui;Kim, Sung Joong;Lee, Seung-Min;Son, Kiyoung
    • KIEAE Journal
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    • v.15 no.6
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    • pp.57-62
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    • 2015
  • Purpose: This study, which is based on the investment payback periods, aims to suggest the proper insulation level which can be adapted to the Defense Military Facility Criteria regarding the military residential condominiums. For the energy performance simulation, it is required to collect the residential data regarding the military condominiums and climatic data concerning the regions they belongs to. The estimates through energy performance simulation are the regional heating loads and the heating transmission coefficients of building components. Method: With the heating loads, the annual heating cost saving per square meters is assessed. With the heating transmission coefficients of building components, the additional insulation installment cost per square meters is evaluated. With two outcomes, one as an annual value and the other as a present value, the investment payback period is calculated. Result: In result, it could be concluded that 55~70% insulation ratio can lead a superior residental environments as well as be contributed to the national policy associated with zero-energy buildings because the estimated investment payback period is shorter than the life span of the military residental condominiums. This upshot can be used as a foundation to enactment the Defense Military Facility Criteria associated with military residential condominiums.

Analysis of Shielding Effect on Gamma Radiation of Magnetic Aggregate Concrete Applied to Protective Facility (군 방호시설에 자철석 콘크리트 적용 시 감마선 차폐효과 분석)

  • Lee, Sang-Kyu;Lee, Ho-Chan;Lee, Gun-Woo;Han, Da-Hee;Park, Young-Jun
    • Journal of the Korea Institute of Building Construction
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    • v.20 no.2
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    • pp.129-135
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    • 2020
  • The purpose of this research is to analyze the gamma ray shielding effect of heavy concrete containing magnetic aggregate and to confirm the applicability to the military protective facilities. In general, a military concrete structure protects combatants from bullets, and also it provides some radiation shielding. In this research, experiments were conducted using a Cs-137 source to check the gamma ray shielding effect. In addition, the Monte Carlo N-Particle(MCNP) modeling was applied to evaluate the gamma ray shielding effect of a military structure. As a result, as the concrete thickness increased, the shielding performance improved according th the linear attenuation law. With that, as the ratio of magnetic aggregate was increased, gamma ray shielding performance was also improved. Therefore, this research verified that the application of magnetic aggregate concrete to military facilities for radiation shielding purposes would be useful.

A Study for the Development Direction of Korean Military Geography (한국 군사지리학의 발전방향에 관한 연구)

  • Hwang, Sung Han;Kim, Man Kyu
    • Journal of the Korean association of regional geographers
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    • v.21 no.1
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    • pp.176-191
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    • 2015
  • Military Geography is a literature studying the application of geographical elements to military behaviour. The elements of military geography including topography greatly influences on building military art and theory. The military art applied on korean pennisula from the period of ancient three countries(Koguryeo, Shilla, Paekche) has been developed maintaining consistent stream reflecting topographic features. Despite the close relationship between building of military art and military geography's elements, the study for korean military geography has been depressed and the discourses of literature has been insufficient. But, in the western study of military geography, the study vitalization efforts studying military peace keeping and humanitarism activity are ongoing. Based on the current trend of western study and the analysis of existing korean study, this treatise proposes three plans to improve the study and education of korean military geography. The key contents of plans are comprised with the improvement of education curriculum, the construction of council between relevant organism, and the installation of subdivision in relevant geographical society. The possibility shaping up the identity of korean military geography as a common literature can be increased by enhancing the study toward peace and humanitarism and specifying the method for development as noted on this study.

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Examining the Improvement of the Risk Assessment System for the Safety Management of Military Construction Projects (군 건설공사 안전관리를 위한 위험성 평가 시스템 개선 방안)

  • Jung, Hyun-Sub;Bang, Hong-Soon;Kim, Ok-Kyue
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.335-336
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    • 2023
  • The military has adopted and implemented risk assessment since 2013 to reduce fatalities and accident rates at construction sites. However, risk assessment is carried out as a voluntary preventive activity and is maintained as a superficial administrative process for owners. Risk assessment must comply with the Occupational Safety and Health Act and the Enforcement Guideline of Risk Assessment. However, the scope of the assessment covers many industries, including manufacturing and distribution, making it difficult to apply to construction sites. As a result, the guidelines are interpreted and applied differently at each construction site. This study aims to improve the risk assessment system so that it is applicable to construction projects and proposes the improvement of the risk assessment system by analyzing the current status of serious accidents in military construction projects.

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A Study on the Improvement of Safety Management for Military Demolition Works (군 해체공사 안전관리 개선에 관한 연구)

  • Sang Jun, Jeong;Jong Yil, Park
    • Journal of the Korean Society of Safety
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    • v.37 no.6
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    • pp.71-80
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    • 2022
  • Since the 2000s, the demand for private demolition works has been gradually increasing as the apartment housing market has been led by redevelopment and reconstruction. In the case of the military, the Ministry of National Defense is consolidating troops from each military unit to reorganize the unit structure in accordance with Defense Reform 2.0; the plan includes reducing the garrison used by each unit to 70% of its current level. Accordingly, the demand for demolition work in the military is also expected to increase. However, the military regulations do not reflect the relevant laws that have been revised recently. This study identifies regulations and system improvements for demolition work suitable for the military based on an analysis of accident cases that have occurred during demolition work, of domestic and foreign laws and regulations related to military demolition work, and of the problems with current military safety management at each stage of planning, design, and construction. The study subsequently proposes improvements for military demolition work, including budget execution adjustment, the establishment of training courses, on-site inspections, the development of guidelines for military demolition work, the provision of risk assessment standards, and the need for the qualification of equipment operators.

Transition of Namhansanseong Government Office in the Late Choson Dynasty (조선후기 남한산성 관아건축의 변천)

  • Kim, Ki-Deok
    • Journal of architectural history
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    • v.20 no.6
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    • pp.99-114
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    • 2011
  • Namhansanseong fortress (南漢山城) is not Eupchi (邑治) created for ages but the new settlement of public and military administration as Baedo (陪都) to defend capital territory. Namhansanseong has Jinsan (鎭山) that is named Cheongnyangsan (淸凉山) and its government office building was located in the main place, also a periodic five-day market was being held in the center of fortress. This study is find out the transition and its historical background of government office building on Namhansanseong by the relocation of Eupchi in the 17th century. The conclusion of analysis can be summarized as follows; The main change of government office in the late Choson dynasty is to move Yi-a, administrative complex (貳衙) around Yeonmugwan (演武館). Since 1795, the 19th year of King Jeongjo (正祖), this was fixed by the end of the Choson dynasty on the unification of Magistrate which is also Defense Commander. In the second place, the military office on Jungyeong (中營) that is Junggun's (中軍) place of work was abolished by the reform of Junggun system. Thirdly, transition of the end of the Choson dynasty is the abolition of Sueoyeong (守禦營) and the realignment of government offices. Namely, the administrative agency was moved to Haenggung (行宮) after the collapse of unification in 1895. Also former military offices was changed to police administration on Gwangju-bu (廣州府), Gwangju county level unit.