• Korean Journal of Construction Engineering and Management
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• v.9 no.2
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• pp.190-198
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• 2008

Recently construction equipments have been used in line with building the structures that have become taller, larger and complex. And as the works at the elevated level for apartment and residential-commercial building projects have been on the rise, the number of tower cranes mobilized tends to be increased too. Due to such an increase in using the equipment serves the critical factor for the project management. The climbing-type tower crane, which increases its height following the structure, has been increased and the need for selecting the optimal model has been increasingly Important in securing the stability. The study hereby proposes the model to evaluate the stability of the climbing-type tower crane. The model was designed to assist in selecting the type of crane as well as in developing the design of Collar comprising the 3 types of support member, evaluating the stability and designing the embed. The model proposed is expected to make commitment in selecting the optimal type of equipment and evaluating the support member and embed for enhancing the stability, thereby ultimately enabling to implement the prefect in efficient way.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.448-452
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• 2006

Remodeling is deemedto be very important from the perspective of the recycling of resources, instead of scrapping the existing structure, and the creation of 'value added' which is equivalent to the 'value added' from the new construction. In addition, the selection of the appropriate construction method assures the saving of construction cost, the shortening of construction period, and the improvement of quality. Moreover, the selection of the construction method for the remodeling construction is far more important than the current new construction work, considering that the characteristicsof construction site and the structure have a great effect on the construction in case of the remodelingconstruction. Current selection of the construction method, however, does not reflect the construction information, but just adheres to the construction method which was commonly applied previously. Therefore, this study proposes the measure to embody the tool that assists the decision making in selecting the construction method.

• Journal of the Korea institute for structural maintenance and inspection
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• v.8 no.4
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• pp.211-222
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• 2004

Lately construction industry tends to prefer remodeling of existing buildings rather than new construction or reconstruction of buildings due to strengthening of several restriction related to real estates along with prolonged depression. And also, remodeling of building costs less and creates less wastes compared to reconstruction and so it is more profitable in financial and environmental view. However remodeling is process of creating new environment with existing building. Therefor remodeling must follow the procedure realizing problem and fix the problem based on through investigation on existing building and users requirement must be faithfully reflected. Specially in case of apartment houses, since vagueness on ownership and management authority on common parts exists. Hereupon, in this study we are to present the procedure of analyzing apartment house remodeling method through user requirement by approaching to several considerable factors in user request side.

• Korean Journal of Construction Engineering and Management
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• v.7 no.5
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• pp.94-104
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• 2006

The changed Korean government law associated with the public apartment housing supply, so called the $^{\circ}{\AE}$Apartment Sales Price $Cap^{\circ}{\phi}$, requires new system for estimating construction cost in order to set appropriate price. A model apartment project was carefully designed and its construction cost were analyzed in many different ways. Based on the analyses outcomes, 1,028,000 Won/m2 (excluding cost for underground parking lot) is the most appropriate Price Cap for a smaller than $85{\beta}{\geq}$ apartment unit. Further, it was revealed that the price have to be adjusted reflecting such factors as underground size; structural system; external complex quality; and consumer preferences. Findings from this study will enable the Korean government to realize faster and better application of the related laws. The methodology for obtaining appropriate apartment construction cost will also benefit for future researchers.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.5-12
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• 2008

The construction of Pusan National University Yangsan Hospital is a new construction of a medical town in Yangsan. It is a case that CMr participated in the project from planning to post-completion. It shows an actual proof of Construction Management business applied CM by each phase. In this case, CMr selected the design-build contractor in the planning phase and technically performed CM businesses in every single phase such as design and construction schedule management regarding application of Fast Track technique, procurement management and contract administration in phases based on the Fast-tract; technique, design review, VE in the design phase, change order management in the construction phase and operating and maintenance in the post-construction phase. This study would go far toward applying CM to Mega Turnkey projects by analyzing the problems of CMr's practical application to the project and providing guidelines for effective and efficient CM business implementation especially in the Turnkey projects.

• 한국신재생에너지학회:학술대회논문집
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• 2005.06a
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• pp.569-572
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• 2005

신$\cdot$재생에너지는 환경친화적이면서 무한하게 공급되므로 지속가능한 미래 에너지원으로 각광받고 있으나 선행투자와 시장전망의 불확실성 때문에 정부 주도의 개발이 필요하다. 정부는 이러한 여건에 있는 신$\cdot$재생에너지 사업의 활성화를 위하여 공공기관 신축 건물에 대해 신$\cdot$재생에너지의 이용을 의무화하는 법령을 만들고, RPS제도를 도입하는 것을 검토하는 둥의 노력을 하고 있다. 이러한 정책수립 과정에서 국민들의 의견을 수렴하여 충분히 반영해야 신규 정책에 대한 타당성이 뒷받침되게 된다. 이에 일반 국민의 신$\cdot$재생에너지에 대한 관심과 선호도에 대한 인식을 분석하기 위해 일반 국민에게 가장 보편적으로 알려져 있거나 이용 중인 특정 신$\cdot$재생에너지의 종류를 알아보고, 아울러 가장 도움을 주거나 우리나라 여건에 적절하다고 국민들이 기대하는 종류가 무엇인지 조사하였다. 또 거주지역에 신$\cdot$재생에너지 생산기지가 건설되는 것에 대한 찬반 의견을 물어 일반 혐오시설 건설에 대한 의견과 비교하고, 응답이 각 계층별로 어떠한 양상을 띠는지 조사하였다. 이를 통해 정부의 신·재생에너지 정책에 대한 국민들의 입장과 수용여부를 분석하고자 한다. 응답자 중 대부분이 태양열과 풍력 에너지라는 용어를 경험한 것으로 드러난 반면, 소수력과 바이오매스 에너지는 생소하게 느끼고 있었다 일반적으로 친숙한 용어의 신$\cdot$재생에너지의 종류에 대해 기대를 갖고 있는 반면, 생소한 신·재생에너지에 대해서는 기대 수준이 낮은 것으로 나타나 신·재생에너지 관련 교육의 필요성을 보여주고 있다. 또 여성보다는 남성이, 그리고 신$\cdot$재생에너지에 대한 사전지식이 많을수록 거주지역에 신$\cdot$재생에너지 생산기지를 건설하는 것에 대해 호의적이었다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.82-87
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• 2003

Domestic remodeling market is now growing centering around non housing building. Unlike non housing building remodeling business, understanding of remodeling demanders accustomed to profit of reconstruction, deficiency of experience performing remodeling project and construction, shortage of will performing remodeling policy and detailed action method are difficulties in performing apartment building remodeling business. Understanding change of remodeling demanders. strong economic incentive by government, construction management paradigm shift from new construction into building life cycle, application of construction method using existing building condition before remodeling and remodeling related industry infrastructure are required to improve this remodeling business circumstances.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.378-383
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• 2006

This study presents the results from an investigation into ABS to revitalize small and medium construction enterprises, and to analyze merits and demerits of ABS introduction using sensitivity analysis some realistic cases. According to some available procedures, this study suggests ABS introduction structure of new education facilities construction in BTL projects of two different types. In order to analyze the effectiveness of introduction, a model was built as new education facilities construction in this paper. In addition, this study tried to put a figure on finance interest changes by analyzing changes for earning rates and money that payed by the government. Moreover, this study also presents merits and demerits of ABS introduction.

• Journal of the Architectural Institute of Korea Structure & Construction
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• v.34 no.11
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• pp.27-35
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• 2018

The purpose of this study is to examine the effects of boundary RC frame(composed of one tie-beam and two tie-columns) on seismic performance of unreinforced masonry walls to suggest alternative way for seismic design of unreinforced masonry wall structures. Two test specimens are prepared, one is a typical unreinforced masonry wall and another is alternative unreinforced masonry wall with additional boundary RC frame. The structural experiments were carried out to evaluate the difference of seismic resistance performance between two test specimens with or without the boundary RC frames. From the test results, it was found that the failure mode of unreinforced masonry wall fundamentally changed from 'brittle' to 'ductile' by the installing of boundary RC frames. And, the maximum load and energy dissipation capacity of the test specimen with boundary RC frame was increased about 1.6~1.7 and 2~3 times respectively compared with a typical unreinforced masonry wall specimen.

• Journal of the Korea Institute of Building Construction
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• v.22 no.4
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• pp.371-378
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• 2022

The Ryomyong Street project is the only construction project for which the construction cost is known, but its scale cannot be estimated because it is marked in North Korean Won. In this paper, the construction cost per m² of North Korean apartment building construction was calculated based on the construction and assembly amount of the Ryomyong Street project. 160 to 1 was calculated as the ratio of the building construction cost per m² between South and North Korea based on the Ryomyong Street project in Pyongyang and Seoul Housing & Communities Corporation. This ratio can be used to assume the construction size presented in North Korean won as there is no official exchange rate between the two Koreas.