공동주택의 공용/전유의 경계와 리모델링에 관한 연구

이재석(Lee Jae-Sauk),서형욱(Seo Hyeong-Wook),전재열(Chun Jae-Youl) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1

It is high that occupancy rate of apartment house in Korea, spite of short history of the using multiple dwelling house. So that. trouble and dispute occurs often on right or responsibility, liability and obligation about Ownership, Utilization, Maintenance. Especially in renovation project, the project progress held up in perception gap or conflict of interest with residents. These dispute in daily life and delay of project occurs ambiguous borderline or distinction of Common Used(Sharing) Parts) and Exclusive Possessed (Private) Parts. The law now in force is considered in this paper about theses item. Summarizing the conclusion is as below. 1) In the law now in force, the literal meaning of a word, Exclusive Possessed (Private) Parts is expressed with concept of Ownership, But Common Used (Sharing) Parts is described with Utilization concept. But in calculation of floor area, complementary set of Private Parts is Sharing Parts. This is contradiction in logic and linguistic. 2) Although above. calculation base of Private Parts is inner line of exterior wall. This is unjustly defined. 3) Especially about balcony (in correct architectural vocabulary is veranda) subordinate law contradictits superordinate law. And in structural mechanics also, minute prescription is necessary about Private Parts and Sharing Parts.

전문분야 간 협업을 통한 웹기반 설계관리방안에 관한 연구

이종식(Lee Jong-Sik),차우철(Cha Woo-Chul),이재석(Lee Jae-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1

The construction of a building involves multiple professional fields, due to the current trends of buildings being large and having multiple functions. For this reason, the importance of collaboration between the professional fields has been growing. However, the current design process in Korea does not have an adequate decision-making system, nor does it foster close collaborative relationships between professionals in different fields. As a consequence, flaws and mistakes can often be found in the final building. This paper derives elements of the work, which consist of each part of a building, and the professional fields related to each element of work, in order to minimize the problems, including design errors, that can occur due to a lack of communication between the professionals from multiple fields involved in the construction of a building. This paper presents a collaborative design management method that can be applied among web-based professional fields through the support for decision-making and sharing of design information, by conducting a study on the methodology of the participation of several professionals in designing each part of the building, and proposing a web-based design management plan.

선진 외국의 설계단계별 코스트 계획을 위한 수량산출기준과 산정모델에 관한 연구

조재호(Cho Jae-Ho),이재석(Lee Jae-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1

Cost and the period of construction are the most important factors to be considered for success of a project. The cost of construction at the early design stage is estimated in terms of the approximate by the gross floor area. When applying the approximate estimating method (per pyeong or square meter), it is required to know whether design plan factors and elementals of work affecting factors in accordance with the construction characteristics are being considered. For this, a cost planning guide or a cost model where cost-affecting factors can be applied with a relative perspective depending on the characteristics of a construction project should be studied first. Therefore, the most appropriate cost model in accordance with cost affecting factors (this factor is standard methods of measurement) of a construction project is presented in the paper, supporting decision-making in consideration of cost and design from the perspective of the owner and designer, respectively.

발주자의 요구사항을 고려한 발주방식 선정 방법에 관한 연구

남혜원,안경환,김창교,이재석,전재열,Nam, Hye-Won,Ahn, Kyung-Hwan,Kim, Chang-Gyo,Lee, Jea-Sauk,Chun, Jae-Youl 한국건설관리학회 2009 건설관리 : 한국건설관리학회 학회지 Vol.4 No.3

현행 공공공사에서는 예산에 맞추어 공사를 진행하는 방식을 취하고 있기 때문에 발주자(발주기관)의 요구사항을 충분히 만족시키지 못하고 있다. 따라서 발주자의 요구사항에 맞춘 발주방식 선정에 관한 연구가 필요하다. 이에 본 연구에서는 우선, 발주방식의 정의 및 특성과 미국, 영국, 일본 등 국내 외의 발주시스템을 고찰하였다. 이를 통해 발주방식을 선정하기 위해서는 최고 가치를 지향해야 된다는 결론을 도달하였다. 최고 가치를 지향하는 발주방식을 선정하기 위해서는 가장 우선적으로 발주자의 주요요구사항인 비용, 품질, 일정에 대한 고려를 해야 한다. 이에 본 연구에서는 발주자의 주요요구사항인 비용, 품질, 일정의 상관관계를 분석하였으며, 이를 통하여 여러 가지 발주방식 중 성능발주, 대안발주, Turn Key, 사양발 주의 주요선정요인을 비용, 품질, 일정으로 분류하였으며, 이에 대한 발주방식 선정 방법을 제시하였다. Recently, operation of highway is the complex digital Infrastructure based on complicated IT. The application of IT is increasing more and more in digital Infrastructure. Though IT is very convenient, if unpredicted operating risk of highway occurs, widespread damage can be large. When operating risk of highway occurs, road users are out of smoothly-run service because of the operating interruption. This risk causes unpredicted operating management cost and additional maintenance cost. It will excess over the planned operating cost, which may leads to users's unsafety and operator's insolvency because of income loss. Until now, related studies to find out the risk are not sufficient. The purpose of this study is to suggest risk cost items and to estimate the reasonable risk cost by using simulation method in case of occurring the huge power failure at the operating digitalized highway. This study indicates the several plans to hedge against risk cost and the management of highway project. From now on, it will be used as basic data to confirm the soundness of operating system in Digital Infrastructure.

기존 공동주택의 리모델링 용이성 평가 체계

차우철,임병욱,신창현,신병현,이재석,전재열,Cha, Woo-Cul,Lim, Byung-Wook,Shin, Chang-Hyun,Shin, Byung-Hyun,Lee, Jea-Sauk,Chun, Jae-Youl 한국건설관리학회 2008 건설관리 : 한국건설관리학회 학회지 Vol.9 No.5

Apartments production without a previous example is existed by suddenly rapid growth of population and city. So this mass producted aged Apartments have many problems that is aged and staleness. Confrontation of obsolete and staleness is Build&Scrap and Remodeling. But Remodeling is much better than Build&Scrap Because Remodeling has Social, Economical, Environmental merits. This Research is Feasibility Evaluation System on an object of Remodeling. Feasibility Evaluation means Possibility on Objective action on aiming action in other words. It means degree of difficulty about purpose to act. Remodeling is based on existing apartment, to improve ability and performance of existed aged Apartment and by engineering technique and method. A point of view, development of Remodeling technique and popularization is necessary as well as Remodeling Plan and Construction technique of applied Existing building logical Approach is that. The purpose of this paper is handling allowance range of Remodeling Plan and Achievement accomplishment Feasibility Evaluation of purpose and objective and Understanding. Remodeling Feasibility is evaluated by two aspects. The first is Macro Level Approach of Remodeling Feasibility Evaluation on a Apartment Complex, and The second is Micro Level Approach of Remodeling Feasibility on each housing part is evaluated about removal and dismantlement. $1970{\sim}80$년대에 대량으로 공급된 기존 아파트는 오늘날 노후화라는 문제점을 가지고 있다. 노후화의 대처수단으로 크게 Build&Scrap과 리모델링을 생각할 수 있다. 그러나 리모델링의 경우 사회적, 경제적, 환경적 이점으로 인하여 Build&Scrap 보다 낫다고 할 수 있다. 본 연구는 리모델링 용이성 평가체계에 관한 연구이다. 다시 말해 용이성평가는 목적 공사의 용이한 정도를 의미하며, 공사목적에 대한 난이도를 의미한다. 리모델링은 기존 아파트를 기반으로 재설계하고 요소기술을 도입하여 건축물의 기능 및 성능을 높이는 수법 및 공법으로 이루어 졌다. 어떤 관점에서 보면, 리모델링 기술의 발전과 보급은 리모델링 계획과 이미 적용되고 있는 기존의 빌딩의 논리적 접근처럼 관리가 필요하다. 리모델링의 용이성은 두 가지 측면에서 평가된다. 첫째 아파트 단지의 리모델링 용이성을 평가하는 Macro Level과 두 번째는 주동단위의 철거 및 이동의 리모델링 용이성을 평가하는 Micro Level이다. 본 논문의 목적은 리모델링 계획과 목적, 객관성, 그리고 용이한 정도의 허용 범위를 조정하는데 있다.

계획설계단계에서의 골조 공사비 예측 방법에 관한 연구

탁승원(Tak Seung-Won),이재석(Lee Jae-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1

Recently, in the korean Construction project, the importance of cost management in the Design stage has been increasing. Traditionally, the cost management from Construction project has been using more Construction stage than Design stage. On this, A Study puts importance of cost management of Schematic Design in Design stage. Cost management of Design stage have an effect important on budget decision of owner at the initial stage of Construction project. When it tries to consider an elements that an effect to Construction cost, the element which gives a most big effect in the construction cost are each a construction cost of work type classification that is a possibility. To the construction work type there is architecture, an civil engineering, a landscape architecture, a mechanic, fire fighting and a telecommunication etc, the construction portion comes to share again with the framework, close and the other work type. Many ratio of component hold the framework which it is doing the construction cost major portion most in about 25.91% the work type which composes like this construction cost. Therefore, this research investigates the framework amount analysis method of existing for major portion most hold of Construction cost that framework cost estimating, and against the method which enhance the accuracy of the prediction method of the framework amount study it accomplished a schematic design in the center.

CBR+GA모델을 활용한 물량기반 철근콘크리트 골조공사비 산정 시스템 개발

강병주(Kang Byung-Joo),조재호(Cho Jae-Ho),이종식(Lee Jong-Sik),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.3

Recently expanding market for largely scale construction projects, cost management of construction project have been increasingly recognized as an important factor responsible for the project success. But public organizations have been continuously operating the same methods as before in cost estimating, so it raise an issue of reliability for estimated cost. Therefore, this study present a highly reliable model that makes preliminary estimates based quantity data in early design stage. it enables engineers to efficiently manage total cost of project as well as partial cost estimating. This study develop a model of database that is created with historical data conducted by government offices. The model proposed can estimate a cost for RC Structure in schematic design stage, and it is applied to CBR+GA logics to explore best similar cases. In case of estimating methods used to previous research, it is based on actual cost data. Due to the cost estimating compensated by inflation rate vary in market economic conditions, it will follow as an inevitable consequence of reliability problem. It needs to find better way to ensure accuracy through quantity database. Also, This study has been conducted in attempts to verify the reliability of preliminary estimation. It is checked for the feasibility of presented model with P-National Tax Service Project aside from the database.

기본설계단계에서의 약식 물량산출을 이용한 건축 구조체 공사비 개산견적 모델

김수민(Kim Soo-Min),조재호(Cho Jae-Ho),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.12

A prediction of construction cost in preparation for construction document is calculated in compliance with the unit cost in Public construction of korea. This eventually means that the reasonable construction cost of a building can't be determined before construction document phase cost of construction is settled and that the cost of construction is calculated inefficiently because of connection failing between cost management of detailed estimation and information. To improve those problems, therefore, Cost estimating model of structural building elements with approximate quantity survey method is suggested in this research. The model predict the amount of materials and the cost of construction on the basis of historical similar cases. In the direction of data analysis of this research, ratio statistics value is put to practical use to fit into the peculiarities of approximate estimate of each work trade on the basis of actual data amount of materials of historical cases. In addition, the construction phase is connected through the result of a approximate estimate sorted by elements, details work trade.

건설업체의 경영성과 예측모델 구축

차우철(Cha Woo-Chul),이종식(Lee Jong-Sik),권원(Kwon Won),이재석(Lee Jea-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)

Korea's construction industry has attained exterior growth. It currently faces much competition, however, due to the country's economic woes and investment in construction through IMF at the end of 1997, the changes in the country's related policies and systems, the reduced number of construction projects, and the recession in the construction industry. Due to these changes in Korea's construction market, 145 subcontractors (whose work is based on the subcontracts they are able to obtain from general contractors) have gone bankrupt this year, a 74.7% increase compared to the 83 subcontractors who went bankrupt in the same period last year. This study looks into what caused such subcontractors to go bankrupt, such as their assumed inability to predict the future scenarios of their companies. It also constructs a model that can be used by a construction company in assessing its own management ability and performance, such as integrating a balanced score card with system dynamics, to support decision-making.

건설공사 생산성 극대화를 위한 하도급 발주방식 개선방안에 관한 연구

남혜원(Nam Hye-Won),권원(Kwon Won),이재석(Lee Jae-Sauk),전재열(Chun Jae-Youl) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1

The construction industry has unique characteristics that make it different from the manufacturing industry in some regards. The construction companies in Korea that affect changes in the business environment, not only in the domestic environment but also overseas, prepare various corresponding strategies, including reorganization of their conventional business structures and reinforcement of their business, in order to improve their constitution and have cutting-edge competitiveness. In order to overcome the constraints of the production method, a new method of placing an order is needed. When the new method is applied in the areas where communication among participants is presently lacking, as well as the conflicting factors between many work sections, or the parts that are hard to manage, it is expected that productivity, the period of construction and quality can be improved. This paper presents an improved method in the form of a multi-trade subcontract, through reviewing the subcontract method from diverse perspectives, to maximize productivity.