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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Construction Engineering and Management
Journal Basic Information
Journal DOI :
Korean Institute Of Construction Engineering and Management
Editor in Chief :
Volume & Issues
Volume 16, Issue 6 - Nov 2015
Volume 16, Issue 5 - Sep 2015
Volume 16, Issue 4 - Jul 2015
Volume 16, Issue 3 - May 2015
Volume 16, Issue 2 - Mar 2015
Volume 16, Issue 1 - Jan 2015
Selecting the target year
An Approach to the Graph-based Representation and Analysis of Building Circulation using BIM - MRP Graph Structure as an Extension of UCN -
Kim, Jisoo ; Lee, Jin-Kook ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 3~11
DOI : 10.6106/KJCEM.2015.16.5.003
This paper aims to review and discuss a graph-based approach for the representation and analysis of building circulation using BIM models. To propose this approach, the authors survey diverse researches and developments which are related to building circulation issues such as circulation requirements in Korea Building Act, spatial network analysis, as well as BIM applications. As the basis of this paper, UCN (Universal Circulation Network) is the main reference of the research, and the major goal of this paper is to extend the coverage of UCN with additional features we examined in the survey. In this paper we restructured two major perspectives on top of UCN: 1) finding major factors of graph-based circulation analysis based on UCN and 2) restructuring the UCN approach and others for adjusting to Korean Building Act. As a result of the further studies in this paper, two major additions have demonstrated in the article: 1) the most remote point-based circulation representation, and 2) virtual space-based circulation analysis.
An Economic Feasibility Analysis on the Movable Modular Lodging Buildings
Lee, Jeehee ; Son, JeongWook ; Jeong, WoonSeong ; Yi, June-Seong ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 12~20
DOI : 10.6106/KJCEM.2015.16.5.012
Construction industry pays attention to modular construction recently which based on factory production not on labor intensive site production. Since modular construction has high time shortening effect and easiness of demolition and recycling, it has been applied to the temporary residential building. Domestic modular construction market are not activated yet, however, due to the high initial cost to realize modular construction. This study proposes demand-sensitized movable modular building in order to reduce the financial burden. The study compares between RC method building and Modular building which moves building when the demand falls off from Life-Cycle Cost's viewpoint. As a result of the economical evaluation, RC method achieved profits faster than Modular model, but Modular model's gross earnings during the life-cycle are much bigger than RC method. In other words, the result means that the market-sensitized movement of the modular building would be an economci choice in Life-Cycle Costing aspect.
Analysis of Competence Factors Assessment for Specialty Contractors' Employees using IPA
Hong, Sung-Ho ; Jung, Dae-Woon ; Oh, Chi-Don ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 21~30
DOI : 10.6106/KJCEM.2015.16.5.021
Recently, the construction policy is rapidly changing and construction project becomes larger and more complex. Specialty contractors are in charge of the actual construction work, but they are considered to have low competence level. To strengthen competence of specialty contractors' employees, above all, it is essential to evaluate and to analyze the competence factors level for specialty contractors' employees. However, there is no in-depth research on competence factors level for specialty contractors. Therefore, the purpose of this study is to analyze the competence factor in order to find the high priority factor. The result of this study can be utilized for development of effective educational program for enhance specialty contractors' competence.
Financial Feasibility Analysis for the Development of Urban Telecommunication Facility Purpose Site
Park, Kyungyong ; Jeong, Moonoh ; Lee, Sangyoub ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 31~41
DOI : 10.6106/KJCEM.2015.16.5.031
The telecommunication industry has been considered as a national fundamental infrastructure. However, due to the rapid evolution of technology and the change of industry market conditions, the telecommunication infrastructure needs no more huge space for facility and it leads its use to the mixed-use development based on private investment. This study intends to examine the financial feasibility of the development project for the optimal alternative use of telecommunication facility purpose site as a case study based on two types: contributed acceptance and multi-level designation. The NPA and IRR has been analyzed by the simulation of stochastic variables including rent price and its variation rate, vacancy rate, construction cost, capitalization rate and discount rate. The research finding indicates that the two types of development are satisfied with the financial feasibility and it is noteworthy that the rent price turns out to be the most critical factor for the project. Accordingly, it is expected that these research finding can be applied for providing the solid cases of financial feasibility analysis for the development project in limited use of telecommunication facility purpose site.
Development of BIM-based Construction Document Information Database Structure through the Link to the BIM Model and Construction Document Information
Lee, Donggun ; Cha, Heesung ; Kim, Kyungrai ; Shin, Dongwoo ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 42~53
DOI : 10.6106/KJCEM.2015.16.5.042
Construction industry has the form of industry progressed through mutual cooperation among participants in various fields. Accordingly, it may be referred to as an aggregate of information where various pieces of information are generated and managed according to each construction phase. Most of the information on the construction project is issued in the form of a document. And document management of the site is critical to successful execution of the project. Therefore, in the construction site to use IT technology for efficient information management. But, most of the information on the construction site is managed by the non-structured document. and Information management in the construction site is difficult to lack of information management systems. In this study, proposed construction information database structure and breakdown structure to the information management of the construction site through the BIM technology. Therefore, previous studies were reviewed about the document management and information link management. and Space breakdown structure and information breakdown structure was proposed to structure the information of the construction site and Database for information storage is designed. And, BIM-based construction information database was examined through the application scenario.
Development of Manufacturing Planning for Multi Modular Construction Project based on Genetic-Algorithm
Kim, Minjung ; Park, Moonseo ; Lee, Hyun-soo ; Lee, Jeonghoon ; Lee, Kwang-Pyo ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 54~64
DOI : 10.6106/KJCEM.2015.16.5.054
The modular construction has several advantages such as high quality of product, safe work condition and short construction duration. The manufacturing planning of modular construction should consider time frame of manufacturing, transport and erection process with limited resources (e.g., modular units, transporter and workers). The manufacturing planning of multi modular construction project manages the modular construction's characteristics and diversity of projects, as a type of modular unit, modular unit quantities, and date for delivery. However, current modular manufacturing planning techniques are weak in dealing with resource interactions and each project requirement in multi modular construction project environments. Inefficient allocation of resources during multi modular construction project may cause delays and cost overruns to construction operation. In this circumstance, this research suggest a manufacturing planning model for schedule optimization of multi project of modular construction, using genetic algorithm as one of the powerful method for schedule optimization with multiple constrained resources. Comparing to the result of the existed schedule of case study, setting optimized scheduling for multi project decrease the total factory producing schedule. By using proposed optimization tool, efficient allocation of resource and saving project time is expected.
Assessment of FEED Structure and Functions for Project Management of Thermal Power Plant Construction
Kim, Namjoon ; Jung, Youngsoo ; Yang, Myungdirk ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 65~76
DOI : 10.6106/KJCEM.2015.16.5.065
FEED (Front End Engineering and Design) is the key area that determines the competitiveness of procurement and construction in the EPC contracts especially in terms of the added value. Nevertheless, previous researches in FEED have been limited to the process and deliverable of design work or the particular management business function (e.g. System Engineering, collaboration, information etc.). In this context, the purpose of this study is to propose a comprehensive FEED structure and its functions from the project management perspective throughout the whole project life-cycle for thermal power plants. Proposed FEED business procedures are classified into three levels; First level is the classification of FEED business phases, the second level defines major FEED management functions, and the third level is detailed FEED functions. A survey using proposed FEED functions and assessment variable was conducted in order to analyze the current status and the areas for future improvement. It is expected that the proposed structure, functions, and evaluation methodology for FEED management will contribute to effective practice of FEED as well as to improvement of competitive capability for engineering, procurement, and construction (EPC) companies.
Using Ridge Regression to Improve the Accuracy and Interpretation of the Hedonic Pricing Model : Focusing on apartments in Guro-gu, Seoul
Koo, Bonsang ; Shin, Byungjin ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 77~85
DOI : 10.6106/KJCEM.2015.16.5.077
The Hedonic Pricing model is the predominant approach used today to model the effect of relevant factors on real estate prices. These factors include intrinsic elements of a property such as floor areas, number of rooms, and parking spaces. Also, The model also accounts for the impact of amenities or undesirable facilities of a property's value. In the latter case, euclidean distances are typically used as the parameter to represent the proximity and its impact on prices. However, in situations where multiple facilities exist, multi-colinearity may exist between these parameters, which can result in multi-regression models with erroneous coefficients. This research uses Variance Inflation Factors(VIF) and Ridge Regression to identify these errors and thus create more accurate and stable models. The techniques were applied to apartments in Guro-gu of Seoul, whose prices are impacted by subway stations as well as a public prison, a railway terminal and a digital complex. The VIF identified colinearity between variables representing the terminal and the digital complex as well as the latitudinal coordinates. The ridge regression showed the need to remove two of these variables. The case study demonstrated that the application of these techniques were critical in developing accurate and robust Hedonic Pricing models.
Cost Performance Comparison of Project Delivery Methods in Public Sector - Focusing on Mediator Effect of Biddropping on Change Orders -
Moon, Hyosoo ; Lee, Hyun-Soo ; Park, Moonseo ; Lee, Bogyeong ; Joo, Seonu ; Son, Bosik ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 86~96
DOI : 10.6106/KJCEM.2015.16.5.086
According to previous research, the reason why Design-Build(hereinafter "DB") outperforms Design-Bid-Build(hereinafter "DBB") in terms of cost is due to less change orders(hereinafter "COs"). However, if biddropping was low for DBB resulting into increasing COs, then it would be wrong to conclude that DB is superior due to less COs. Therefore, in order to confirm such misjudgment, the attempt to comprehensively analyze biddropping, COs and delivery method was made as previous methods had analyzed either the relationship between delivery method and COs, or biddropping and COs. This research uses path analysis, which simultaneously compares effect sizes on COs according to delivery method and biddropping based on the project type, and validated the mediator effect. The research proved that DB outperforms DBB due to less COs cannot be validated as biddropping caused a mediator effect by intervening between the delivery method and COs for specific project types. Therefore, the mechanism of delivery method acts on COs through biddropping was established. Also, the identity of biddropping was investigated in a different perspective from previous research. Based on this result, this research is expected to help determine a delivery method by considering the mediator effect of specific projects and evaluate performance.
Trend Analysis of Labor Input Ratios by Work Types in Apartment Housing Constructions
Jeon, Sang-Hoon ; Koo, Kyo-Jin ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 97~104
DOI : 10.6106/KJCEM.2015.16.5.097
Apartment Housing 25 in the field of construction since 2000 collected by types of labor: reinforced concrete, plaster, internal, equipment, electrics communication, the other work. And the performance of labor input was collected in the amount of construction work performed on a monthly basis. After changing the construction period in the standardization work that is 100% of the construction period, the amount was converted into labor ratio by type. Analysis of the input flow rate and the amount of labor conclusions were as follows: (1) The size of the labor rate is reinforced concrete work (38.25%), plastering work (5.10%), internal work (5.67%), equipment work (9.10%), electrics communication (8.76%), the other works (33.12%) and the size of labor rate is the largest work in reinforced concrete work. (2) The peak of labor input ratio was from 52.5% month to 62.5% month. This was when the labor rate of 3.6%. (3) The period month of the largest labor ratio% is 35% month by reinforced concrete construction, and this time it was 2.12% per month labor rate, and reinforced concrete construction is finishing from 65% month to 80% month. This showed the greatest congestion of mutual interference between each works is being continue. The results of this study are the greatest congestion in apartment housing construction has informed the high period(%months), which is essential to a successful project.
Establishing a Energy Utilization Database for Energy Performance Evaluation of Multi-Family Housing using District Heating
Jeong, Jaewook ; Hong, Taehoon ; Ji, Changyoon ; Leigh, Seung-Bok ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 105~113
DOI : 10.6106/KJCEM.2015.16.5.105
In order to evaluate the energy performance of buildings, it is important to determine reliable information of energy utilization during operating phase. It is also required to establish the database which have the amounts of population deducted by objective filtering and analysis. In this study, all energy sources were applied to evaluate synthetically the energy performance of Multi-Family Housings(MFH) using district heating and the amounts of population were obtained sufficiently through data searching in Seoul and neighbor cities. Finally the database of source energy utilization and
emission in 325 MFH complexes were established through cross validation between data sources and statistical analysis. Additionally, further ideas have been proposed to improve existing MFH Management Information System.
A Study on the Multiple Real Option Model for Evaluating Values based on Real Estate Development Scenario
Jang, Mikyoung ; Ku, Yohwan ; Choi, Hyemi ; Kwon, Tae-Hwan ; Kim, Juhyung ; Kim, Jaejun ;
Korean Journal of Construction Engineering and Management, volume 16, issue 5, 2015, Pages 114~122
DOI : 10.6106/KJCEM.2015.16.5.114
Real estate development requires significant amount of capital investment. The project duration has been increased according to its enlarged size. For this reason, cost overrun and time delay are important risk factors that should be managed properly. As a method to hedge the risk, varoius real option methods have been presented. However, conventional project value assesment methods such as NPV(Net Present Value) have weakness to support decision making by reflecting dynamic situations in terms of variation of cost and time. Furthermore, the decision making process is serious of actions rather than discrete event. The purpose of this paper is to present a multiple real option valuation method to overcome the deterministic aspect of real option presented in previous research and practice. The method is developed as following: firstly, to select the model that can be applied in the real estate development project through a survey from previous literature on real options analysis; secondly, to apply data from office development case in order to verify the model by applying conventional real option and multiple real option valuation. According to analysis result, multiple real option provides enhanced values comparing to NPV and single real option.