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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Construction Engineering and Project Management
Journal Basic Information
Journal DOI :
Korean Institute Of Construction Engineering and Management
Editor in Chief :
Samuel Ariaratnam / Hong Tae-hoon
Volume & Issues
Volume 3, Issue 4 - Dec 2013
Volume 3, Issue 3 - Sep 2013
Volume 3, Issue 2 - Jun 2013
Volume 3, Issue 1 - Mar 2013
Selecting the target year
Development of the Assessment Framework for the Environmental Impacts in Construction
Hong, Tahoon ; Ji, Changwoon ; Jeong, Kwangbok ; Park, Joowan ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 1~9
DOI : 10.6106/JCEPM.2013.3.3.001
Environmental problems like global warming have now become important issues that should be considered in all industries, including construction. In South Korea, many studies have been conducted to achieve the government`s goals of reduction in environmental impacts. However, the research on buildings has only focused on CO2 emission as a research target despite the fact that other environmental impacts resulting from ozone depletion and acidification should also be considered, in addition to global warming. In this regard, this study attempted to propose assessment criteria and methods to evaluate the environmental performance of the structures from various aspects. The environmental impact category can be divided into global impacts, regional impacts, and local impacts. First, global impacts include global warming, ozone layer depletion, and abiotic resource depletion, while regional impacts include acidification, eutrophication, and photochemical oxidation. In addition, noise and vibration occurring in the building construction phase are defined as local impacts. The evaluation methods on the eight environmental impacts will be proposed after analyzing existing studies, and the methods representing each environmental load as monetary value will be presented. The methods presented in this study will present benefits that can be obtained through green buildings with a clear quantitative assessment on structures. Ultimately, it is expected that if the effects of green buildings are clearly presented through the findings of this study, the greening of structures will be actively expanded.
Modelling of On-Site Energy Consumption Profile in Construction Sites and a Case Study of Earth Moving
Yi, Kyoo-Jin ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 10~16
DOI : 10.6106/JCEPM.2013.3.3.010
The annual expenditure on diesel oil and heavy oil in the construction sector is the second largest among all industrial sectors. According to the greenhouse reduction scheme of Korean Government, construction sector targeted 7.1% reduction by 2020. Although this target is not higher than other industrial sectors, it is not easy to achieve the reduction target without radical advance in technology, which cannot be expected to happen soon, considering the conservative characteristics of construction industry. Most researches on environmental issues focus on the issues related to energy saving matters during material production stage or maintenance stage, such as heating and insulation, and few deal with the issues directly related to the energy use in the construction sites. This research regards the operation of equipment for the on-site construction processes as a system and attempts to model the energy use processes related to the activities in construction sites, and provides simulation results of earth excavation and hauling processes. The result of this research is expected to aid construction planners estimating the time-based patterns of energy use and assessing greenhouse gas emission and to help selecting more energy efficient alternatives at the planning stage.
Cost-Effective Model for Energy Saving in Super-Tall Building
Song, Kwonsik ; Park, Moonseo ; Lee, Hyun-Soo ; Kim, Sooyoung ; Shin, Jinho ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 17~22
DOI : 10.6106/JCEPM.2013.3.3.017
In many urban cities, super-tall buildings have been being constructed around New York and Chicago as the center since 1930 to improve the efficiency of land use and respond to new residential type. In terms of energy consumption, super-tall buildings are classified as a top energy consumption building. Also, as time passed, the degradation of energy performance occurs in super-tall buildings like general things so that these cannot show the initial performance planned in the design phase. Accordingly, building owners need to make a plan to apply energy saving measures to existing building during the operation phase. In order to select energy saving measures, calculus-based methods and enumerative schemes have been typically used. However, these methods are time-consuming and previous studies which used these methods have problems with not considering the initial construction cost. Consequently, this study proposes a model for selecting an optimal combination of energy saving measures which derives maximum energy saving within allowable cost using genetic algorithms. As a contribution of this research, it would be expected that a model is utilized as one of the decision-making tools during the planning stage for energy saving.
Estimating the Loss Ratio of Solar Photovoltaic Electricity Generation through Stochastic Analysis
Hong, Taehoon ; Koo, Choongwan ; Lee, Minhyun ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 23~34
DOI : 10.6106/JCEPM.2013.3.3.023
As climate change and environmental pollution become one of the biggest global issues today, new renewable energy, especially solar photovoltaic (PV) system, is getting great attention as a sustainable energy source. However, initial investment cost of PV system is considerable, and thus, it is crucial to predict electricity generation accurately before installation of the system. This study analyzes the loss ratio of solar photovoltaic electricity generation from the actual PV system monitoring data to predict electricity generation more accurately in advance. This study is carried out with the following five steps: (i) Data collection of actual electricity generation from PV system and the related information; (ii) Calculation of simulation-based electricity generation; (iii) Comparative analysis between actual electricity generation and simulation-based electricity generation based on the seasonality; (iv) Stochastic approach by defining probability distribution of loss ratio between actual electricity generation and simulation-based electricity generation ; and (v) Case study by conducting Monte-Carlo Simulation (MCS) based on the probability distribution function of loss ratio. The results of this study could be used (i) to estimate electricity generation from PV system more accurately before installation of the system, (ii) to establish the optimal maintenance strategy for the different application fields and the different season, and (iii) to conduct feasibility study on investment at the level of life cycle.
Dynamic Modeling of Building Services Projects: A Simulation Model for Real-Life Hospital Project
Abhishek, V. ; Jagadeesh, P. ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 35~41
DOI : 10.6106/JCEPM.2013.3.3.035
All infrastructure projects are said to be inter-dependent, uncertain and labour-intensive in nature. There is no exception for building services sub sector. For a real time project such as `The construction, extension and refurbishment of Employees` State Insurance Corporation (ESIC) Hospital at Tirupathy, India with total area of 45,000 square feet at an estimated cost of 1100 million rupees, a generic process model is developed to simulate the effect of set of identified variables on construction project. The `Stocks and Flows` of dynamic model affords relevant insights to project managers, who apply this knowledge when designing better performance through more appropriate project planning. It is concluded from the model-based approach that building services works can be improved through specific better focussed managerial efforts, such as an increasing coordination effectiveness at the planning stage, clarifying prerequisite conditions prior to installations. Otherwise, pending works arising from work clashes can lead to knock-on effects resulting in productivity constraints and pressures, as well as more rework and demolition. Current study reveals that the model enables deep insight into various interdependent processes, their by improving construction performance levels, by addressing the dynamics of design errors and defective works, and recovering delayed schedule.
A Review of Safety and Quality Issues in the Construction Industry
Ogwueleka, Amaka Chinweude ;
Journal of Construction Engineering and Project Management, volume 3, issue 3, 2013, Pages 42~48
DOI : 10.6106/JCEPM.2013.3.3.042
Construction industry is considered as the most hazardous industry due to its unique nature. Safety and quality management are essential to control hazards and improve success in project implementation. This paper focuses on evaluating the crucial factors influencing safety and quality management in construction projects. In order to achieve this, the qualitative and quantitative approaches were used for data collection. The findings of this study reveal the crucial safety factors as management commitment, safety awareness of top management practices/ procedures/ reviews, and errors in judgement or carelessness. Project supervision, employee involvement/ altitude, and expertise knowledge/ training were considered as the crucial quality factors influencing safety and quality management. The study shows that safety and quality issues cannot be overlooked therefore proper implementation is paramount to achieve project success.