• Korean Journal of Construction Engineering and Management
• /
• v.6 no.1 s.23
• /
• pp.169-176
• /
• 2005

The purpose of this study is to analyze the maintenance condition and cost in the past ten year on the subject of permanent Rental Housing in Seoul and Gyeong-Gi. It also suggests the problems and improvements related to long-term maintenance. The Interviews with thirty experts who have had experience in this area more than ten years and data analysis are adopted as basic methods. The data on the maintenance cost such as a budget in practice by a term and the real cost far the repair are analyzed. The primary findings of this study are as follows : 1) the rate of maintenance cost for 13 years is $4.56\%$ when the prime construction cost is regarded, while the figure is $6.70\%$ when the construction cost is considered 2) it is just of forced the basic lists for repair applied commonly to Rental housing. Hence, individually managers consider the features of housing and determine the detail lists.

• Korean Journal of Construction Engineering and Management
• /
• v.14 no.3
• /
• pp.107-114
• /
• 2013

The interest in traditional Korean housing has greatly increasing in Korean housing market. However, it is difficult to wildly disseminate for a high construction cost reason. In order to effectively facilitate the Hanok construction, Korean government has initiated a project that develops a new style Korean housing, which meets the requirements of low cost and modernized life style. Cost of building is mainly affected by materials and construction methods. Hanok has some special commodities those significantly impact the cost. In order to effectively cut down the costs, well-organized planning for costs is very important. Also, improving the productivity by utilizing new materials and methods can result in cost down. In this context, this paper compared and analyzed two different types of Korean housing; one is a modernized Korean house which used new materials and methods, the other is a traditional Korean house which was build up by purely traditional methods. Productivity has also been compared and analyzed for 5 major commodities between two types of models. Based on these comparative data, effect of cost down by new model has been analyzed. As a result it is confirmed that by using the new materials and methods could highly effect to increasing productivity and cost down. Especially, the cost of Roofing have been more influenced by using new material while the Wood and Finishes have been influenced by new construction method. Construction cost of Foundation (Earthwork, Concrete, Masonry) and Openings were influenced both factors, changing of materials and methods.

• KIEAE Journal
• /
• v.16 no.3
• /
• pp.129-135
• /
• 2016

Purpose: Building figuration is imperative to perceive the its value, environmental clean status and form. Therefore, maintenance activities of the building exterior are required to keep the housing condition and value. Each household should pay the repair cost which is brought out in the future. For this repair cost, the estimation model would needed to forecast and provide the required cost. This study aimed at providing the estimation model of the repair cost, using the repair survey data between the 2011 and 2014 in Seoul. Method: For these, it took various estimation function of repair cost such as 1st function, inverse function and so on. These above functions would be applied into the building exterior and outdoor facilities which figure the building shape and characteristics. Result: Results of this study are shown ; First, among 11 estimation models, the power function has a better statistics and goodness-of-fit than any other models. Second, the estimation model with a variable of household has a pattern in upward to the right. On the contrary, the model with management area is little downward to the right. Both of them are depended on the estimated parameter of the power function and the parameter smaller than 1.

• Journal of the Korean Society of Industry Convergence
• /
• v.6 no.3
• /
• pp.223-230
• /
• 2003

Generally, the life-span of a multi-housing complex is over 50 years, but in reality they are usually demolished after 20 years in spite of its remaining life expectancy. Thus, this research focuses on the estimation of the optimum economic life-span of a multi-housing complex. To estimate the minimum total cost point of start to finish of a multi-housing complex, we'll apply MAPI(Machinery and Allied Product Institute) and LCC(Life Cycle Cost) theory.

• Land and Housing Review
• /
• v.2 no.4
• /
• pp.355-365
• /
• 2011

Construction duration is very important as a factor which comprises three axises of construction management with quality and cost in construction project. In general project condition, construction duration is optimized while minimizing construction cost and securing required quality. However, in case of insufficient project time duration or delayed projects, project progress management is different from those of normal projects. These project areas need solutions to complete work within a given completion day. To time shortening the current duration of each typical floor of structural framework in apartment construction is investigated, and a basic time schedule planning for typical floor of structural framework in normal projects is planned. This study proposed 3 ways for time shortening of urgent project or insufficient construction duration project. Also, This study proposed detailed time shortening method and technical solution conditions while time is shortened.

• Korean Journal of Construction Engineering and Management
• /
• v.15 no.6
• /
• pp.35-43
• /
• 2014

Ministry of Land, Infrastructure and Transport (MOLIT) promote long-life housing to reduce social costs generated by poorly considered rebuilding and extend the life-span of housing. Long-life housing has advantages of durability, floor plan variability, efficient maintenance and ease of remodeling because it is a beam-column structure building. However, long-life housing requires somewhat higher initial construction cost than wall type apartments. It makes increase of long-life housing more difficult. In this study, we compare between wall-type apartment and beam-column structure apartment from Life-Cycle Cost's viewpoint. As a result of the study, long-life housing incurs 18% higher initial cost than wall type apartment, but is 7% more economical than wall type apartment in terms of Life Cycle Cost. Therefore, it is shown that long-life housing could be a beneficial alternative to traditional wall type apartments.

• Journal of the Korean housing association
• /
• v.13 no.5
• /
• pp.59-69
• /
• 2002

This study is designed to derive a cost estimation method for the management of green areas in apartment housing blocks. For this purpose, quantity of green areas, their usages, management techniques were analyzed through a survey of residents. In this process, contingent valuation method(CVM) is utilized to evaluate the cost of green areas. The survey was conducted for about two weeks in June of 2002. The amount of willingness to pay(WTP) for green area management is calculated by the CVM program. The findings are as follows; First, the residents want more green areas in their apartment blocks, as well as in the surrounding urban areas, due to the shortage of green areas in their living environments. Second, the residents' opinion on green area is summarized as that of natural environment protectionist - it helps living environment to be more amenable and contributes the preservation of urban and global environments. This fact can be interpreted as the peoples profound recognition toward green areas. Third, the contingent valuation method(CVM) is suitable to evaluate WTP for management costs of green areas. Fourth, more than half of the residents(61.6%) agreed upon the costs of green area supply and management. calculated by the CVM. Estimated WTP is ￦ 1,900~2,400 per month per household.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2011.04a
• /
• pp.69-74
• /
• 2011

The purpose of this study is to give meaningful information about the coordination process in the construction of cooperative housing, hoping that the interest in this type of housing would spread wide in Korea. The Seongmisan village, a representative urban community village in Seoul, was studied in this study on the opinion coordination between residents and coordinators. For this qualitative research, 2 residents and 2 coordinators answered the 'open questionnaires' on the prior basic planning, land purchase, financing, architectural planning, construction & inspection, and the actual life thereafter. Following is the result. 1) The residents, in almost every step from the prior basic planning to the construction, had no sufficient information or knowledge especially in the legal or financial aspects. It explains why the coordinator has to participate in every step educating residents by means of the workshop or debate with professionals. 2) The construction cost was the most debated topic, which means that the cost has to be accurately projected by the coordinator. The confidence and success of the project stems from the accurate projection and transparent management of the construction cost.

• Journal of the Korean housing association
• /
• v.17 no.5
• /
• pp.87-95
• /
• 2006

Building components have been deteriorated by various factors such as location, a building type, a surrounding environment and so on. In addition, each component has a peculiar characteristics, compared with other components in properties of matter an used part. Building components would be required to maintain its function and performance to provide the resident with a decent living condition. It is important to decide the repair time, scope and a required cost in repair plan, considering the each component's characteristics. In this parer, it aimed at providing the economic repair pattern to analyze the relation of the time-elapse and the cumulative repair cost in the apartment housing using 3rd quadratic function. Results of the study are as follows: First, the shape of the function for the economic repair is classified into two type. One is the continuous increase type of the cumulative cost which properly means the iterative repair type after built. The other is that the function has the maximum state at a point which means one-repair after its repair would be delayed to a scheduled time. Second, the iterative repair pattern would include window, roof proof, lighting and water supply pipe. The other repair pattern would include the paintings, heating pipe and sign board.

• Korean Journal of Construction Engineering and Management
• /
• v.13 no.2
• /
• pp.91-101
• /
• 2012

In planning phase of Public Multi-Housing Projects, it is required to develop the methodology and criteria for fair cost prediction with influencing power from planning phase to occupancy phase. Many studies still have focused on the prediction of cost by multiple regression. However, there is no logical explanation about the influence of nonmetric variables for the prediction of cost in planning phase. Accordingly, this research pursues a cost prediction model including nonmetric variables for use in planning phase. There are 3 steps of this research : 1) Finding the factors influencing construction cost and assigning variables for a multiple regression. 2) Conducting a dummy regression analysis with nonmetric variables and model validation by comparing actual cost data. 3) Developing the ratio of RC structure cost to wall structure cost by using cost predection model. The results could establish cost prediction process including the influence of nonmetric variables and the ratio of RC structure cost to wall structure cost.