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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
LHI Journal of Land, Housing, and Urban Affairs
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Journal DOI :
Land and Housing Institute
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Volume & Issues
Volume 3, Issue 4 - Oct 2012
Volume 3, Issue 3 - Jul 2012
Volume 3, Issue 2 - Apr 2012
Volume 3, Issue 1 - Jan 2012
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A Study on the Type of Welfare Service for Strengthening Tenant's Housing Welfare in Permanent Affordable Housing
Roh, Sang-Youn ; Yoon, Young-Ho ; Cho, Young-Tae ; Lee, Ji-Eun ; Cho, Yong-Kyung ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 1~14
DOI : 10.5804/LHIJ.2012.3.1.001
Since the provision of Permanent Affordable Housing in the early 1990's, it is confronted with the need to strengthen its welfare service due to aging of its facilities and the declining welfare system for its tenants. In addition, the aging population of tenants is on the rise, increasing the group of tenants that are in need of care. The local social community center has entered into the community of permanent affordable housing and takes partial responsibility in the tenant's social welfare. However, social community center is mainly responsible for providing welfare service to its local residents and thus limited in its ability to satisfy welfare service to tenants of permanent affordable housing. Therefore, it is required to renew the existing welfare system to better suit social demands of tenants according to its specific social group and the characteristics of housing complex. This study aims to propose methods that can strengthen welfare service and analyze the characteristics of welfare service by investigating the existing conditions of welfare system for the tenants in permanent affordable housing complex. For this purpose, this study presents with categories of service standards, by breaking down and codifying welfare service and propose applicable mixed-use service in pre-existing permanent affordable housing.
A Pilot Site Planning and Design based on 3D Spatial Information
Hwang, Chul-Sue ; Lee, Sang-Hun ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 15~22
DOI : 10.5804/LHIJ.2012.3.1.015
The purpose of this research was to propose housing estate planning that applies 3D spatial information to DAS housing estate planning program and to enhance applicability of 3D spatial analysis. In addition, this research evaluated the applicability of 3D spatial information to site planning of Korea Land and Housing Corporation and developed models for the purpose of applying the spatial information efficiently. Moreover, we tested applicability of LiDAR that can allow 3D spatial information to be more efficient and accurate. The results from cross section analysis implies that LiDAR has higher usability than existing geographic information. Additionally, this study shaded light on the suggested system development model that can simulate location or height of an apartment house by spatially analyzing difference between before-and-after site development.
Does Schwabe's Hypothesis Hold in Korea: Empirical Evidence from the Characteristics Changes of Homeownership Demand in Seoul Metropolitan Area
Kang, Dong-Woo ; Lee, Seong-Woo ; Kim, Hyun-Joong ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 23~32
DOI : 10.5804/LHIJ.2012.3.1.023
The Schwabe's law explains the housing demand weighs more on demographic factors rather than on socio-economic factors as societies achieve higher level of economic development. Based on Schwabe's law, the present study constructs a hypotheses to analyze changes of housing demand with respect to housing tenure change in Seoul Metropolitan Area (SMA) during the periods of 1980 to 2005. To test the hypotheses, the authors take advantage of the Population and Housing Census 2% data from 1980 to 2005. The authors apply binary probit with decomposition method to verify our hypotheses. The authors found that the influence of socio-economic factors on housing tenure have been weakened in the housing market during the periods of 1980 to 2005. On the other hand, the relative influence of demographic factors have been strengthened in the housing market during the periods. The present study concludes that housing demand in the SMA have been dramatically changed from socio-economic characteristics to demographic factors to decide housing tenure during the periods, which confirms the hypotheses of the present study.
A Research on the Application of Eco-Friendly Approval Criteria in Forest Land-use
Park, Shin-Won ; Choi, Sang-Hee ; Cho, Young-Tae ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 33~43
DOI : 10.5804/LHIJ.2012.3.1.033
The research which it sees is the simulation research for "The Ecological Diversion of Forest Land-Use System". It accomplished the simulation which applies a permission standard, it developed escape it did a model and the basic draft. From the research which it sees in order to investigate the application characteristic of natural intimate mountain district application standard the mountain district whole aspect instance middle actual object a time mountain district use standard about under selecting which it will yell it applied. "Natural intimate mountain district development standard triangular position plan research" from compatibility of the mode of life mountain district whole aspect permission standard which is proposed about under investigating it presented the improvement program and a institutional improvement direction of corresponding standard. About under preserving plan it applies the yearly environment the mountain district to sleep it prepares the foundation for it accomplished the transcendental research for. With the achievement resources which the mountain district has resultantly must preserve a value, limit of the development size it will be able to minimize the effect which it follows in development, the arrangement method back could be proposed, also the case which will use the mountain district where it is damaged induces the development which cabinets to the concept of demobilization, the case which will apply the existing forest resources takes a triangular position with the act it will be able to increase the circulating value of the resources and will do.
A Study on the Design Directions for Public Housing through Trend Analysis in Housing
Kwon, Hyuck-Sam ; Yoon, Young-Ho ; Kim, Yu-Jeong ; Park, Kwang-Jae ; Cho, Sung-Hak ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 45~58
DOI : 10.5804/LHIJ.2012.3.1.045
This study aims to provide new design directions for public housing by analyzing trends in housing design. To this end, we investigate the changes in population, household, society, policy, institution, and technology as the main factors that can affect the housing design trends. Then we analyze the applications of public housing design and suggest the new design directions for public housing after considering experts' opinions. The low growth rate of population, growing separation of household members and increasing level of income produced more diverse demands from residents. In addition, housing demand is notably different by region, and the supply of medium and small-sized housing and small scale developments are growing. Information technology and green technology are also advancing. As a consequence, future housing trends would change from numerically-controlled to performance-based, from central to regional-oriented, from unit to city-centric. Current designs of public housing reflect recent housing trends- in reducing the number of housings and making view corridors by placing a central square in the middle. This shows that the existing designs are not differentiated by region and we need to develop various approaches according to location characteristics and the corresponding new housing types. Therefore, this study proposes the following five directions: responsiveness to demand changes, reflection of location characteristics, connectivity to a local community, realization of green environment, and acquisition of housing function.
An Empirical Study on the Differential Ratio between Construction Cost for Land Development and Incurred Cost: Case of Housing Business District for Land Development in LH
Kim, Tae-Gyun ; Chang, In-Seok ; Lee, Duck-Bok ; Kim, Ok-Yon ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 59~68
DOI : 10.5804/LHIJ.2012.3.1.059
The current land development cost price system is classified as the creating land by construction price and composition changes that occur sporadically in the process of completion at the source of the factors by incurred cost price. Housing for land cost price system is a lack of objectivity which scheme of the such a gap due to the land in accordance construction and incurred cost price system so far. Therefore, in order to increase the objectivity of costing the costing of predictable surprises should be reflected in the process. Under such a background, this study defined the effective differential ratio as the predictable, estimated them for various characteristics of each business district to reflect. For this, set the properties category of five types to attributes and making the complex category and Look-up table. Which result of model validation is showed a high reliability. Therefore, Continuous accumulation of material in the future, when them to reflect the construction cost, will contribute to the bridge the gap the construction cost between incurred them.
A Study on the Improvement of Measuring Methods in Land Suitability Assessment: Focused on the Distance Measurement and Threshold Definition
Jeong, Yeun-Woo ; Lee, Sang-Jun ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 69~78
DOI : 10.5804/LHIJ.2012.3.1.069
This study proposes an approach to improve the accuracy of land assessment result focused on the Land Suitability Assessment. The detailed analysis processes are; (a) that they are analyzed considering resistance in distance measurement on the space characteristics of location, and; (b) that an assessment result is measured according to the threshold definition of membership function, which is applied in estimating conservation suitability. The assessment results are; firstly, the method considering resistance better reflects the local characteristics of area with worse accessibility including rivers and mountains than one by linear distance; secondly, the existing method that the maximum value of a target area is defined as the maximum threshold may draw a value evaluated lower than a threshold definition considering the distribution of measured indices. Finally, satellite images are overlapped with the assessed results, the applicability level from the approach proposed by this study is more coincident with the present status. The assessment method proposed by this study can be meaningful in view of that it improves the accuracy of Land Suitability Assessment. Furthermore, it can be applied as SDSS, which can support effective establishment of urban policies, in case of complementing the problems in executing the assessment system.
An Assessment Study of Seismic Resistance of Two-story Wood-frame Housing by Shaking Table Tests
Ni, Chun ; Kim, Sang-Yeon ; Chen, Haijiang ; Lu, Xilin ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 79~82
DOI : 10.5804/LHIJ.2012.3.1.79
While there exists a relatively large body of technical information for the engineered design of wood-frame buildings to resist seismic ground motions, the quantitative assessment of seismic resistance of conventional houses built by prescriptive requirements is less well understood. Forintek Canada Corp., in collaboration with other research and industry partners, has embarked on a research project to address this topic. This paper will report on the seismic shake table tests of a full-scale wood-frame building. The two-story specimen,
in plan, was built on the seismic shake table at Tongji University in Shanghai, China, according to Part 9 of the 1995 National Building Code of Canada and shaken uni-directionally in each of the two principal directions. Three different seismic table motions were applied at increasing peak ground motion amplitudes up to 0.40 and 0.50 g. The specimen was repaired after the above sets of seismic table motions, and successive runs were conducted for increased door openings. Measurements included specimen accelerations, displacements and anchorage forces. Static stiffness of the specimen was measured at low force levels, and natural frequencies were measured after each seismic loading stage by applying low-level random excitation. The results presented consist of the capacity spectra of the shake table tests, changes in specimen stiffness and natural frequencies with increasing seismic loading. These results and those from other recent shake table tests elsewhere will be compared with simplified engineering calculations based on codified values of strength, and on that basis preliminary conclusions will be drawn on the adequacy of the current code provisions and design guides in Canada and the USA for conventional wood-frame construction.
Mechanical Properties of Cement Material for Energy-Foundation (EF) Structures
Park, Yong-Boo ; Choi, Hang-Seok ; Sohn, Jeong-Rak ; Sim, Young-Jong ; Lee, Chul-Ho ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 83~88
DOI : 10.5804/LHIJ.2012.3.1.083
In this study, physical characteristics of cement and/or concrete materials that are typically used for energy-foundation (EF) structures have been studied. The thermal conductivity and structural integrity of the cement-based materials were examined, which are commonly encountered in backfilling a vertical ground heat exchangers, cast-in-place concrete piles and concrete lining in tunnel. For this purpose the thermal conductivity and unconfined compression strength of cement-based materials with various curing conditions were experimentally estimated and compared. Hydration heat generated from massive concrete in the cast-in-place concrete energy pile was observed for 4 weeks to estimate its dissipation time in the underground. The hydration heat may mask the in-situ thermal response test (TRT) result performed in the cast-in-place concrete energy pile. It is concluded that at least two weeks are needed to dissipate the hydration heat in this case. In addition, a series of numerical analysis was performed to compare the effect of thermal property of the concrete material on the cast-in-place pile.
A Study on the Performance of the Hybrid Ventilation System for Apartment Houses
Chun, Chu-Young ; Kim, Gil-Tae ; Kim, Sang-Hee ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 89~96
DOI : 10.5804/LHIJ.2012.3.1.089
The purpose of this study was to evaluate the applicability of hybrid ventilation system in apartment housings and present a design method to improve the performance of hybrid ventilation system using the CFD simulation. As the object of CFD simulation, a small apartment houses with area of
were selected and evaluated. The test hybrid ventilation system are window frame natural air supply & duct exhaust hybrid system(Hybrid 1) and window frame natural air supply & bathroom and livingroom exhaust hybrid ventilation system(Hybrid 2). To evaluate the ventilation efficiency, we used the locations of diffuser installed for each system as the variables through the CFD simulation. In the case of Hybrid 1, the ventilation efficiency of the exhaust duct diffuser located on the inside room was higher rather than the exhaust duct diffuser located on the entrance. In the case of Hybrid 2, the most efficient system was the system that the diffuser connecting the bathroom static pressure fan is installed on the center of the living room. The ventilation efficiency of the Hybrid 2 in the case of
type was more than 20% of the Hybrid 1. But, The ventilation efficiency of the Hybrid 2 in the case of
type was more than 14% of the Hybrid 1. Therefore, to apply the Hybrid ventilation, a study that considers various variable should be conducted.
Suitability Assessment and Maintenance Planning of the Guided Drainage Method on Underpass Structure
Jin, Kyu-Nam ; Lee, Jung-Min ; Kim, Young-Jin ; Park, Jae-Hyeon ; Cho, Gye-Chun ;
LHI Journal of Land, Housing, and Urban Affairs , volume 3, issue 1, 2012, Pages 97~109
DOI : 10.5804/LHIJ.2012.3.1.097
For the design of underpass structures, -1.0m(G.L) ground water level guideline for the design of railway, subway, utility tunnel etc, is still being used in Korea. As a result, the underpass structure can be forced by buoyancy, and therefore the in-situ buoyancy anchor method is usually being applied to prevent the uplifting force. For the Yeongjongdo sky city project, the drainage method was applied to remove the buoyancy force. In this study we estimate the efficiency and safety of the applied design and propose the detailed guidelines for standard design and maintenance of the guided drainage technique. Especially, the auxiliary pumping well was operated to maintain the ground water level around the underpass. In the study site, the applied guided drainage method has advantages in both engineering and economic aspects.