• Solar Energy
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• v.12 no.3
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• pp.1-9
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• 1992

The study aims to make it possible to analyze the solar rights of a building quantitatively at duilding design stage. The solar rights analysis method utilzing Waldram diagram and solar rights table is suggested, and computerized for an accurate, quick and quantitative analysis. To make the suggested analysis method can be applied at any location, Waldram diagram generating process for a given latitude was computerized. The solar rights analysis for a selected sample building block was processed in accordance with the development of analysis method. The results of the study are : 1) An algorithm to present the solar rights of a building on Waldram diagram was developed and computerized. 2) An algorithm to generate the solar rights table was developed and computerized. 3) An algorithm to generate the solar rights table to analyze the difference of two dalternatives was developed and computerized.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.1
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• pp.121-129
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• 2007

This study aims at analysing the daylight condition of the existing and the newly planned apartment complex due to the azimuth angle, and throughout that result, presenting the necessity of new concept of architectural law for apartment complex design in the matter of daylight condition. For this purpose selecting one apartment complex which showed typical shape of '=' or 'ㅁ', 3D daylight analysis was applied for the existing condition. And then after new complex was planned according to the architectural law, additional 3D analysis on the daylight with the various conditions were accomplished. This 3D analysis for daylight condition can give accurate results and design direction which are suitable for the new complex plan of apartment houses.

• Spatial Information Research
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• v.19 no.1
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• pp.21-28
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• 2011

With the recent overcrowding of metropolitan cities and people's increasing interest in housing environment, there are frequent disputes occurring over the right to daylight. In order to determine whether daylight has been encroached accurately. we need to consider the daylight change by the effect of the geographical features of the surrounding areas but most of the previous relevant studies overlooked this consideration. Thus, in order to determine the encroachment of daylight accurately, this study analyzed the change in the duration of daylight according to geographical features by applying the Hemispherical Viewshed Algorithm to Busan Metropolitan City. According to the results of the analysis, the minimum and average duration of daylight decreased with an increase of altitude by 50m. Second, according to the time bound designated by law, up to 78.6% of the area was influenced by the duration of daylight. Third, the geographical features of the surrounding areas had a significant effect on the duration of daylight. Accordingly, in order to analyze the right to daylight accurately, it is essential to consider the geographical features of the surrounding areas. Furthermore, the Hemispherical Viewshed Algorithm used in this study and the visible area of the sky obtained from the algorithm are considered helpful to analyze the influence of the geographical features of surrounding areas on the legal duration of daylight before analyzing the practical right to daylight.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.22 no.2
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• pp.95-103
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• 2004

Recently, many troubles about the right of light have been arising ceaselessly as taller and more dense the buildings have been in the urban. The present time, the right of light is not stipulated legally. For solving above problems, there spend so too much lawsuit expenses and time on the damages about construction stopped and delayed, according to subjective decisions instead of scientific and rational solutions. The past studies of the right of light weren't based on the analytic data and depend on the simple view of point. So, those of studies gave trust to people hardly, only were treated as the ways on the decision about construction among non-engineers. Therefore, this paper studies the efficient solution of problems about the right of light through analysis about mass of sunlight according to season and the hour using a simulation technique on the civil construction.

• Journal of the Korean Association of Geographic Information Studies
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• v.17 no.3
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• pp.116-131
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• 2014

In this study, sunshine environment in an urban area is analyzed using a numerical model which considers sunshine-duration blocking by topography and buildings. The numerical model used in this study has an improvement in the algorithm detecting sunshine duration in the model domain. The main improvement in the algorithm is to detect sunshine duration using all the surfaces of any grid cell(the previous model uses the center of any grid cell). The improvement in the algorithm gives more accurate evaluation of sunshine duration at corner surfaces of buildings. Using the improvement model and geographic information system(GIS) data, sunshine environment is analysed at an building-congested area in Busan for a week in four seasons. The results show that sunshine duration can be much changed by apartment complexes, high-rise buildings, topography in the model domain.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.25 no.2
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• pp.165-175
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• 2007

Nowadays, architecture in urban areas is dominated by the goal of spanning wide spaces and creating openings large enough to distribute daylight to building interiors. Daylight availability of building in city strongly depends not only on the building's height but also on spaces between buildings. Recently numbers of disputes over the daylight availability are increasing in high density developed areas because residents' demand for pleasant residential environment is getting stronger. Therefore in this study we constructed the three-dimensional information of buildings using LiDAR data connected with digital map and then suggested conclusions by applying it to daylight availability analysis. This study presents an approach to judge accurately the violation of a right to enjoy sunshine by using altitude and azimuths of the sun, simulating three-dimensional urban space precisely, and classifying the total duration of sunshine and the continuous duration of sunshine each householder. We expect that local government performs precisely the confirmation and permission business about urban planning and design by advising this approach.

• Journal of the Korean Solar Energy Society
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• v.24 no.3
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• pp.9-17
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• 2004

Nowadays, a concern of building environment has been arousing. Furthermore, according to this trend, the social concern has expended continuously. Especially, the right of daylight is essential for both the pleasant life and building maintenance. In this reason, it has dealt as like property right. Therefore, the Infringement on the right of daylight can be applicable to the infringement of property right. However, few un-notarized calculation methods have been used without careful examination about daylight duration calculation methods which can be used for determine sunshine infringement as the dispute solution, therefore. In this thesis We analyzed and concluded the differentiations of two calculation methods which are using nowadays.

• Korean Journal of Environmental Agriculture
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• v.13 no.1
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• pp.39-46
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• 1994

Two types of sunshine recorders, Jordan and bimetal, were used for measuring the duration of sunshine and percentage of sunshine in Weather Forecast Offices(WFO) and Weather Observation Stations(WOS) in Korea, respectively.These two gauges showed different values in each element observation. To evaluate the solar energy resources by duration and percentage of sunshine, relevant parameter should be adapted to use the two kinds of data for zoning of agricultural climatic area and comparison of regional solar energy distributions. In this respect, the correlation and distribution pattern were found by analyzing data from the two types of sunshine recorders. The results were as follows. The monthly duration of sunshine by the Jordan type was $50{\sim}60$ hours lower than the bimetal type and its value in May was the highest in a year. The percentage of sunshine by the Jordan type was $5{\sim}10%$ lower than the bimetal type. The seasonal difference of sunshine hour data by two types of sunshine recorder became small in winter but large in summer. Standard deviation of monthly duration of sunshine of WFO and WOS was $11{\sim}32$ and $17{\sim}25$ hours and percentage of sunshine was $3{\sim}11$ and $4{\sim}9$ % respectively. The range of deviation in WOS data was smaller than WFO. The highest distribution of duration and percentage of sunshine was in the Southern Coastal Area, whereas the lowest in the Central North Western Area.

• 한국공간정보시스템학회:학술대회논문집
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• 2005.05a
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• pp.419-425
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• 2005

산악지역을 관통하는 도로의 경우 그 특성상 절토 후 도로를 시공하는 경우가 자주 있으며 때로는 매우 긴 구간에 일조가 적게 나타나 음영이 오래 지속되는 곳이 발생한다. 본 연구는 GIS를 이용하여 도로의 노선계획시 예상되는 일조영향을 평가하여 정확한 데이터를 제공하고자 한다. 실험대상지역을 선정하고 수치지형자료의 변환을 통하여 3D 지형 메쉬데이터를 작성하고 동일좌표체계의 도로선형자료를 반영하여 정확한 도로모델링을 생성하므로써 도로의 각 지점별 일조영향분석을 위한 기초자료를 구축하였다. 또한 도로노면상의 음영시간을 계산하고 일영이 도로 전체에 어느 정도 유지되는지를 가시적으로 모델링화하여 계절별 시간대별로 도식화하므로써 판단자의 시각적 분석을 가능케 하였다.

• Korean Journal of Remote Sensing
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• v.34 no.5
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• pp.749-762
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• 2018

In this study, the changes of the sunshine environment due to the construction of buildings were analyzed by season. Using a geographic information system (GIS) data, the topography and the buildings were constructed around Pukyong National University (PKNU) in Busan. The numerical model was performed for a week in each season, before and after the construction of buildings. Even before the construction of the high-rise building complex, the area of sunshine block is wide due to the apartment complex located in the southeast of the PKNU campus and the mountain in the south. After the construction, the sunshine-blocked area became wider after the sunrise and before the sunset. The area of sunshine block after 1 hour at sunrise increased by 1.60%, 1.50%, 1.58% and 1.36% in the vernal equinox, summer solstice, autumnal equinox and winter solstice, respectively. The building complex in the east (south) of the PKNU campus made shadow in more than 1,000 m (750 m) toward the west (east) just before the sunrise (sunset). Especially, the sunshine duration in PKNU campus decreased by 46.61%, 22.75%, 58.56%, and 11.31% in the vernal equinox, summer solstice, autumnal equinox and winter solstice, respectively. The analysis of the sunshine duration for a dormitory building showed that the construction of the building complex in the south of the PKNU campus reduced the sunshine area of the western (southern) wall of the dormitory by 30.91% (49.45%) for a winter week.