Considering that the violation of a right to sunshine between adjacent buildings has been raised as the important social environmental problem in the reality that the gravitation of population toward urban area, the necessity of evaluating the sunshin...
Considering that the violation of a right to sunshine between adjacent buildings has been raised as the important social environmental problem in the reality that the gravitation of population toward urban area, the necessity of evaluating the sunshine environment affecting the buildings scientifically and quantitatively and establishing a rational standard of sunshine is required.
The sunshine environment is not so difficult problem, but it is difficult to secure the sunshine according to the high density of buildings by the gravitation of population toward urban area. Therefore the form of buildings is regulated to secure the minimum sunshine environment and the sunshine for surrounding area should not be obstructed.
The height of apartment house has the inseparable relation to the distance between adjacent buildings on the current Construction Law and the layout, form, length, height and depth of building have a great influence on the sunshine environment.
To examine the basic sunshine condition of regulations indicated on Construciton Law, it means the distance to secure the sunshine over the fixed hours prescribed by construction regulations on the basis of the winter solstice and the analysis that it is difficult to secure a desirable sunshine condition with the current distance between adjacent buildings has been found in many researches and it has been criticized to be ineffective.
To secure the appropriate duration of sunshine on the winter solstice which has the lowest altitude of the sun in residential buildings is very meaningful in evaluating a comfortable sunshine environment of the residence. That is, to assure the minimum duration of sunshine, the fixed distance from the whole surface of building to adjacent buildings should be maintained and for this, Construction Law sets the planning conditions of building and the range of regulation.
Existing researches reveal clearly that locational and topographical factors such as the capacity of building, pitch of building, azimuth angle, latitude, longitude and gradient and the form and layout of buildings affect the sunshine environment of resident, but this study analyzes and examines the existing research results and the changes of the right to sunshine, investigates the appropriate layout and length of apartment building from the side of viewing and is to seek the rational improvement methods of construction regulation.
This study is to improve the physiological and social enviornment from the visual and mental oppressive feeling, sunshine and viewing of many-storied apartment houses, gets the degree and area of sun shadow to evaluate the sunshine environment with L.D apartment complex at Sangmu New Downtown, Kwangju, analyzes the sunshine enviornment of the areas, analyzes the visual obstacle according to the length and depth of apartment building by calculating the visual angle of each building and then the following results are obtained.
(1) The area of sun shadow of many-storied apartment house is greatly influenced by the length, height and depth of apartment and although the pitch of building is appropriate within the distance regulated by Construction Law, the sunshine enviornment is not always good and the building should be arranged not to produce multiple sun shadows.
(2) Since the pitch of building for securing the right to sunshine has the permanent sun shadow in low story of the building due to the multiple sun shadow of the adjacent buildings, it is desirable that the right to sunshine is secured by the regulation ofazimuth angle and the consideration of the right to sunshine.
(3) The current Construction Law regulates that all residences should have the height less than that of securing the continous duration of sunshine over fixed hours between 09:00 and 15:00 based on winter solstice prescribed by each local construction regulations, but the development and application of evaluation methods for the security of sunshine are required by considering the azimuth angle and altitude of the sun and the whole amount of sunshine of each area.
(4) As a result of analyzing the visual obstacle according to the depth and length of apartment building by obtaining the visual angle of each building, the depth of apartment building is 10~12M, the depth of the building : the length of the building is calculated as 1:5 in obtaining the visual obstacle angle within the maximum 27˚ on the axis of the line connecting the center of building and then the appropirate length of the building is 50~ 60M.
Therefore the important factors affecting the sunshine environment of many-storied apartment complex are the multiple sun shadow and visual obstacle due to the length, height and depth of adjacent apartment buildings.
The solutions are piloti construction at low story of the building, the limitation of capacity and height of many-storied apartment buildings and the improvement of residential environment converted into the quality from the quantity with flexible regulation of the current law should be followed.