Abstract
The purpose of this paper is to study some problems of sun shadow arisen from the new structure and compare the sunshine obstructing structures handled by the Sunshadow Problem Adjustment Committee of Fukuoka City with another medium and highrise structures. The locations which problems have been arisen, are largely in places where numerous medium and highrise structures are erected, and the territories in which low structures have numerously been erected recently. As for the ratio of building volume to lot, many structures which occurred problems shows 200% ratio or more. Moreover, the total floor area and height of the building (or number of stories) are larger than the volume of other medium and highrise structures in the adjoining district. We reach the conclusion that Problems have been arisen from the difference of size of the new structure which inhabitations expect to the actual size, and fromthe volume of sun shadow. Strictly speaking, problems occur from the following cases. (1) The highrise building has been erected in a district where has not so many medium and highrise structures. (2) The size of the new structure (total floor area, height (largely exceeds the existing structures. (3) Housing is damaged by sun shadow. (4) The permissible limit is exceeded by (1), (2) and (3).
