STANDARDS OF GROSS BUILDINGS COVERAGE RATIO IN MAJOR CITIES FOR THE PLANNING OF RESIDENTIAL AREA IN CONSIDERATION OF WIND FLOW : Effects of arrangement and structural patterns of buildings on the nature of regional wind flow Part2

摘要

In this paper, the results of the measurement on 13 real residential areas (270 square meters each) by wind tunnel tests are presented. The causes are examined why the spatial average wind velocity in the area of mid-to-high-rise apartment houses is found to be higher than that in the area of low-rise houses even though the gross buildings coverage ratio has been the same in both areas from the results of the measurement on 27 areas including 14 areas of the ex-paper. It is confirmed that the difference of spatial average wind velocity ratio between them is attributed not by the increase of the buildings height, but the difference in horizontal housing patterns that are related to the gross area ratio of mid-to-high-rise apartment houses. Finally, the standards of gross buildings coverage ratio in major cities for the planning of residential area in consideration of wind flow are proposed.