This study aims at making basic investigation 正 br the f μ ture standard and regulation of building shape considering the qua 璽 ity of daylight arQund the buiIding . F 孟 rstly , we s玉 mu 生 ated sky factor and relative muminance i ' n cLoudy conditiQn . Comparing their levelS , it was 葦 bund that sky factor could be representative index of the brightness in urban open space , Secondly , the relative solar energy in sunny condition and sunsh 孟 ne duration were calcu 正 ated . A 且 though the distribution of sunshine duration ha5 wider spread toward east and wes 転 these impacts spread to north intensively in the distribution of relative solar energy ・
Tllis paper aims at Tnakil 】 g the perf〔,rma . rlce − orlented bu】 k contr 〔 } 1 日 ystem f')r s疋}curing t , he day } ight a {: cess t〔) the possible adjacent buildings , ln the previous paper , we propo5ed the idea of the , ' lmaginary W 甜 s " to assess the impact of newly developed building and other bllildiIlgs on the skylight , a £ cess Lo
Many urban redevelopment projects have been implemented using Planned Development Design System (PDDS), which is one of the most common incentive FAR bonus systems in Japan, because of its flexibility. This study aims to clarify how the local municipalities have operated PDDS that the national government established around 45 years ago. In particular, we investigate how three cities (Tokyo Metropolis, Osaka City and Yokohama City) have changed their operational criteria of PDDS as they faced their own urban problems from time to time. Overviewing the changes of the national government's technical criteria of PDDS, we discuss the differences and similarities among the three cases.
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