Abstract
The multiple regression analysis of investigation data into the actual conditions in overseas buildings with polyester powder coating exterior that is reported in previuos paper are as follows. (1)Chalking is significantly influenced by sunshine and elasped time. That is agreeable to empirical knowledge. (2)Gross change is clearly influenced by sunshine, precipitation and elasped time. That is agreeable to empirical knowledge. (3)Color difference is influenced by sunshine. However, correlation between of calculation with invetigation is not enough. (4)Based on above results, if the polyester powder coating is applied in building exterior in Tokyo, it is estimated that chalikng would be progressed to class1 after 10 years from building completion and class3 after 20 yaers. Gross retention of south face of the building is estimated 65% after 10 years from building completion and 45% after 20 years. (5)It is judged that these deterioration is not behind in baking type solvent coating that has been popularized to building exterior in Tokyo.
