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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ponding ： ウィキペディア英語版 Ponding Ponding is the unwanted pooling of water, typically on a flat roof. ==Cause== Most flat roof systems are designed with a slight pitch to shed water off the sides, usually into a scupper system or into an internal drainage system. When a scupper or drain is clogged or fails for other reasons, storm water tends to pool around that low area. Over time, with each passing storm, the weight of the storm water will deflect the structural system beyond the structures bending point, thus allowing a bigger puddle to form. As a bigger puddle forms more weight is applied to the structural system causing more bending, allowing an even bigger puddle, then more weight, until the structure fails.〔"Investigation, analysis and design of an experiment to test ponding loads on flexible roof systems" by Duncan Stark, published by Oregon State University, June 2008〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ponding」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.