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屋顶保温----USD构造法有哪些优点？
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屋顶保温----USD构造法有哪些优点？
时间：2022-03-12 03:04
关键词：
建筑物理
机械工程
大学试题
工学
答案解析
<p> 采用外保温的屋面，传统的做法是保温层上面做防水层，由于防水层的水蒸气透过能力很差，使屋面容易产生内部结露。同时防水层直接暴露在大气中，受日晒、交替冻融等影响，极易老化和破坏。USD构造法有可能完全消除内部结露的可能性，又使防水层得到保护窗户的保温设计。</p>
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