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屋面防水设计原则是什么

屋面防水设计原则是什么

浏览：35次 | 提问时间： 07-06 08:16

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Formerly 07-06 08:17

屋面防水的基本方法归纳起来只有两个字“排”、“防”。
前者是利用屋面坡度，将防水构件互相搭接铺盖，把屋面积水因势迅速排除，使渗漏的可能性减少到最小;后者是利用防水材料，堵塞屋
面防水构件的缝隙，防止雨雪积水的渗漏。
以上两种方法，一般情况下，“排”是主要的，当屋面具有一定度时，防水效果好，省工省料，比较经济，此时应以“排”为主，以“防”为辅。当屋面坡度很小时，因防水材料厚度的限制及爬水和
毛细管现象的存在，此时屋面应以“防”为主。
根据多年来工程实践的总结，对屋面防水的设计原则归纳起来是：“防排结合，以防为主;多道防线，综合治理”。
地下工程防水由于所处环境条件比较苛刻，防水要求比屋面工程更严格，所以总的设计原则是：“防、排、截、堵相结合，因地制宜，综合治理”。
希望回答能帮到你

谁走我都欣然松手 07-06 08:26

1.1屋面防水等级和设防要求屋面工程应根据建筑物的性质、工程特点、重要程度、使用功能要求、地区自然条件以及防水层耐用年限等，将屋面防水分为四个等级，并按屋面防水等级的设计要求，进行屋面防水工程的施工，屋面防水等级和设防要求是防水设计和施工人员的技术指南。
1.2 对屋面防水基层的要求平屋面的排水坡度为23%，当坡度为2%时，宜选用材料找坡；当坡度为3％时，宜选用结构找坡。
天沟、檐沟的纵向坡度不应小于1%，沟底落差不得超过200mm。水落口周围直径500mm范围内坡度不应小于5%，水落管径不应小于75mm，一根水落管的屋面最大汇水面积宜小于200m2。

梦绕魂牵 07-06 08:34

(1)防水层完成并经检验合格后，方可进行保护层或压载层的施工。
(2)屋面防水层的保护：在卷材防水层铺设完成后，应根据设计及有关规范的要求，在防水层上铺设保护层。对于上人屋面，可采用水泥砂浆、细石混凝土刚性保护层或块体材料作为保护层；对于非上人屋面，可根据需要涂刷表面着色保护涂料。

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