发布时间:2025-02-01 13:55:48
在一层的地面下挖一条地沟,地面和两边用砖砌起来,管子放进去后,上面盖上预制的混凝土盖板,然后把土回填起来。如果是北方,记得管道要做保温。
有谁知道高层建筑外墙雨水管道设计用加厚型upvc管材其壁厚应该是多少啊
2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48 2025-02-01 13:55:48