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    天溝外排水系統是怎么樣的?
    文章來源:www.rgukz.com  作者:瑞晨建材  更新時間:2018-08-02 11:21:41  Tag:  瀏覽:15

     

    天溝外排水系統
    Outer drainage system
    天溝外排水即利用屋面構造上所形成的天溝本身容量和坡度,使雨雪水向建筑物兩端(山墻、女兒墻方向)泄放,并經墻外立管排至地面或雨水管道。由天溝、雨水斗、排水立管和排出管組成。適用于長度不超過100m的多跨工業廠房,以及房內不允許布置雨水管道的建筑。
    The outer drainage of the roof is to use the capacity and slope of the roof of the roof, so that the rain and snow water is discharged to the two ends of the building (the direction of the parapet and the parapet), and through the wall outside the wall to the ground or the rainwater pipe. The utility model is composed of a gutter, a rain bucket, a drainage riser and an exhaust pipe. It is suitable for multi span industrial buildings with a length of not more than 100m, and a building with no rainwater pipes in the room.
    在工程實踐中常采用天溝外排水的方式排除大型屋面的雨雪水,采用天溝外排水不僅能消除廚房內部檢查井冒水的問題,而且具有節約投資、節省金屬材料、施工簡便,利于合理地使用廠房空間和地面以及為廠區雨水系統提供明溝排水或減少管道埋深等優點;但若設計不善或施工質量不良,會出現天溝翻水、漏水等問題。
    In the engineering practice, the rain and snow water of large roofs is often eliminated in the way of draining the large roof, and the use of the outer drain can not only eliminate the problem of checking the water in the well inside the kitchen, but also saves the investment, saves the metal material and the construction is simple, and is beneficial to the rational use of the space and ground of the plant and the rain water system in the factory area. Open ditch drainage or reduce the buried depth of pipelines and other advantages; but if the design is not good or the construction quality is poor, there will be problems such as overturning, leakage and so on.
    天溝外排水,應以建筑的伸縮縫或沉降縫作為屋面分水線。天溝的流水長度,應結合天溝的伸縮縫布置,一般不宜大于50m,其坡度不宜小于0.003。為防止天溝末端處積水,應在女兒墻、山墻上或天溝末端設置溢流口,溢流口比天溝上檐低50~100㎜。
    Drainage outside the gutter should be based on expansion joints or settlement joints of buildings. The length of the gutter should be combined with the expansion joint layout of the gutter, generally not more than 50m, and its slope should not be less than 0.003. In order to prevent water from accumulating at the end of the ditch, a spillway should be set up at the parapet wall, gable wall or the end of the ditch. The spillway is 50-100_lowerthan the eaves above the ditch.
    立管直接排水至地面時,需采取防沖刷措施,在濕陷性土壤地區,不準直接排水,冰凍地區立管需采取防凍措施。
    When the riser is directly drained to the ground, it is necessary to take anti-scouring measures. In collapsible soil areas, no direct drainage is allowed. In frozen areas, the riser should take anti-freezing measures.

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