在建筑物附近的人行道和景观区域内不允许有路面排水系统。

Surface drainage across the sidewalks and landscaped areas adjacent to the building is not acceptable.

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隧道内由于排水系统不畅等等原因，导致隧道内路面破损严重。

As the poor drainage system and other reasons in the tunnel, result in a badly damaged of the pavement.

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市政整体排水系统程序如下：路面雨水→雨水井→沉泥井→过街排水管→排水检查井→地下排水主干线。

The whole city drainage system program is as follows: rain water wells road, clay and drain well across the street and drainage inspection wells and underground drainage main lines.

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