Street-Scale Sponge: The Whole Block Collects Water

A bird's-eye view of a block-scale rainwater management system. The image shows a continuous system: the roofs of all buildings are green roofs, where rainwater is first retained; overflow is directed by exposed downspouts to ground-level planting strips; sidewalks are permeable paving, and curbs have openings at intervals to guide runoff into linear rain gardens; these gardens are continuous along the street and expand into deeper detention basins at street corners; the basins are connected by underground pipes, finally converging into a sunken green space in the center of the block. The path of water can be traced on the image, from the rooftops all the way to the center. The types of plants change with the humidity of their location. Avoid: only creating isolated rain gardens without a system, making the water path unrecognizable, using impermeable paving, depicting the relationship between green spaces and streets as separate.

Translated from Chinese by AI.

一個以整個街廓為單位進行雨水管理的鳥瞰。畫面中可以看見一套連續的系統:各棟建築的屋頂是綠屋頂,雨水先被滯留;溢流由外露的落水管導到地面的植栽帶;人行道是透水鋪面,路緣每隔一段有開口把逕流導入線性的雨水花園;這些花園沿街連續並在街角擴大成較深的滯洪窪地;窪地之間以地下管路串連,最後匯入街廓中央的一座下沉式綠地。水的路徑在畫面上可以被追蹤,從屋頂一路到中央。植栽的種類隨著位置的濕度改變。避免:只做單點的雨水花園沒有系統、讓水的路徑無法辨識、使用不透水的鋪面、把綠地與街道的關係畫成分離。