Central reservation channels
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Central reservation channels

A channel in the central reservation of roads is an open trench for rainwater diversion.
The road is designed with two separate lanes divided by a central reservation. The road slants towards the centre and a drainage channel (or trough) is built into the central reservation to collect water from the road. The trough is built with a sand filter at the bottom and a drain with slits, so that water from the road is filtered in a filter box and then seeps down to the drain. Rainwater is collected via wells at every 50-100m, and is then led to a retention basin. This type of road design is suitable for motorways, main roads and municipal roads, and can help prevent flooding and damage to the road.


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Senest redigeret: 04-02-2014