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Types de drainage pour la conception routière


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Bonjour, je suis traductrice et je travaille actuellement sur un document portant sur la conception géométrique des routes (traduction de l'anglais vers le français).

Dans ce document apparaît une liste de types de drainage, mais je n'arrive pas à trouver leurs équivalents en français!

Quelqu'un pourrait-il m'aider?

Les types en anglais sont:

- side drain (définit dans le document comme "Side drains are located beyond the shoulder breakpoint and parallel to the centre line of the road. While usually employed in cuts, they may also be used to run water along the toe of a fill to a point where the water can conveniently be diverted, either away from the road prism or through it, by means of a culvert.)

-edge drain (Edge drains are intended to divert water from fill slopes that may otherwise erode either because of the erodibility of the material or because they are subjected to concentrations of water and high flow velocities)

- Catchwater Drain (The catchwater drain, a berm located at the top of a cut, is to the cut face what the edge drain is to a fill. It is intended to deflect overland flow from the area outside the road reserve away from the cut face.)

Quelqu'un pourrait-il donc me dire ce que sont "side drain", "edge drain" et "catchwater drain"?

Merci d'avance! :-)

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