Calverton Tip Drainage Channels KEY DETAILS PROJECT NAME : Calverton Tip Drainage Channels CLIENT : Walters UK for Coal Authority LOCATION : Calverton, Nottingham PROJECT CATEGORY : SUDS and Drainage Channels Colliery shale and sandy soils have one thing in common; both are highly susceptible to erosion by flowing water. Both soil types were present on site. Initial options included rock riprap lining, but the client and consultants preferred a more natural vegetated option. Analysis of the channels revealed that even if vegetation could be established the un-cohesive sandy soils would not remain stable as the predicted flow velocities would be too extreme for a grass cover alone to withstand. Salix were approached to provide an initial desig

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