The design of steep slopes constructed from cohesive fills and a geogrid

The shear strength and consolidation properties of compacted cohesive fills are reviewed and are found to vary greatly between different soil types. Recent research on dissipating excess pore water pressure in steep slopes constructed from cohesive fill is also reviewed. A simple decrease and practical design method for constructing steep slopes from cohesive fill is proposed. The design method estimates both the time to dissipate excess pore water pressures and the magnitude of the resultant settlements. It also estimated the required transmissivity required by the drainage elements. Guidance is also given on controlling seepage into the reinforced soil block. For the covering abstract see ITRD E125786.