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di Matteo, L. (author), Valigi, D. (author), Ricco, R. (author), Romeo, S. (author)The present work quantified the laboratory geotechnical variability by repeatability direct shear test (DS) on alluvial fine-grained soils. The effect of laboratory variability of geotechnical parameters (cohesion c' and friction angle ϕ′) on slope stability was investigated. A mixture of compacted fine sand (40%) and clayey silt (60%) taken...conference paper 2015