Variability of engineering geological parameters in flood facies sediments

Flood-deposited, muds are characterised by considerable variability of their lithological characters. This variability reflects the development of the river forming the terrace, the geological setting of the drainage basin and the morphology of the flood plain. The lithological variability of the muds causes great vertical and lateral variability in the engineering geological parameters. Therefore all calculations based on mean values obtained from laboratory analyses are prove to error. The most reliable values of parameters are obtained from fieldwork "in situ".