Why Is It Useful to Know the Grain Size Distribution of the Soil?
In any case of specific application, the existing site-specific grain size distribution of the soil should always be determined, using the already known results from other sites in the vicinity could have distortive effects. This is illustrated by the following grain distribution curves of various soil samples collected in the German city of Hamburg. They clearly illustrate the variety of grain sizes and soil uniformity of soil samples collected from a relatively small geographical area.
Particle size distribution of Holocene sands in Hamburg [Hambu85b]
Particle size distribution of Pleistocene sands and gravels in Hamburg [Hambu85b]
Particle size distribution of glacial loam and glacial till in Hamburg [Hambu85b]