- Coarse and Fine grained soils
- Coarse grained soils
- Fine grained soils
SPT correlations are typically derived based on case studies or field tests in a specific soil types. As a result, most of the SPT correlations are only valid for one or two soil types. In Dartis SPT database of correlations, some correlations are applicable for Coarse-Grained soils, some correlations are applicable for Fine-Grained soils and some correlations are applicable for both Fine-Grained and Coarse-Grained soils.
Dartis SPT automatically filters available correlations based on soil grain size (e.g Coarse / Fine / Coarse and Fine).