Good Stuff Happens in 1:1 Meetings: Why you need them and how to do them well
GEOTECH.pdf
1. 1. Particle Size Classification of
Classification Systems
US Department of Agriculture (USDA) System
2. Unified Soil Classification System (USCS)
Flow chart for classifying coarse-grained (gravel or sand)
soils(more than 50 percent retained on No. 200 sieve).
3. Flow Chart for classifying fine-grained (silt or clay) soil (50 percent or more passes No.200
sieve)
Plasticity Chart