Introduction to Identification and Classification of Soil ...
2015-8-5 · measured, then use N = q+c,/4 for sand and fine to medium gravel and N = q+c,/5 for sand, and use Figure 1 for describing compactness. (f) Describe, if possible, appearance and structure such as angularity, cementation, coatings, and hardness of particles. (g) Examples of Sample Description: Medium dense, gray coarse to fine sand, trace silt ...