Check with your engineering professional or Arbor Rock for guidance about your situation. S oils are visually classified for engineering purposes by the Unified Soil Classification System. Grain-size analyses and Atterberg Limits tests often are performed on selected samples to aid in classification. The classification system is briefly outlined on the chart below. Graphic symbols are used in the boring logs presented in this chart.
Soils highlighted in tan are ideal for ballfields.
Cobbles 12 in. Gravel 3 in.