Soil Chart

Use the soil classification chart below to identify the basic properties of the soil at the site.

Soil Classification
Soil Type	Friction Angle (Ref)	Bearing Capacity	Equivalent Fluid Pressure
Clay	27°	2,500 lb/ft² 119.700kPa	50 lb/ft² 7.9kN/m³
Mixed Soils	32°	3,500 lb/ft² 167.580kPa	35 lb/ft² 5.5kN/m³
Sand/Gravel	36°	4,000 lb/ft² 191.520kPa	30 lb/ft² 4.7kN/m³
Use the soil classification chart above to identify the basic properties of the soil at the site. These soil properties are approximate. For a thorough soil analysis, have a qualified geotechnical engineer conduct a site inspection.

Typical Friction Angle and Soil Unit Weights Compacted to 95% Standard Proctor
Soil Type	Soil Friction Angle	Soil Unit Weight (pcf)
Crushed Stone, Gavel	34° +	110-135
Clean Sands	32 - 34°	100-130
Silty Sands/Sandy Silt	28 - 30°	110-125
Sandy Clay	26 - 28°	100-120
Other Soils	Determined by testing
All soil friction angles and unit weights are provided as reference only and are subject to change based on geographic area and site conditions.