Engineering Classification of Siliciclastic Sediments

Soil characteristics most used in engineering classification systems are particle size and consistency (Atterberg limits). These simple tests reflect the soil s physical properties, composition, moisture content, and so on. The information obtained by these tests enables an individual to assess the quality of a soil for construction or as a foundation. Several systems are in use in the United States and throughout the world, which have application in the 

10% Biogenic 50% Add the biogenic type to Note Optional to add T suchasTSW orTCH 

Examples Pelade clay CH with Add the biogenic type in description 

Pelagic clay CL with Poorly graded sand (SP) 

Nonskeletal carbonates Oolite sand (Ot) Ar onite needles (At) 

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