Soil Classification What is Soil Testing the Soil

  • Slides: 18
Download presentation
Soil Classification

Soil Classification

What is Soil?

What is Soil?

Testing the Soil Bearing Capacity Settling Characteristics Drainage

Testing the Soil Bearing Capacity Settling Characteristics Drainage

Site Planning Function of Structure Site Profile (Contour Map) Geological Information Soils Sample Data

Site Planning Function of Structure Site Profile (Contour Map) Geological Information Soils Sample Data

Soil Samples Represent the Site Taken about 1’-2’ below surface Boring samples are taken

Soil Samples Represent the Site Taken about 1’-2’ below surface Boring samples are taken at various locations and depths below the surface (subsurface) for deep foundations.

Unified Soil Classification System Coarse-Grained Soils Fine Grained Soils Highly Organic Soils Professional Development

Unified Soil Classification System Coarse-Grained Soils Fine Grained Soils Highly Organic Soils Professional Development Lesson ID Code: 8006

Unified Soil Classification System

Unified Soil Classification System

Sieve Sizes Gravels range from 3” down to the size of peas. Silt and

Sieve Sizes Gravels range from 3” down to the size of peas. Silt and clay can pass through the #200 sieve.

Grain Size Click here to open the Grain Size Chart.

Grain Size Click here to open the Grain Size Chart.

Gravel Identification

Gravel Identification

Sand Identification

Sand Identification

Graded Soil Well-Graded Soils-have a good representation of all particle sizes from the largest

Graded Soil Well-Graded Soils-have a good representation of all particle sizes from the largest to smallest Poorly-Graded Soils- two types Uniformly-has soil particles nearly the same size. Gap-Graded- contains both large and small particles but the graduation continuity is broken by the absence of some particle sizes.

Clean vs. Dirty Graded Soil Clean: contains little or no fines (<5%) Dirty: contains

Clean vs. Dirty Graded Soil Clean: contains little or no fines (<5%) Dirty: contains an appreciable amount of fines ( >12%)

Clay or Silt? Dry Strength – crushing characteristics Dilatancy – reaction to shaking Toughness

Clay or Silt? Dry Strength – crushing characteristics Dilatancy – reaction to shaking Toughness – consistency near plastic limit

Grain Shape

Grain Shape

Soil Color * Can vary with moisture content * May indicate the presence of

Soil Color * Can vary with moisture content * May indicate the presence of certain chemical or impurities * Dark brown /black may indicate organic material. * Gray, olive green indicate inorganic soils. * Gray-blue or gray-yellow indicates poor drainage. * Red or yellow may indicate iron oxides. * White to pink may indicate considerable silica, calcium carbonate, or aluminum compounds.

Plasticity Atterberg Limits: Plastic Limit-lowest moisture content at which soils can be rolled into

Plasticity Atterberg Limits: Plastic Limit-lowest moisture content at which soils can be rolled into 1/8” diameter thread without breaking. Liquid Limit- minimum moisture content at which soil will flow when a small shear or cutting force is applied.

Soil Groups Soil Type Gradation Liquid Limit Gravel- G Sand-S Silt-M Clay-C Organic O

Soil Groups Soil Type Gradation Liquid Limit Gravel- G Sand-S Silt-M Clay-C Organic O Peat- Pt Well Graded- W Poorly Graded - P LL over 50 - H LL under 50 -L

Soil Classification Soil Classification Soil classification Systematic groupingSoil Classification Soil Classification Soil classification Systematic grouping
Soil Types Classification and Testing Soil Classification UnderstandingSoil Types Classification and Testing Soil Classification Understanding
Classification Classification Classification Classification Features and labels GreenClassification Classification Classification Classification Features and labels Green
Classification 5 3 Classification of Biodiversity Classification ClassificationClassification 5 3 Classification of Biodiversity Classification Classification
Classification of Living Things CLASSIFICATION CLASSES Classification CLASSIFICATIONClassification of Living Things CLASSIFICATION CLASSES Classification CLASSIFICATION
Soil classification and soil maps Why a classificationSoil classification and soil maps Why a classification
Envirothon Soil Topics Soil Formation Soil Texture SoilEnvirothon Soil Topics Soil Formation Soil Texture Soil
Soil and Soil Formation What is soil SoilSoil and Soil Formation What is soil Soil
Assessing soil quality soil testing procedures soil testAssessing soil quality soil testing procedures soil test
Soil Testing Katy Tara Heather Soil Testing determinesSoil Testing Katy Tara Heather Soil Testing determines
Soil sampling and testing Soil sampling and testingSoil sampling and testing Soil sampling and testing
UNIT TESTING INTEGRATION TESTING AND SYSTEM TESTING TestingUNIT TESTING INTEGRATION TESTING AND SYSTEM TESTING Testing
Classification Alejandro Castillo Denisse Ceniceros Classification Classification isClassification Alejandro Castillo Denisse Ceniceros Classification Classification is
Graph Classification Classification Outline Introduction Overview Classification usingGraph Classification Classification Outline Introduction Overview Classification using
Classification Classification Classification is the process of groupingClassification Classification Classification is the process of grouping
ZOOLOGICAL CLASSIFICATION CLASSIFICATION ITS BASIS Biological Classification isZOOLOGICAL CLASSIFICATION CLASSIFICATION ITS BASIS Biological Classification is
Classification Methods Definition of Classification Classification or moreClassification Methods Definition of Classification Classification or more