Soil mechanics | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-05

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Soil_mechanics


00:01:38 1 Genesis and composition of soils
00:01:48 1.1 Genesis
00:03:32 1.2 Transport
00:04:55 1.3 Soil composition
00:05:03 1.3.1 Soil mineralogy
00:07:09 1.3.2 Grain size distribution
00:08:54 1.3.2.1 Sieve analysis
00:10:21 1.3.2.2 Hydrometer analysis
00:11:25 1.3.3 Mass-volume relations
00:20:35 2 Soil classification
00:21:18 2.1 Classification of soil grains
00:21:44 2.1.1 Classification of sands and gravels
00:22:26 2.1.2 Atterberg limits
00:24:28 2.1.3 Classification of silts and clays
00:25:21 2.2 Indices related to soil strength
00:25:31 2.2.1 Liquidity index
00:26:21 2.2.2 Relative density
00:28:23 3 Seepage: steady state flow of water
00:29:27 3.1 Darcy's law
00:36:26 3.2 Typical values of hydraulic conductivity
00:37:24 3.3 Flownets
00:38:04 3.4 Seepage forces and erosion
00:38:45 3.5 Seepage pressures
00:39:51 4 Effective stress and capillarity: hydrostatic conditions
00:41:37 4.1 Total stress
00:43:07 4.2 Pore water pressure
00:43:16 4.2.1 Hydrostatic conditions
00:44:14 4.2.2 Capillary action
00:46:50 5 Consolidation: transient flow of water
00:48:52 6 Shear behavior: stiffness and strength
00:50:18 6.1 Friction, interlocking and dilation
00:52:11 6.2 Failure criteria
00:56:00 6.3 Structure, fabric, and chemistry
00:56:52 6.4 Drained and undrained shear
00:58:24 6.5 Shear tests
00:58:54 6.6 Other factors
01:00:10 7 Applications
01:00:19 7.1 Lateral earth pressure
01:01:19 7.2 Bearing capacity
01:02:23 7.3 Slope stability
01:03:04 8 Recent developments
01:05:31 9 See also



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SUMMARY
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Soil mechanics is a branch of soil physics and applied mechanics that describes the behavior of soils. It differs from fluid mechanics and solid mechanics in the sense that soils consist of a heterogeneous mixture of fluids (usually air and water) and particles (usually clay, silt, sand, and gravel) but soil may also contain organic solids and other matter. Along with rock mechanics, soil mechanics provides the theoretical basis for analysis in geotechnical engineering, a subdiscipline of civil engineering, and engineering geology, a subdiscipline of geology. Soil mechanics is used to analyze the deformations of and flow of fluids within natural and man-made structures that are supported on or made of soil, or structures that are buried in soils. Example applications are building and bridge foundations, retaining walls, dams, and buried pipeline systems. Principles of soil mechanics are also used in related disciplines such as engineering geology, geophysical engineering, coastal engineering, agricultural engineering, hydrology and soil physics.
This article describes the genesis and composition of soil, the distinction between pore water pressure and inter-granular effective stress, capillary action of fluids in the soil pore spaces, soil classification, seepage and permeability, time dependent change of volume due to squeezing water out of tiny pore spaces, also known as consolidation, shear strength and stiffness of soils. The shear strength of soils is primarily derived from friction between the particles and interlocking, which are very sensitive to the effective stress. The article concludes with some examples of applications of the principles of soil mechanics such as slope stability, lateral earth pressure on retaining walls, and bearing capacity of foundations.