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Effective Stress is the grain to grain contact of soil particles. the higher the effective stress, the stronger the soil. effective stress at a certain depth is calculated as follows: Effective stress = total stress - pore water pressure the pore water pressure is often taken as water table. pore water pressure has a negative effectice on effective stress, as it hinders grain to grain contact.
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Why study soil mechanics as a separate discipline?
Soil Mechanics like fluids mechanics and structural mechanics and engineering surveying are the core disciplines of civil engineering for well over 70 years from the days of Terzaghi, father of soil mechanics. It is a separate discipline since soil behaviour cannot be predicted like the methods used for testing the behaviour of structures and fluids,yet ideas similar to these disciplines have been used but the testing and classification of soil had to be on its own. Now the discipline has a broad base to be known as geotechnics or geotechnical engineering.
What is quick condition in soil mechanics?
Quick Condition is a condition which arises due to presence of water/moisture in a soil mass. When the pore water pressure is so much that it equals the total stress in the soil mass then the effective stress becomes zero as a result of this and there is so force which can hold the particles together and prevent sliding away of the soil particles. In such a case the soil mass behaves almost as a liquid and there is no strength in it. For eg, the slopes in soil mass become unstable in rainy seasons and slope failures occur on account of this. As soon as the water content is reduced the soil's effective stress is increased thereby resulting in stability.
What is unsaturated soil mechanics?
Unsaturated soil mechanics is the study of the behavior of soil when it contains both air and water in its pore spaces. This differs from saturated soil mechanics, which deals with soil that is completely saturated with water. Understanding unsaturated soil mechanics is crucial in various geotechnical engineering applications, such as slope stability analysis and foundation design.
What is preconsolidation stress in soil?
Preconsolidation stress in soil refers to the maximum stress a soil has experienced in the past, which caused it to be compacted or consolidated. This stress is a key parameter in understanding the behavior of soil under new loading conditions, and can help predict the potential for further settlement or deformation.
Why is soil management important?
Soil management is important because it helps protect and preserve the soil health, which is crucial for sustainable agriculture. Effective soil management can help reduce erosion, improve water infiltration, increase nutrient availability, and enhance crop productivity. It also plays a key role in mitigating climate change by sequestering carbon in the soil.
Why the principle of effective stress important in soil mechanics?
coz at the end of structure construction soil grains are the one whic carry the load so useful in analysis of bearing capacity of granular soil
Why study soil mechanics as a separate discipline?
Soil Mechanics like fluids mechanics and structural mechanics and engineering surveying are the core disciplines of civil engineering for well over 70 years from the days of Terzaghi, father of soil mechanics. It is a separate discipline since soil behaviour cannot be predicted like the methods used for testing the behaviour of structures and fluids,yet ideas similar to these disciplines have been used but the testing and classification of soil had to be on its own. Now the discipline has a broad base to be known as geotechnics or geotechnical engineering.
Soil liquefsction occurs when?
A state of 'soil liquefaction' occurs when the effective stress of soil is reduced to essentially zero, which corresponds to a complete loss
What is quick condition in soil mechanics?
Quick Condition is a condition which arises due to presence of water/moisture in a soil mass. When the pore water pressure is so much that it equals the total stress in the soil mass then the effective stress becomes zero as a result of this and there is so force which can hold the particles together and prevent sliding away of the soil particles. In such a case the soil mass behaves almost as a liquid and there is no strength in it. For eg, the slopes in soil mass become unstable in rainy seasons and slope failures occur on account of this. As soon as the water content is reduced the soil's effective stress is increased thereby resulting in stability.
Why soil mechanics as a separate discipline from the general mechanics?
Soil mechanics is separate from general mechanics because soil is a complex material with unique properties like porosity, compressibility, and shear strength that require specialized study. Understanding the behavior of soil is crucial for geotechnical engineering projects such as foundations, retaining walls, and earth dams, making soil mechanics an essential discipline in civil engineering.
What has the author M Budhu written?
M. Budhu has written: 'Foundations and earth structures' -- subject(s): Foundations, Soil mechanics 'Soil mechanics and foundations' -- subject(s): Foundations, Soil mechanics
Why are soil and soil mechanics importance to the civil engineers?
Sand
What is unsaturated soil mechanics?
Unsaturated soil mechanics is the study of the behavior of soil when it contains both air and water in its pore spaces. This differs from saturated soil mechanics, which deals with soil that is completely saturated with water. Understanding unsaturated soil mechanics is crucial in various geotechnical engineering applications, such as slope stability analysis and foundation design.
Is codes for soil mechanics?
yes
What has the author Braja M Das written?
Braja M. Das has written: 'Fundamentals of soil dynamics' -- subject(s): Soil dynamics 'Mechanics for engineers' -- subject(s): Applied Mechanics, Statics, Dynamics 'Principles of foundation engineering' -- subject(s): Foundations 'Civil Engineering' 'Soil mechanics' -- subject(s): Soil mechanics, Laboratory manuals 'Earth anchors' -- subject(s): Foundations, Anchorage (Structural engineering) 'Mechanics for engineers' -- subject(s): Statics, Applied Mechanics 'Shallow foundations bearing capacity and settlement' -- subject(s): Foundations, Settlement of structures, Soil mechanics 'Microevolution' 'Introduction to geotechnical engineering' -- subject(s): Soil mechanics, Engineering geology 'Fundamentos de Ingenieria Geotecnica' 'Principles of geotechnical engineering' -- subject(s): Soil mechanics, Engineering geology 'Principles of soil dynamics' -- subject(s): Soil dynamics 'Solutions manual'
What has the author W L Schroeder written?
W. L. Schroeder has written: 'An evaluation of Palouse clay as a foundation material' -- subject(s): Foundations, Soil mechanics, Testing, Clay 'Soils in construction' -- subject(s): Foundations, Soil mechanics, Building 'Application of geotechnical data to resource planning in southeast Alaska' -- subject(s): Soil mechanics, Slopes (Soil mechanics), Soil stabilization
Mechanics of materialbeersecond edition?
a10kp axial loads is applied to a short wooden post which is supported by a concrete footing resting on undistributed.determine a)the maximum beering stress on the concrete footing. b)the size of footing for which the avareg bearing stress on the soil is 20kpsi
