Volumetric weight of soil
In soil mechanics it is often required to determine the total weight of a soil body. This can be calculated […]
Geotechnical Engineering
CIVIL ENGINEERS ARE IN THE MIDST of a construction revolution. Heavy structures are being located in areas formerly considered unsuitable from the standpoint of the supporting power of the underlying soils. Earth structures are contemplated that are of unprecedented height and size; soil systems must be offered to contain contaminants for time scales for which past experience is either inadequate or absent. Designs must be offered to defy the ravages of floods and earthquakes that so frequently visit major population centers.
All structures eventually transmit their loads into the ground. In some cases this may be accomplished only after circuitous transfers involving many component parts of a building; in other cases, such as highway pavements, contact is generally direct. Load transfer may be between soil and soil or, as in retaining walls, from soil through masonry to soil. Of fundamental importance is the response that can be expected due to the imposed loadings. It is within this framework that geotechnical engineering is defined as that phase of civil engineering that deals with the state of rest or motion of soil bodies under the action of force systems.
Density of Soil
For the description of the density and the volumetric weight of a soil, the densities of the various components are
Porosity
Soils usually consist of particles, water and air. In order to describe a soil various parameters are used to describe
Classification of Soil Mechanics
2.1 Grain size Soils are usually classified into various types. In many cases these various types also have different mechanical
Why Soil Mechanics ?
Soil mechanics has become a distinct and separate branch of engineering mechanics because soils have a number of special properties,
Introduction of Soil mechanics
The discipline Soil mechanics is the science of equilibrium and motion of soil bodies. Here soil is understood to be
Weight and Mass Relationships of soil
The water content (or moisture content), denoted w, is the only relationship involving weights or masses. It is the ratio
WeightVolume Problems Involving Defined Quantities of soil
Weight-volume problems may be divided into two categories: those where there is a defined quantity of soil, and those where the
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WeightVolume Problems Involving Only Relationships
If only relationships (e.g., void ratio or unit weight) are given, the quantity of soil is indefinite and only other
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