By R.F. Craig
This is often the 6th version of the bestselling textual content which has been broadly praised for its readability, intensity of rationalization and large insurance. As with past versions, the purpose is to give the basic ideas of soil mechanics and illustrate how they're utilized in functional events. this is often bolstered by way of the inclusion of labored examples through the e-book and various difficulties set for resolution through the reader. The publication assembles the entire crucial parts of an undergraduate path, top from the houses of soils and simple idea via to sensible purposes similar to holding buildings and foundations. Semi-empirical systems also are lined. recommendations handbook to be had, 0-419-22460-2.
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Additional resources for Soil Mechanics, 6th edition
00 Mg/m3? 67. Plot the dry density-water content curve and give the optimum water content and maximum dry density. Plot also the curves of zero, 5% and 10% air content and give the value of air content at maximum dry density. The volume of the mould is 1000 cm3. 72 Mg/m3. 54 Mg/m3 respectively. Determine the density index of the sand. REFERENCES 1. American Society for Testing and Materials Annual Book of ASTM Standards, Volume 04/08, Hitchin, Herts. 2. British Standard 1377 (1990) Methods of Test for Soils for Civil Engineering Purposes, British Standards Institution, London.
The hydraulic gradient is given by the difference in the steady state water levels in the boreholes divided by the distance AB. Dye or any other suitable tracer is inserted into borehole A and the time taken for the dye to appear in borehole B is measured. The seepage velocity is then the distance AB divided by this time. The porosity of the soil can be determined from density tests. 3 SEEPAGE THEORY The general case of seepage in two dimensions will now be considered. Initially it will be assumed that the soil is homogeneous and isotropic with respect to permeability, the coefficient of permeability being k.
2 Well pumping test. required on each line. A section through the well and two boreholes is shown in Fig. 2. Drawdown of the water table takes place as the result of pumping and when the steady state is established the water levels in the boreholes correspond to the new water table position. The boreholes are located at distances r1 and r2 from the well and the respective water table levels are at heights of h1 and h2 above the bottom of the stratum. : where h is the height of the water table at radius r.