Principles of Foundation Engineering 7th Edition by Braja M. Das presents a number of theories and empirical correlations where applicable. College students be taught that the soil parameters obtained from completely different empirical correlations will not be all the time the same. Offering more labored-out examples and figures than every other text, this book comprises a listing of references for additional data and research in every chapter.
This text provides the careful steadiness of current research and sensible area purposes that has made it the leading text in basis engineering courses. Featuring a wealth of labored-out examples and figures that assist students with theory and downside-solving expertise, the book introduces civil engineering college students to the elemental ideas and software of foundation analysis design.
Throughout, writer emphasizes the judgment wanted to properly apply the theories and analysis to the analysis of soils and basis design as well as the necessity for subject experience. Quite a few new case researches have been added to familiarize college students with the derivations from concept to practice. Over 30 new images have been added for higher understanding and visualization of the ideas and discipline practices.
New sections on liquidity index and activity have been added to the chapter on Geotechnical Properties of Soil (Chapter 1) as well as expanded discussions on hydraulic conductivity of clay, relative density, and the friction angle of granular soils. Expanded treatment of the weathering process of rocks (Chapter 2) is presented with new case study on bearing capacity failure in soft saturated clay, as well as a new discussion on the reduction factor method for estimating the ultimate bearing capacity of strip foundations on granular soil, have been added to the chapter on Shallow Foundations (Chapter 3).
There are new sections on the ultimate bearing capacity of weaker soils underlain by a stronger soil, seismic bearing capacity of foundations at the edge of a granular slope, foundations on rocks, and stress characteristic solution for foundations located on the top of granular slopes have been added to the chapter on Ultimate Bearing Capacity of Shallow Foundations: Special Cases (Chapter 4).
This text describe stress distribution due to a point load; and uniformly loaded circular and rectangular areas located on the surface of a Westergaard-type material has been added to the chapter on Allowable Bearing Capacity and Settlement (Chapter 5). Also included in this chapter is the procedure to estimate foundation settlement based on Pressuremeter test results.
It also explains lateral earth pressure due to a surcharge on unyielding retaining structures as well as the solution for passive earth pressure on a retaining wall with inclined back face and horizontal granular backfill using the method of triangular slices is now included in the chapter on Lateral Earth Pressure (Chapter 7). New case study as well as a more detailed discussion on the design procedure for geogrid-reinforced retaining walls has been added to Chapter 8 on Retaining Walls.
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