Landslides in Clays, 1846


Book Description




Landslides in Clays, 1846


Book Description




Steady Movement of Landslides in Fine-grained Soils


Book Description

Analysis of a possible mechanism for sliding of landslides on irregular slip surfaces shows how surface roughness can retard movement of landslides in fine-grained soils.




Landslides in Clays


Book Description




Landslides


Book Description

A guide to using the Public Record Office (PRO) in England for English or Welsh genealogical research, providing an introduction to PRO record classes of interest to North American researchers and identifying PRO records available in North American institutions. Includes advice for finding sources of emigration and immigration records, with appendices on local record offices in England and Wales and useful addresses. Annotation copyright by Book News, Inc., Portland, OR.




Residual Strength of Clay and Clay-shales by Rotation Shear Tests


Book Description

The objectives of this investigation were to develop a rotation shear machine to measure the residual shear strength (constant shearing resistance at which material undergoes continuous deformation under a constant state of effective stress) of clays and clay-shales; investigate testing errors; and measure residual shear strengths of representative types of highly plastic clays and clay-shales. In the rotation shear test, torque is applied to the bottom of the specimen and two force transducers measure the couple necessary to maintain the upper half of the specimen stationary. Disc-shaped or annular specimens with thicknesses from 0.1 to 2.5 cm and outside diameters of 7.11 cm can be tested. Variations in residual shear strength were investigated for normally consolidated versus overconsolidated specimens, for specimens sheared at different rates of peripheral displacement, and for specimens prepared by several different remolding procedures. (Author Modified Abstract).




Earth Pressure


Book Description

The subject of earth pressure is one of the oldest and most extensive chapters in soil mechanics and foundation engineering and is one of the pillars of structural engineering. First the development of earth pressure theory is comprehensively described. The descriptions range from the first approaches to the determination of earth pressure through continuum mechanical earth pressure models to the integration of earth pressure research into the disciplinary structure of geotechnics. The main part of the book comprises a selection of current calculation basics. The aim is to provide a collection of working instructions for foundation and structural engineers in construction companies, consultants and in building supervision as well as students. In order to further theoretical understanding, the essential basics of the determination of earth pressure are first presented. Then the most important processes for active and passive earth pressure and at-rest earth pressure for practical application are dealt with, with spatial effects also being taken into account. The book sets out to provide brief information about rarely encountered questions with references to further literature. In recent years, the dependency of earth pressure on displacement has been paid ever more attention. This applies not just to the passive but also to the active case. Questions are repeatedly passed to the DIN committee "calculation processes". A selection of these is dealt with in the commentary to DIN 4085, which came out in September 2018. The history of earth pressure theory is supplemented by 40 selected short biographies of scientists and practical engineers, who have taken up the subject and further developed it over the years. The book also has two appendices with terms, formula symbols and indices as well as earth pressure tables.




Selected Papers on Soil Mechanics


Book Description

A selection of papers by Professor AW Skempton, aiming to show his breadth of achievement in the field of soilmechanics. The chosen papers are reproduced chronologically, most of them falling into three subject groups: soil properties, stability of slopes, and foundations. This collection is useful to engineers, research workers, and students.




Shear Behavior of Composite Soils


Book Description

This book has the purpose of developing an understanding of the factors determining and influencing the shear behavior of soils, with emphasis on composite soils, as they are the most encountered materials in geological and geotechnical engineering in mountainous areas. This objective is reached by examining the soil compressibility, structure of shear zone and its evolution, and water content of shear zone and shear mode of soils together with analyses of the influences of intrinsic properties, e.g. Atterberg limits, particle size distribution, particle shape, and testing conditions, e.g. normal stress and shearing rate. An in-depth review is presented in an approximately chronological order and covers almost all the factors that are believed to influence the mechanical behavior of soils. The equipment and test techniques for shear strength of soils are detailed. The residual shear behavior of composite soil is investigated by means of a systematic laboratory testing program using a large ring shear apparatus and an intermediate direct shear box. The Fast Fourier Transform is employed for the first time to analyze the fluctuations of measured shearstress and discovers the close relationships with both intrinsic properties of soils and testing conditions. Although the book is aimed primarily at researchers in geological and geotechnical engineering, it contains material of interest to students of geology and soil science and also should be a useful reference for practicing engineers faced with composite soils.




A Selected Bibliography on Natural Disasters


Book Description

A bibliography of books on various natural hazards available in the Research Library of the Air Force Geophysics Laboratory.