Wyllie D.C. Foundations on Rock

Textbook. — 2nd edition. — Taylor & Francis e-Library, 2005. — ISBN: 0-203-47767-7.The first edition of Foundations on Rock was written during the period 1988 to 1990. In the decade that has passed since the initial material was collected on this subject, there has been steady development in the field of rock engineering applied to foundations, but no new techniques that have significantly changed design and construction practices. Consequently, the purpose of preparing this second edition, which has been written between 1996 and 1998, has been to update the technical material, and add information on new projects where valuable experience on rock foundations has been documented. The following is a summary of the material that has been added:Characteristics of rock foundations: expanded discussion on acceptable reliability levels for different types of structures in relation to the consequences of failure, as well as methods of risk analysis;
Structural geology: new material has been added on typical probability distributions for discontinuity lengths and spacing, and methods of collecting data on these features;
Rock strength and deformability: information is included on the deformation behavior of very weak rock that has been determined from in situ testing;
Investigation and in situ testing methods: the procedures for mapping geological structure has been extensively revised to conform to the procedures drawn up by the International Society of Rock Mechanics, and has now been consolidated in Appendix II. It is intended that this information will help in the production of standard mapping results that are comparable from project to project;
Bearing capacity, settlement and stress distribution: a list of projects with substantial foundations bearing on rock has been included describing the rock conditions and the actual bearing pressures that have been successfully used. Also, the section on the detection of karstic features and the design of foundations in this geological environment has been greatly expanded. With respect to prediction of foundation performance, an example of numeric analysis of the stability of jointed rock masses has been included;
Stability of foundations: an example has been prepared of probabilistic stability analysis to calculate the coefficient of reliability of a foundation. Also, a technique for assessing scour potential of rock is presented in detail;
Foundations of gravity and embankment dams: with the increasing need to rehabilitate existing dams either to meet new design standards, or to repair deterioration, a section on foundation improvement, scour potential and tie-down anchors has been added;
Rock socketed piers: for the design of laterally loaded rock socketed piers, new information is provided on p-y curves for very weak rock;
Tension foundations: the testing procedures and acceptance criteria for tensioned anchors has been updated to conform with 1990’s recommended practice;
Construction methods in rock: new information has been added on contracting procedures, and in particular Partnering.