Translated from the Russian, this English edition of the text has been revised and updated. It covers such topics as: reasons for strengthening bases and foundations of buildings; behavioural features and foundations of in-service buildings; and stabilization of soils.Preface -- 1. Reasons for Strengthening Bases and Foundations of Buildings -- 1. Deformations of In-service Buildings -- 2. Load Increase Due to Building Additional Storey and Reconstruction -- 3. Standardising Stress Intensity on Foundation Soils -- 2. Condition of Bases and Foundations of Buildings under Reconstruction -- 1. Effect of Service Period of Buildings on Deterioration of Foundations -- 2. Design Parameters of Foundations -- 3. Changes in Stress on Foundation Soils after Reconstruction of Buildings -- 4. Utilisation of Reserve Bearing Capacity of Foundations in Reconstructions -- 5. Experience in Prescribing Permissible Stress on Foundation Soils after Reconstruction -- 3. Behavioural Features of Foundations of In-Service Buildings -- 1. Nature of Soil Reinforcement -- 2. Depth of Compressible Layer of Base -- 3. Variation in Moisture Regime of Soil and Water Table -- 4. Consolidation of Foundation Soils under Load -- 5. Effect of Long-term Loads on Mechanical Properties of Foundation Soils -- 4. Engineering-Geological Investigations and Inspections of Foundations of Reconstructed Buildings -- 1. Engineering-Geological Investigations -- 2. Investigation of Foundation Soils -- 3. Inspection of Foundations -- 4. Summary of Technical Feasibility of Reconstructing Buildings with Increased Loads -- 5. Designing Bases and Foundations of Buildings under Reconstruction -- 1. Sequence of Works while Designing Bases and Foundations -- 2. Summation of Loads for Computation of Foundations -- 3. Determination of Allowable Stress on Foundation Soils Compressed under Long-term Loading Conditions -- 4. Verification of Foundation Strength -- 5. Design of Bases According to Ultimate State -- 6. Reinforcementl“Á