Manual on Deformation Controlled Densified Stone (DDS) Columns

Professor Ramanath Keshavarao Katti is Professor Emeritus of the Indian Institute of Technology, Mumbai and honorary fellow of the Indian Geotechnical Society. He received his PhD in soil engineering and his master's degree in highway engineering from Iowa State University, USA. Professor Katti has published extensively, both journal papers and book publications. At present he is Director and Consultant to UNEECS Pvt. Ltd. and Advisor to Simplex Concrete Piles (I) Ltd. Professor Dinesh Ramanath Katti is Associate Dean of Research at the College of Engineering and Architecture, chairman of the Department of Civil Engineering at North Dokota State University, USA. He received his doctorate degree in geotechnical engineering/geomechanics from the University of Arizona, USA. Dr. Ananad Ramanath Katti is professor of Civil Engineering, Principal of Datta Meghe College of Engineering and Technical Director of Airoli Advanced Computer Center Pvt. Ltd. He received his PhD degree in soil mechanics and foundation engineering from the Indian Institute of Technology, Delhi, India. Prashant J. Navalakha obtained his master's degree in geotechnical engineering from the Indian Institute of Technology, Bombay, India. He is presently working with Simplex Concrete Piles (I) Ltd. Zeeshan Shaikh is presently working as Geotechnical Engineer at Simplex Concrete Piles (I) Ltd. He received his master's degree from the Indian Institute of Technology, Bombay, India.

Foreword Preface Acknowledgements 1. Introduction 2. Computation of length, L and load capacity 3. Procedure for design of deformation controlled densified stone columns (DDS) in weak deep seated granular media 4. Estimation of deformation under a loaded area on a granular media 5. Theoretical aspects based on right circular cone phenomenological concept properties of granular material of different sizes and their application to situations where controlled deformations are envisaged 5A-1. Stress Distribution 5A-2. Deformation properties of a granular column under Newtonian Gravitational field 5A-3. Deformation behaviour of stone column under different conditions of side surcharge 5A-4. Monograph on particulate approach to analysis of stone columns with and without geosynthetic encasing 5A-5. Effective depth of vertical drain performance in soft marine clay deposits 5A-6. Vertical sand/granular drains for soil improvement 5A-7. Load - settlement behaviour of a prestressed granular foundation under cyclic loading 5A-8. Stress deformation and strength characteristics of granular material 5A-9. Studies of shear strength properties of large size granular material with and without 5A-10. Design and construction of a graded rockfill embankment to support a rigid pavement for an express highway - a case history 5A-11. An over view on reinforced granular soil technology for design and construction of approach embankments for fly - overs 5A-12. Deformation based bearing capacity of granular media accounting for gravity effect 5A-13. Factors influencing vertical reinforcement for the construction of a soil reinforced retaining structure for deep excavations in granular media 5A-14. A bird's eye view of emerging area of modern geotechnical engineering 5A-15. Prefabricated D.D.S. columns with external geogrid reinforcement (encasement) for construction in soft marine deposits and Foundation System in silty sand deposits. 5A-16. Settlement of layered granular media under stress due to large diameter ring foundation based on allowable bearing capacity charts and effective depth of settlement References Index About the Authors