Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

India has massive infrastructure development plan in next decade. The safety, cost optimization saving construction time is challenges to engineers. The mass communication progress of 11th & 12th five year plans involves design and execution of large number of underpasses/flyovers through out country. The problems faced by adoption of foundation practice in India based on interpretation of BS 8006 / 1995 during execution are analyzed. Though not widely publicized, failures of walls or part of facial block wall are reported. To avoid contract schedules quick remedial measures are adopted, which based on consultants and facilities includes stone columns, lime piles, CC slab cover over foundation trench etc. A relook at entire problem for RE walls or steep slope foundation is reported. The site specific parameters namely construction season, rains during execution, desiccated expansive soils, settlement of parent subsoil for long life, environment – flood ponding are ignored. A sand-gravel 1.5 m pad foundation cannot take above factors in to account. The soil below the pad is rarely evaluated for differential settlement. Cyclically flooded poorly drained geographical areas particularly for long life structures, needs to be looked into. For Indian fast developing zones a common approach is evolved. This includes specific shallow depth exploration of RE wall foundations, environmental data collection of drainage, flooding and settlement analysis. Depth of trench is site specific depending on desiccated depth and permissible settlement. A model profile of subsoil, replaced relatively impervious fill in trench with or without Geofabrics is presented. The relook of site specific factors and control of settlement in present practice is justified by case studies presented.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 29th, 12:00 AM May 4th, 12:00 AM

Relook at Foundation Design of RE Structures in Indian Environment Based on Case Study

Chicago, Illinois

India has massive infrastructure development plan in next decade. The safety, cost optimization saving construction time is challenges to engineers. The mass communication progress of 11th & 12th five year plans involves design and execution of large number of underpasses/flyovers through out country. The problems faced by adoption of foundation practice in India based on interpretation of BS 8006 / 1995 during execution are analyzed. Though not widely publicized, failures of walls or part of facial block wall are reported. To avoid contract schedules quick remedial measures are adopted, which based on consultants and facilities includes stone columns, lime piles, CC slab cover over foundation trench etc. A relook at entire problem for RE walls or steep slope foundation is reported. The site specific parameters namely construction season, rains during execution, desiccated expansive soils, settlement of parent subsoil for long life, environment – flood ponding are ignored. A sand-gravel 1.5 m pad foundation cannot take above factors in to account. The soil below the pad is rarely evaluated for differential settlement. Cyclically flooded poorly drained geographical areas particularly for long life structures, needs to be looked into. For Indian fast developing zones a common approach is evolved. This includes specific shallow depth exploration of RE wall foundations, environmental data collection of drainage, flooding and settlement analysis. Depth of trench is site specific depending on desiccated depth and permissible settlement. A model profile of subsoil, replaced relatively impervious fill in trench with or without Geofabrics is presented. The relook of site specific factors and control of settlement in present practice is justified by case studies presented.