Abstract: The shfting of course of the Yamuna River at Agra by over 800 m during the last four years had threatedned the stabililty of transmission towers of a 220 KV - transmission line on the river bank. After last year\'s monsoons, the river had shifted dangerously close to the existing towers.\n \nCengrs Geotechnica Pvt. Ltd. was awarded the design and construction contract for providing deep pile foundations for the towers that extended below the level of maximum scour. In order to ensure minimum disruption of poer supply, the new towers were first installed and then charged, after which teh existing towers were dismantlled.

Citation : Sanjay Gupta and Ravi Sundaram (1994), “Pile Foundations Save Transmission Towers at Agra”, Civil Engineering and Civil Construction Review, August, 1994, pp 45-46.

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Synopsis: Modern foundation engineering can come to the rescue of structures that have experienced significant foundation distress or failure. Detailed investigation of cause and mode of failure together with careful planning and sound engineering practice is the key to successful execution of the foundation strengthening process. Specific case histories of some projects in Delhi and Bihar are described explaining the nature of foundation distress and methodology adopted to stabilize the structures and ensuring adequate foundation performance.

Citation : Sanjay Gupta and Ravi Sundaram (1992), “Recent Trends in Foundation Strengthening”, Civil Engineering and Civil Construction Review, October, 1992, pp 31-33.

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Synopsis: This paper discusses situations where under-reamed pile foundations have been effectively used and found to be superior to other foundation types. The use of under-reamed piles, which are conventionally considered suitable for expansive clays, have been extended effectively over the past several years to the other soil conditions also. The use of these piles is largely a function of economy, time factors, site constraints etc. Some of the projects in Delhi and other areas where under-reamed piles have been used are discussed in brief.

Citation : Sanjay Gupta (1986), “For which Soil Conditions are Under-Reamed Pile Foundations Superior to Other Foundation Systems”, Proceedings, Indian Geotechnical Conference, IGC-1986, Synthesis Paper Vol.III pp 97-101.

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Synopsis : The evaluation of capacity of offshore piles should be a continual process. After the pile capacity has been computed in the design office, the capacities should be verified and re-evaluated in the field using dynamic pile monitoring techniques. The design should allow for revising the pile capacity based on a detailed study of the driving data. A database of offshore pile installation experience should be accumulated so as to advance the state-of-the-art in the Indian offshore areas.

Citation : Ravi Sundaram and Niaz Ahmad (1986), “How Best Can One Estimate the Load Carrying Capacity of Piles Which Support Offshore Structures”, Proceedings, Indian Geotechnical Conference, IGC-1986, Response Paper Vol.II, 183-186.

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Brief:Modern Foundation engineering can come to rescue of structures that have experienced signinficant foundation distress or failure.Detailed investigation of cause and mode of failure together with careful planning and sound engineering practice is the key to successful execution of the foundation strengthening process.Specific case histories of some projects in Delhi and Bihar are described explaining the nature of foundation distress and methodology adopted to stabilize the structures and ensuring adequate foundation Performance.

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Brief:The shifting of course of the Yamuna River at Agra by over 800 m during the last four years had threatened the stability of transmission towers of a 220 KV-tansmission line on the river bank.After last year's monsoons ,the river had shifted dangerously close to the existing towers.

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Brief:A thorough geotechnical investigation is a pre-requisite for a reliable,safe and economical foundation design.It is important that whatever is envisaged at the investigation and design stage should translate into construction that is in sync with the design concepts,assumptions and predicted foundation behaviour.

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