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Indian Institute of Technology Guwahati

Subsurface exploration :importance and techniques involved

Indian Institute of Technology Guwahati and NPTEL via Swayam


This course covers the requirement of thorough subsurface investigation, its important in planning and execution of the project. Classification of investigations to be adopted and challenges faced during many of the most complex civil engineering projects across the globe. Detailed discussion on methodologies starting with borehole drilling, rock drilling to advance methods such as electrical resistivity, geophysical tests, sounding, magnetic anamoly, dilatometer test, pressuremeter tests, ground penetrating radar will be covered along with numerical problems at various stages. In addition, dynamic testing on piles which is a very hot topic these days will be covered in the course.

Btech, Mtech, PhD students, industrial engineers, designers and people from field investigation 

PREREQUISITES: Engineering would be minimum qualification to known basic soil mechanics.


Week 1  :  Importance of site investigation, Classification of investigations  Week 2  :  Test Pits+ Borings, Ground water table and rock drilling, Standard Penetration Test
Week 3  :  Cone Penetration test, Dilatometer Test, Pressuremeter Test
Week 4 :  Seismic refraction survey, Seismic reflection survey, Electrical Resistivity Test, Magnetic anomaly test
Week 5  :  Suspension logging test, Gravity test, Offshore and onshore investigations
Week 6 
 :  Drill ships, barges, Jacket up platforms, positioning, Anchored structure, pipelines
Week 7  :  Terminologies in Pile foundation
Week 8  :  Pile drivability test, Pulse Echo Method (PEM)

Taught by

Prof. Abhishek Kumar

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