Module 1 : Site Exploration and Geotechnical Investigation
Lecture 5 : Geophysical Exploration [ Section 5.2 : Water table location, Pumping –in test, Common soil tests ]
   

A soil exploration report generally consists of the following.

Introduction, which gives the scope of the investigations.
Description of the proposed structure, the location & geological condition of the site.
Details of the field exploration programme, indicating the number of the borings, their locations & depths.
Details of the methods of exploration.

General description of the sub-soil conditions as obtained from in-situ test, such as standard penetration test, cone test.

Details of the laboratory test conducted on the soil samples obtained & the results obtained.
Depth of ground water table & the changes in water levels.
Discussions of the results.
Recommendations about the allowable bearing pressure, the type of foundation or structure.
Conclusions: The main findings of the investigations should be clearly stated.
  It should be brief but should mention the salient points.
  Conclusion
 

Geotechnical engineering is one of the most promising fields in engineering whereby, insitu investigation is the most powerful tool at the disposal of a geotechnical Engineer with which he can combat any unfavourable circumstance and solve any problem. No other technique can apprehend the behaviour of soils as meticulously as insitu investigation does because it tests the soil in its natural habitat which simulates its most probable response behaviour to external loading or disturbance. In this report the various methodologies involved in insitu investigation of soil, on land has been discussed with reference to the various sample collection techniques. This report also discusses in brief how the data collected from site investigations are to be represented in a borehole log.

 
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