This book presents an overview of the rules for boring spacing, boring depths requirements along with sampling type and depths as well as its design applications, in the light of the experience accumulated in geotechnical investigation. The topics have been discussed in details. Also the number and type of field tests in soil form survey have been thrashed out her to see the variability of test procedure, apparatus used and their contribution in determining soil properties. The study reveals that there is no hard and fast rule for boring spacing or the depth to which boring are to be...