Life of Any civil engineering project when a systematic and comprehensive procedure
of of determining the
engineering characteristics of subsoil layer is carried out . Field
and laboratory tests are necessary to decide
upon
the
appropriate formulation
system for the proposed structure based on the strength and settlement . In
geotech
investigation involves complete soil investigation for various type of structure
i.e multistoried,
highways, bridges or
any other structure using borehole sampling
technique i.e. SPT . The drilling of
boreholes is done by
shell and auger method and mechanized boring method upto 60 mts for collection
of sample required for tests of
various physical
characteristics. The fields tests includes standard penetration
tests
( SPT) , field vane shear
test
using disturbed
and
undisturbed samples. The
laboratory
testing is conducted
for characteristics and
estimation of various
engineering
properties of sub soil layers i.e. strength parameters,
consolidation
properties, atterberg limits ,
strength parameters,
swell index , grain size analysis and chemical
properties . It also
includes
design and
excavation of pile foundation
and conducting pile load tests .