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รายละเอียดของโปรแกรม
 INSITU
- Interpretation of static and dynamic geotechnical in situ
tests according to the most commonly adopted methods - STP tests:
relative density, friction angle, effective and total vertical
stress, constrained modulus, Young's modulus, cone resistance,
shear modulus, cyclic modulus of deformation, upper limit
allowed for the subsidence/load ratio. - CPT tests: friction
angle, drained compressibility and relative density, undrained
shear strenght, compressibility, sensitivity and
overconsolidation - DP tests: all the information for the SPT
tests is supplied - the program can be adapted to any measuring
apparatus through correlation coefficients.
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The INSITU program
interprets statical and dynamical geotechnical in situ tests.
In order to interpret the SPT tests, the program utilises the
main correlations that are normally used to determine the
geotechnical parameters of a soil.
 One
should enter the geometrical and geotechnical parameters
pertaining to the stratigraphy surveyed trough drilling and the
number of blows relative to each test; some corrective
parameters can be entered that enable one to limit the
perturbations in the interpretation of the data caused by the
way the test is performed and the type of instrument that is
used.
Based on this simple
information, the program determines the relative density, the
friction angle, the effective vertical and total stress, the
confined modulus, Young's modulus, the upper limits of the
settlement/admissible load ratio, the point resistance, the
dynamic shear modulus and the cyclical stress of the terrain
traversed, when possible using different calculation methods to
permit comparison of the results.
When interpreting the CPT
test results, the program divides, as normal practise, granular
terrains with a prevalence of sand from cohesive terrains made
up mostly of clay.
For granular terrains, it is able to determine (from the data
that has been entered) the friction angle, the drained
compressibility and the relative density, while for cohesive
terrains it evaluates the shear resistance in undrained
conditions, compressibility, sensitivity and the degree of over-consolidation.
For the interpretation of
this test the data required are, yet again, extremely simple:
the classification of the terrain that has to be used, the
measured test values and any correction factors that prove
necessary to limit perturbations in the interpretation of the
data.
With the DP test
interpretation, which is mainly used in granular terrains and to
localise resistant strata, the program supplies all the
information previously mentioned for the SPT test.
The INSITU program can be
adapted to any measurement instrument.
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