238
15 Risk-Informed Decision Making
Table 15.7 (continued)
Obtain
undisturbed
samples
for testing
No errors or
omissions
Determine
field pore
pressure
Peer review
0
0.2
0
0.2
0
II
Above
Average
Evaluate
design and
performances
of
nearby
structures
Run
standard
tests on
undisturbed
specimen
Determine
FS using
effective
stress
parameters
and pore
pressure
Part time
supervision
by
qualified
engineer
Periodic
inspection
by qualified
engineer
Exploration
program
tailored to
project
conditions
by qualified
engineer
Measure
pore
pressure in
strength
tests
Adjust for
significant
differences
between
field stress
paths and
stress path
implied in
analysis
that could
affect
design
No errors
or
omissions
No
uncorrected
malfunctions
Evaluate
differences
between
laboratory
tests
conditions
and field
conditions
Selected
field
measurements
Routine
maintenance
Evaluate
performances
of
nearby
structures
Index tests
on samples
from site
Rational
analyses
using
parameters
inferred
from index
tests
Informal
constructi
on
supervision
Annual
inspection
by qualified
engineer
Estimate
subsoil
profile from
existing
data and
borings
No filed
measurements
0.4 to 0.5
0.2
0.4
0.2
0.4
(continued)