160
11 Dam Stability Failures
Table 11.4 (continued)
Category
Design
Build
Operate
D1
D2
D3
CO
OM
Investigation Testing
Analyses and
documentation
Construction Operations
and
monitoring
Determine
site geologic
history
Calibrate
equipment
and sensors
prior to tests
Predict pore
pressure and
other
relevant
performance
parameters
for
instrumented
sections
Construction
report clearly
documents
construction
activities
Determine
subsoil
profiles using
continuous
sampling
Have design
report clearly
document
parameters
and analyses
used for
design
Obtain
undisturbed
samples for
testing
No errors or
omissions
Determine
field pore
pressure
Peer review
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
(continued)