Environmental Engineering Reference
In-Depth Information
II (Above average)
Ordinary facilities
Evaluate design and
performance of nearby
structures
Exploration program
tailored to project
conditions by qualified
engineer
Run standard lab tests
on undisturbed
specimens
Measure pore pressure
in strength tests
Evaluate differences
between laboratory
test conditions and
field conditions
Determine FS using
effective stress
parameters and pore
pressures
Adjust for significant
differences between
field stress paths and
stress path implied in
analysis that could
affect design
Part-time supervision
by qualified engineer
No errors or omissions
Periodic inspection by
qualified engineer
No uncorrected
malfunctions
Selected field
measurements
Routine maintenance
0.4
0.4
0.4
0.4
0.4
III (Average)
Unimportant or
temporary
facilities with low
failure
consequences
Evaluate performance of
nearby structures
Estimate subsoil profile
from existing data and
borings
Index tests on samples
from site
Rational analyses using
parameters inferred from
index tests
Informal construction
supervision
Annual inspection by
qualified engineer
No field measurements
Maintenance limited
to emergency repairs
0.6
0.6
0.6
0.6
0.6
IV (Poor)
Little or no
engineering
No field investigation
No laboratory tests on
samples obtained at
the site
Approximate analyses
using assumed
parameters
No construction
supervision by
qualified engineer
No construction
control tests.
Occasional inspection
by non-qualified person
No field measurements
0.8
0.8
0.8
0.8
0.8
Note: The values in the dotted boxes provide a weight for each of the conditions described to facilitate the computation of the appropriate Category (or Level of Engineering) for
instances where the facility includes characteristics from various categories. The Category should equal the sum of all the weights.
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