Environmental Engineering Reference
In-Depth Information
Table 11.1 Earth structure categories and characteristics
Design
Level of engineering
Investigation
Testing
Analyses and documentation
Construction
Operation and monitoring
I (Best)
Facilities with high
failure
consequences
Evaluate design and
performance of nearby
structures
Analyze historic aerial
photographs
Locate all non-uniformities
(soft, wet, loose, high, or
low permeability zones)
Determine site geologic
history
Determine subsoil profile
using continuous sampling
Obtain undisturbed samples
for lab testing of
foundation soils
Determine field pore
pressures
Run lab tests on
undisturbed specimens
at field conditions
Run strength test along
field effective and total
stress paths
Run index field tests
(e.g., field vane, cone
penetrometer) to
detect all soft, wet,
loose, high, or low
permeability zones
Calibrate equipment
and sensors prior to
testing program
Determine FS using
effective stress
parameters based on
measured data
(geometry, strength, pore
pressure) for site
Consider field stress path
in stability determination
Prepare flow net for
instrumented sections
Predict pore pressures
and other relevant
performance parameters
(e.g., stress, deformation,
flow rates) for
instrumented section
Have design report clearly
document parameters
and analyses used for
design
No errors or
omissions
Peer review
Full-time supervision by
qualified engineer
Construction control
tests by qualified
engineers and
technicians
No errors or omissions
Construction report
clearly documents
construction activities
Complete performance
program including
comparison between
predicted and measured
performance (e.g., pore
pressure, strength,
deformations)
No malfunctions (slides,
cracks, artesian heads)
Continuous
maintenance by
trained crews
0.2
0.2
0.2
0.2
0.2
 
 
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