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A BRIGHT NEW WAVE IN GEOTECHNICS

 
RAPID NON-INTRUSIVE INVESTIGATION AND DESIGN OPTIMIZATION

Advanced CSW testing provides high quality stiffness data to optimise a wide
range of engineering solutions and allows non-intrusive site assessments using
shear wave velocity profiles. ACSW stiffness data will greatly improve the
accuracy of simple limit state analyses as well as being of sufficient quality
for input to complex analyses such as Finite Element modelling.


Rapid Deployment   Accurate Data   Economic Profiling
 




RESOURCES

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OUR RESOURCES

GSS has produced a range of straightforward guidance documents explaining the
technical basis for ACSW measurement and its data application.
Find out more here
 


Contact us today for a ground profiling estimate.
Call 407-342-7737



ADVANCED CONTINUOUS SURFACE WAVE TESTING

 
Specialist Advanced Continuous Surface Wave (ACSW) non-intrusive ground
profiling technologies


RAPID DEPLOYMENT

Capture realtime stiffness & Vs profiles in less than 10 minutes


ACCURATE DATA

Get high quality stiffness & Vs data as used for major projects around the world
 


ECONOMIC RESULTS

See stiffness & Vs profiles to up to 30-feet depth or more at a fraction of the
cost of pressuremeter testing
 
 


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REALTIME STIFFNESS PROFILES IN LESS THEN 10 MINUTES

Continuous Surface Wave (CSW) testing measures ground stiffness from surface
down to depths of 20 to 30-feet or more.

Testing can be undertaken from a self-contained 4WD test vehicle wherever access
is possible to within 30 feet of test locations, which will ensure the fastest
production rates. However, since the test equipment is portable, testing can be
undertaken remotely from the test vehicle where 4WD access is not possible.

Our advanced C-DAS data acquisition software completes each test in around 5
minutes, with preliminary results being immediately displayed. On favourable
sites with 4WD access, 12 or more tests per shift are usually possible, allowing
rapid site characterization.

Continuous Surface Wave Testing Our Company Close

HIGH QUALITY GROUND STIFFNESS DATA

Continuous Surface Wave (CSW) testing provides in-situ stiffness profiles
without boreholes or sampling and the associated potential for sample
disturbance. Stiffness is averaged over the test length, normally 10-feet, so
gives a representative bulk sample, avoiding the problems of very local
variation in ground conditions.

Unlike many other stiffness measurements, CSW provides a small-strain stiffness
(G0), a 'baseline' measurement at a known strain, which can be readily adjusted
('strain softened') to actual design strains. GSS provides stiffness data in an
easy-to-use spreadsheet, allowing the user to input design strains. Data is also
ideal for 3D ground modelling or BIM applications.

There is extensive published literature validating the equivalence of CSW data
with other slower and more expensive techniques such as downhole seismic testing
or large-scale load tests.

Continuous Surface Wave Testing Our Company Close

COST-EFFECTIVE GROUND PROFILING

Continuous Surface Wave (CSW) testing does not require boreholes or the use of
additional equipment. Combined with the speed of testing (typically 12 per
shift), this makes it an extremely cost-effective way of providing high quality
stiffness data. CSW also provides non-intrusive shear wave velocity (Vs)
profiles for seismic design, liquefaction assessment and preliminary ground
characterization using published correlations with soil parameters. In rock. Vs
profiles can be used to assess rock quality and rippability.

The non-intrusive nature of CSW also means that it is sustainable and low risk,
hence it can be used in many situations where the presence of sensitive
underground utilities or structures would make other types of testing
impossible. The portable nature of equipment and speed of testing means it is
ideal for use in difficult to access, time-restricted situations such as
highways or active construction sites.

The value of CSW test is that it provides a stiffness profile to depths of 20 to
30-feet or more of equivalent quality to the most expensive stiffness
measurement techniques; this means that many more data points can be collected
in less time than conventional stiffness tests such as pressuremeter or direct
(plate) load tests.

Continuous Surface Wave Testing Our Company Close


REALTIME STIFFNESS PROFILES IN LESS THEN 10 MINUTES

Continuous Surface Wave (CSW) testing measures ground stiffness from surface
down to depths of 6 to 10m or more.

Testing is undertaken from a self-contained 4WD test vehicle wherever access is
possible to within 10m of test locations to ensure the fastest production rates.
However as test equipment is portable testing can be undertaken remotely from
the test vehicle where 4WD access is not possible.

Our advanced C-DAS data acquisition software completes each test in around 5
minutes, with preliminary results immediately displayed. On favourable sites
with 4WD access 12 or more tests per shift are usually possible, allowing rapid
site characterisation.

Continuous Surface Wave Testing Our Company Close

HIGH QUALITY GROUND STIFFNESS DATA

Continuous Surface Wave (CSW) testing provides in-situ stiffness profiles
without boreholes or sampling and the associated potential for sample
disturbance. Stiffness is averaged over the test length, normally 3m, so gives a
representative bulk sample, avoiding the problems of very local variation in
ground conditions.

Unlike many other stiffness measurements CSW provides a small-strain stiffness
(G0), a 'baseline' measurement at a known strain which can then be readily
adjusted ('strain softened') to actual design strains. GSS provides stiffness
data in an easy-to-use spreadsheet, allowing the user to input design strains.
Data is also ideal for 3D ground modelling or BIM applications.

There is excellent published data to prove the equivalence of CSW data with
other more expensive techniques such as downhole seismic testing or large scale
load tests.

Continuous Surface Wave Testing Our Company Close

COST-EFFECTIVE GROUND PROFILING

Continuous Surface Wave (CSW) testing does not require boreholes or the use of
additional plant. Combined with the speed of testing (typically 12 per shift)
this makes it an extremely cost-effective way of providing high quality
stiffness data. CSW also provides non-intrusive shear wave velocity (Vs)
profiles for seismic design, liquefaction assessment and preliminary ground
charachterisation using published correlations with soil parameters. In rock Vs
profiles can be used to assess rock quality and excavatability.

The non-intrusive nature of CSW also means that it is sustainable and low risk,
hence it can be used in many situations where the presence of sensitive services
or structures would make other types of testing impossible. The portable nature
of equipment and speed of testing means it is ideal for use in difficult to
access, time-restricted situations such as the rail environment.

The cost of each CSW test is only around that of a conventional plate load test,
but provides a stiffness profile to depths of 6 to 10m or more of equivalent
quality to the most expensive stiffness measurement techniques.

Continuous Surface Wave Testing Our Company Close




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www.groundstiffnesssurveys.com Open in urlscan Pro 185.119.173.181 Public Scan

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www.groundstiffnesssurveys.com Open in urlscan Pro
185.119.173.181 Public Scan

Form analysis
2 forms found in the DOM