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About Us
We are the sole operator and developer of the Advanced Continuous Surface Wave (ACSW) shear wave velocity testing system
We develop novel approaches for using shear wave data to achieve construction Net Zero, including our unique Validated Independent Base (VIB) system for Observational Method value engineering of spread foundations.
Service Applications
Mineworkings & Natural Cavity Investigations
ACSW can be used to identify areas of lower stiffness associated with collapsed mineworkings or natural cavities. Areas with broken ground of voids can be dinted by changes in the quality data. Using this approach areas of potential shallow mineworkings can be mapped and possible shaft locations confirmed prior to proving by intrusive investigations.
Ground Characterisation & Profiling
The rapid non-intrusive nature of ACSW means that it can be used to supplement conventional investigations to prove more comprehensive site coverage for profiling, even in areas which would be unsuitable for intrusive investigations such as gas or pipeline sites or along railway track. In addition to accurate stiffness data, ACSW data can be correlated with other soil properties such as shear strength.
Control Testing
The Advanced Continuous Surface Wave (ACSW) testing system integrates advanced software with robust hardware to enable fast and accurate non-intrusive stiffness profiling to be undertaken in the construction environment, including in challenging weather conditions. ACSW data can provide on site validation of ground movement or quantifiable test result to support foundation designs which can easily be related to other test results. Testing rapid and can be undertaken around other site activities
Stiffness Investigations
ACSW provide accurate bulk in site very small strain stiffness measurements. Data is comparable to much more expensive testing such as pressure or large scale load tests but can be provided rapidly & cost-effectively. The coverage of ACSW data allows value engineering of structures for the Serviceability Limit State (SLS) and validation of foundation designs during construction. This approach forms the basis of SoilSafe Validated Indecent Base Observation Method design for spread foundations.
Advantages of ACSW Testing
01
Speed
Where access is straightforward, 12 tests per shift or more are normally possible, allowing significant coverage of sites to assess stiffness variation or addressing time limited working (e.g. railroad or highway work). Simple inversion ground stiffness profiles can be generated on site immediately following each test for rapid site assessment.
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02
Accuracy
ACSW testing does not involve the usual compromise between cost and accuracy. There is a wealth of published information to demonstrate ACSW data is as accurate as the most expensive stiffness testing, and often an order of magnitude more accurate than empirical methods.
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03
Low Cost
Each ACSW test costs less than an in-situ CBR Test – but can provide accurate stiffness profiles to up to 60-feet depth, depending on ground conditions. Combined with speed of testing, this means ACSW is a highly economical means of site characterisation for design, control testing or validation.
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04
Ease of use
ACSW test results are graphical and easy to interpret. Layered profiles provided following advanced inversion include a numerical stiffness value for each layer which can be input directly into calculations or models without the need for uncertain empirical relationships.
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05
Low Risk
ACSW does not require excavations, boreholes or the use of heavy equipment. SoilSafe’s system also does not require manual handling of heavy equipment and the system also offers low noise and disturbance compared to intrusive investigations.
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LATEST
PROJECTS
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