Features
- All ConeTec CPTu systems are seismic ready
- Up to 3 geophones per cone (XYZ) axis
- 16 bit data collection
- Multiple shear and compression wave source options
- Offshore ready (sea-bottom mechanical seismic sources)
- >175 m depth capability
- Typically 1m layers are measured and reported, other intervals possible
Advantages
- Most efficient, accurate, and economical method to measure soil Vs and Vp
- Shear wave velocity is a fundamental geotechnical soil parameter collected independently of other CPTu data
- Two independent cyclic liquefaction evaluations may be conducted using a single SCPTu test
- Both Vp and Vs may be collected during a single SCPTu sounding
- Stacked wave arrivals are recorded to ensure repeatability and to increase velocity precision
Applications - Vs
- Earthquake engineering (ie - SHAKE analysis)
- Cyclic liquefaction evaluation (CRR-Vs and CRR-Qt1)
- Vibrating machine foundations
- Deep foundation design (soil-structure modulus)
- Shallow foundation design / settlement (soil modulus)
- Unusual soil identification (ie - cementation)
Applications - Vp
- Soil saturation; Vp drops dramatically when the soil is less than ~98.5% saturated.
- Poisson’s ratio determination
- Gaseous soils (marine silts, bituminous tailings, organics)
- Liquefaction potential is subdued in gaseous soils
- Detecting unsaturated zones
