- Markets
- Oil and gas
- Renewables
- Marine
- Ports and terminals
- Aquaculture
- Bridges
- Civil and construction
- Highway infrastructure
- Rail infrastructure
- JF Strainstall - Structural monitoring
- Products
- Load cells
- Specialist testing equipment
- Hazardous area products
- High temperature load cells
- Line tension monitors
- Measurement and control
- Instrumentation
- Systems and monitoring
- Offshore monitoring
- Wellsite monitoring solutions
- Vessel monitoring
- Container weighing
- Ports and terminals
- Foundation testing
- Conveyor chain tension monitoring
- Centre of gravity
- Geotechnical monitoring
- Data services
- Bridge structural health monitoring
- Load testing
- Construction monitoring
- Environmental monitoring
- Crane monitoring and weighing solutions
- Load pins
- Load links
- Load shackles
- Tension and compression load cells
- Tension load cells
- Train brake force measuring load cells
- Strain rings
- AXILOG II vibration monitoring system
- BGCMAP rate of corrosion tester
- Dynasen shock pressure sensor products
- TDR2/TECO/TECOLITE pile integrity testing systems
- ASLT/SLT2 static pile load testing system
- SIMBAT dynamic pile test system
- PARAS parallel seismic test system
- PLATEMAN plate loading test system
- SB2010 large scale shear box
- SCXT3000 cross hole sonic logging system
- SLFI signal lever force indicator
- SPTMAN SPT hammer energy testing system
- Concrete slab void detection system
- Measurement and control
- Chain Tension Monitoring System™
- Renewables mooring monitoring
- Renewables structural health monitoring
- Renewables condition monitoring
- Jack-up rig leg monitoring
- Swivel load monitoring
- Integrated marine monitoring system
- Tendon tension monitoring system
- Riser Tension Monitoring System™
- Life extension programmes
- Winch tension
- Container Weight System™
- Reach stacker configuration
- CWS straddle carrier
- RTG / RMG weighing system
- CWS™ sidelifter configuration
- RTG Container Weighting Systems: The commercial opportunity of VGM verification
- Container Weight System™ - register your product
- Below ground corrosion assessment
- Bi-directional static load testing
- Cross hole sonic logging
- Dynamic pile testing
- Parallel seismic testing
- Pile integrity testing
- Static load testing
- Sale of the UK operations of Strainstall to the BES Group
- James Fisher Strainstall provides structural health monitoring system for the world’s tallest railway bridge
- James Fisher Strainstall secures Palace of Westminster instrumentation and monitoring contract
- James Fisher combines its asset monitoring capabilities under the new brand of James Fisher Strainstall
- Archive
Cross hole sonic logging
Cross hole sonic logging is a foundation testing method employed by JF Strainstall to verify the structural integrity of drilled concrete piles and shafts.
With decades of experience, JFTS uses the latest SCXT3000 sonic logging system to test, view and store critical data on the structural soundness of the concrete.
JF Strainstall offers a high end analysis service which includes 2D and 3D tomography reporting for fast visualisation of foundation defects.
Cross hole sonic logging methodology
Cross hole sonic logging uses ultra-sonic transducers to measure the transit time of sound in concrete. The test is carried out in foundations where steel tubes have been installed during construction, normally to full depth.
Probes are lowered into the tubes and cables are then raised using the systems electronic logging winch. As the winch wheel turns, the emitter sends an ultra-sonic signal which travels between transducers in selected tubes to a receiver.
The signal is captured and stored as a time / amplitude trace for every 1 centimetre of the pile length. Traces are combined into one sonic profile or waterfall plot, and the first arrival time (FAT) can be used to determine the ultrasonic pulse velocity if the distance between the tubes is also measured.
