Sonic Drill Rigs in operation
Sonic Drilling Watch a sonic drill rig buzz through the ground! Sonic drilling down under in New Zealand and Australia!
Geotechnical investigation
How does a sonic drill rig work?
“Sonic drilling is a soil penetration technique that strongly reduces friction on the drill string and drill bit due to liquefaction, inertia effects and a temporary reduction of porosity of the soil”. Text from SonicSampDrill. Boart Longyear
Dynamic Probing Super Heavy – DPSH
Antonio Machado The Dynamic Probing Super Heavy (DPSH) uses a hammer that delivers energy to a rod string by dropping a weight of 63.5kg from a height of 760mm. For soil investigation, the penetrogram can be drawn according to the dynamic resistance (MPa) and the number of blows every 10 or 20 cm (N10 or N20).
Thermal Integrity Profiling
Shannon Theodore The Thermal Integrity Profiler (TIP) uses the heat generated by curing cement to asses the concrete quality drilled shafts or augered cast in place plies.
Dynamic load testing
These methods are based on monitoring the response of a pile subjected to hammer blows applied at the pile head. The measured response parameters are subsequently analysed to give predictions of the soil resistance that would be mobilised by the pile under static load conditions, based on stress wave theory. Text from the Handbook on Pile Load Testing, by the Federation of Piling Specialists. Shannon Theodore
Cross-hole sonic logging for pile testing
Shannon Theodore The Cross-Hole Analyzer determines the quality and consistency of the concrete of drilled shafts, slurry walls, bored piles, cast-in-situ piles and other types of concrete foundations.
Laboratory uniaxial compression test – Granite
Sahar Cohen