This is all good information. I was surprised about the bubbling soil but it makes sense. How deep did they have to drill before the bubbling stopped? Our site was covered with asphalt so any bubbling wouldn't have been visible.
On this job that we used the ODEX, we had tried to use rotary...
For those who are familiar with the ODEX-type drilling system, is there any infomation regarding the amount of soil disturbance it causes and relation to blow counts? We just recently used this system for the first time in an alluvial area containing poorly graded sands and gravels. The...
Does anybody have any tips/tricks/advice when it comes to extruding 3" OD Shelby tube samples? The firm I work for is in an area with very little soft, cohesive soils and where there are some, they tend to be stiff. Therefore, we almost exclusively use SPT and California drive type sampling...
