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What could cause a CPT and SPT soil behavior to not match up?
It is my understanding that many "low" PI clayey sands behave much like low PI lean silt or lean clay. The material behavior is mostly cohesive (at decent moisture contents) despite being more than 50% retained on the #200. It is true that the flow curve will be fairly steep and in a saturated...- Jimpat
- Post #4
- Forum: Soil testing engineering
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Swell Pressure and Minimum Deadload for Foundation Design
The PVR is the critical issue here, this can not accurately be determined by a single swell/consolidation. The entire soil profile would have to be reviewed test should include current MC, gradations, PI, current dry/wet density and fully saturated/swollen dry/wet densities. However, if you...- Jimpat
- Post #5
- Forum: Soil testing engineering
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UCS on SPT Samples (thread261-429664)
https://www.rimac-tools.com/ Sample is measured and cut in the field? SPT is disturbed for sure but maybe better than nothing or even maybe better than STP/N values (depending on the driller/setup). With the small diameter and disturbance it is probably conservative. I'd hate to see the...- Jimpat
- Post #3
- Forum: Soil testing engineering
