I do a lot of slope stability work in clays and always ask for ring shear testing. In some soils I get very different results (normally lower, sometimes half) to the direct shear test which, in my opinion, does not give accurate results for slowly moving residual slides. It is also a relatively...
In the UK bottom driven steel tube piles are frequently used for underpinning and small developments. They are normally driven to a set. However, each contractor uses their own pet formula for that set and all formulae that I have come across originate for top driven piles and I have seen no...
