There is a debate raging in my office about the use of a pocket penetrometer in fine grained samples retrieved from a standard split spoon sampler.
I say that this is absolutely wrong as the split spoon sample is disturbed and will not give you "accurate" results. Correlations have been...
This is a COE publication that is no longer available on their website. Does anyone here have a pdf copy of it which they are willing to share?
Thanks in advance.
Out of curiosity, how often do you as a geotech engineer convert field n-values to N60 values? If "it depends", what typical criteria do you use for making the decision to convert or not convert?
I realize that some liquefaction anslysis specifically calls for this conversion, but I'm more...
I've become involved in a project that has had numerous subsurface investigations over the last 7 years and one piece of the data gathered is Pressure Meter testing.
In the results of the PM testing, there are two modulus values provided, unload/reload modulus and initial modulus. The...
Does anyone have a reference which provides typical soil spring modulus for soil and bedrock? I need to provide some information to a structural engineer for some drilled shafts in bedrock.
I've found vague information about the Winkler theory (?), but haven't found any numbers.
Thanks for...
We are working on foundation design recommendations for spread footings that will bear directly on bedrock. Sliding is a concern of the structural engineer and would like recommendations on active and passive pressures if a shear key is installed.
I have lots of references which deal with...
I recall seeing in a publication (maybe NAVFAC) that provided methods of estimating settlement of embankment soils - but alas I can't find the reference now that I need it.
We will be placing approximately 12 feet of engineered fill on top of 50+ blow material. I'm not concerned about...
If you have a large diameter drilled shaft foundation (7 to 8 feet) which is properly embedded in the overlying concrete cap, you have a 'fixed head condition'. This I am comfortable with.
The structural engineer has provided us with axial, shear and moment forces for this pier. By having a...
The IBC requires classification of the upper 100 feet of the soil profile for seismic site classification.
This makes perfect sense for traditional, shallow foundations. However, if your project requires the use of deep foundations (piles) shouldn't the soil profile which is classified begin...
Is there a standard, or common practice, for reducing N values when completing and investigation that goes through gravels that are a larger diameter than the split-spoon sampler?
I've encountered some larger gravels with a mixed silt and sand matrix within a perched watertable. The N value...
I recall seeing a formula that utilized Plasticity information for predicting swell potential in clays. The problem is I no longer have access to those books and my smallish library doesn't have information about this.
Does any one know of the equations that provide information on this...
