Intro to Soil Moduli Briaud
John Atkinson Non Linear Soil Stiffness
Any basic geotechnical textbook section on Consolidation - Das Fundamentals of Geotechnical Engineering, Craig's Soil Mechanics, VNS Murphy, etc.
FHWA Site Investigation Manual, Chapter 6
Navfac Soil Mechanics, Chapter 5 and...
This isn't drilling rig related but for driven piling rigs I noticed that anything electronic / sensor based was the most difficult to repair on remote field jobs. Easy things to repair are anything that's similar to what the crew plays with in their garage or on the farm. Eg. a diesel piling...
Well, you need to get advice from a senior engineer at your firm for a calculation like this.
Personally I do not like using Cc and Cr.
Rather, I would use the results of the oedometer to determine a constrained modulus that is appropriate for the stress range of the current loading + the...
To determine where you can drill, think about the zone of influence of your foundation (using a 2V:1H load distribution or whatever you prefered method is). You should find that it is not absolutely necessary to drill through the abutment itself.
Some testing ideas:
CPT's, particularly with...
In the past I've used 3m as a minimum, but this was primarily for economic reasons (winning jobs), and the risks associated were managed with absurdly conservative parameters.
In glacial areas you can have rafted / floating chunks of bedrock above the actual bedrock surface. British engineers...
There are two possible pathways to answer this question:
One is that the preconsolidation-overconsolidation concept is just a manipulation of data using log scales and the idea that engineers can elucidate a 'preconsolidation pressure', at least in that the idea that you can plot some oedometer...
Who knows! In Canada, structural engineers told me ~50 kN/m on exterior footings. In New Zealand they tell me it's 10 kPa per floor on the footings, regardless of the footing width or the area supported by the footing.
I've often thought the same thing about geotechnical engineering. If you took out some of the other civil courses you could do a 4 year degree including all of the course-based content from a master's program in geotechnical engineering. I'm expecting that within my life time at a minimum a...
Not personally but I know in Alberta EPS fill has been used on a couple of highway projects in muskeg / soft soils, Highway 43 and another one I can't remember. I think they actually had the EPS buried under a meter or so of soil due to frost concerns though not directly as the subgrade. I was...
The plate load test can be quite misleading. In the end I think it might be worse than empirical or semi empirical correlations because the engineer can be fooled into thinking that what happens in the plate load test can be taken as an accurate representation of what will happen with a full...
I've had several projects involving 95% SPMDD specs (had to argue to change the spec from 'maximum dry density' to 'standard proctor maximum dry density' because the specifier believes the standard proctor is the maximum dry density, period.), where compaction was completed with fully loaded...
>The soil is granular with few clay and silt particles (theoretically no problem),
How many is 'few'? Because you can go from 'no frost heave problem' at 5% fines to 'worst case scenario frost heave' at ~20% or so.
Hypothetically if it was 0% fines all you would have is some volume change...
It sounds like the site contractor has had a visit from the XPS salesman who has offered him a weekend at a "training course" in Vegas to make some XPS sales.
