OK Thanks oldestguy, I'll try to get that out today for everyone to see. One important update to this is that I realized during the iterations that replacement of insitu clays IS actually necessary to satisfy short term global stability!
Just further to this, I am using a paper "Bearing Capacity of Footings over Two-Layer Foundation Soils" by Radoslaw, M. dated 1995 that presents an alternative method that should allow us to determine critical depth of ground improvement if I am reading it correctly.
Hey Guys,
Thanks for the input, here are my replies:
fatdad - We have been checking bearing using Terzaghi's as per AASHTO (10.6.3.1.2), with B as the effective width of wall, what you guys are saying about concerns that global is working but bearing isn't makes alot of sense to me. We are...
Hey Guys,
I'm looking at construction of a new MSE wall to support a proposed roadway embankment, so far I've determined that I need to remove and replace existing soft clay soils to satisfy bearing requirements for the wall, however the depth of this clay is on the order of 15 feet before we...
Hey oldestguy, these will be constructed over-water in the wet so there is no possibility of entering the shaft itself to verify. I'm assuming for now the contractor will airlift the base for accumulation and we will verify pre-pour with sounding weight. I'm assuming a SID would be difficult to...
Hey Guys,
Does anyone have any references that quantify the impact of oscillating steel casing on side friction for a drilled shaft, particularly for overconsolidated silts (MH) and clays (CL/CH) with sporadic sand and gravel lenses.
I believe FHWA does not delve into this particularly deeply...
Hey Guys,
I was just wondering if you could help clear the following up for me.
What are the similar qualities of soils that can be found using EFCP and a hand auger/DCP. I know you can find moisture levels with both, but can the shear and compressive strength of a sample be found with the...
