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Need good soils Info & Foundation Info

As one who deals with frost heave, as well as insulation issues, I ask: What are the shallow ground water issues? What are the site drainage conditions? Can shallow or deeper soil moisture continually migrate beneath the slabs or foundation elements and freeze? Will the "ledge below the soil"...

Does the soil have a large sulfate (could be as gypsum) content??

Yes, if excessive quantities are present, it could be a detriment. My father, back in the 1960's, considered a wall base keyway to be an excellent collector of construction debris and such. He taught me to avoid them.

Driven Piling overcome both skin-friction and end bearing during the driving process. The driving process ends when the element has encountered sufficient bearing, side & end OR the depths are beyond the project budget. A drilled pier can be placed under a number of criteria for length but...

A section showing the original ground surface would be nice. Also, any drill hole data and info on the site geology Surely, something this size has a decent study behind it.

Removal of the clay backfill area and replacement with a free-draining material (A57 stone is one such) would be my recommendation. After the wall has dried, the staining on the CMU can be 'washed' off, over a period of time. Assuming the staining in the basement corner is adjacent to an...

and another, for your pleasure

Dik Engineers Testing Laboratories, Phoenix, Ar. 1960

Unless specific sizes are required, such as water movement, soil to or from sand/gravel filter I have used 3",2",1.5",1",3/4",1/2",3/8",#4,#10,#20,#40,#100,#200 and hydrometer for .02 & .005 mm This has worked for me in Western Colorado, USofA

It used to be considered good practice to apply the assumed corrections over a range of expected depths, soil/soft rocks, drilling process/medium and sampling equipment/personnel. Then consider what is actually being accomplished and/or learned. Most of these answers come during the application...

Possibly not confusing the terms. If you have expansive clays beneath the footing, the footing is to be designed to account for the expansive clays AND the cut slope and/or part of the backfill may also exert additional pressure on the wall.

The low border line area of the plasticity chart is not definitive! Over the years, the authors have avoided discussing the CL-ML soils, probably for good reasons.

I have encountered some soils with a PL 1 or 2 points higher than the LL. Usually the silty clays & occ. very low plastic silts.

I am still looking for a HP-35 replacement

What is the soil layer? What is the ground water condition? I could go either way, depending upon the conditions.

Many of the Silty Sands I have encountered are fine-grained. Often interbedded with Sandy Silt. The higher moisture contents can be disturbing to the uninitiated contractors, to say nothing of Testers & Engineers who are used to the coarser sands and gravelly sands. Depending on the type of...

I know it is costly, but the questionable material needs to be replaced. It has become very common in my area, parts of western Colorado, to over-excavate and either rework or completely replace from 1 foot and up to 6 feet of subgrade soil, due to high water table, compressible soil...

The only mention in D6938 for rotating the gauge over an area is in the Oversize correction section, 10.6.1 . I tend to remember this rotation around the probe hole was in the Troxler directions, although so much of my testing concentrated on just getting a good surface for 1 test, which can be...

Search for Compaction Grouting. I have used Hayward Baker for a couple of challenging projects. If you can= find a relatively local Specialty Contractor and discuss the issues, you may learn a lot, real quick. I have found that while trying to spec the grout sounds real good, a lot of local...