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We are working on a mine closure for a small sand and gravel operation. The client has to submit a letter / report from engineer stating that the work will not affect adjacent structures. The work consists of removing a soil berm that was placed around the mined area. It was the overburden...

Thanks do you know if the Perko technical report is available? I did a quick search and did not get good results. I agree the set up for testing is expensive. We will need to have a big demand before we set up in our lab.

We are starting to see more interest in heave prediction using the filter paper soil suction test. Are there papers or spreadsheets out there which present the procedure? Taking the lab data to predicted numbers.

Is there an upper limit generally accepted for the amount of passive pressure that can develop, either for resisting movement in a sheet pile wall or resisting movement in a large drilled pier??

what values of ym for edge and center lift are common and at what values do they result in a slab that is not cost effective?

Looking for a good reference with a reasonable procedure for basement foundation wall design. Also found the following "Structural foundation Designers Manual" by Curtin et al Does anyone have a review to offer on the text??

Foundations on expansive soils by FH Chen Publ. Elsevier

11 % swell is extrememly high, we would typically recommend drilled piers and structural floors on a site with that high of a swell. Deep overexcavations of 8 to 10 feet have also been used. The zone of overexcavation needs to extend one to one form the perimeter of the building.

Looking for general rule on refusal with driven H piles into bedrock (Shale). This is a road bridge project. The site has 30 to 40 feet of soft clays over shale which has 50 blows for 4 inches about 3 to 5 feet into the shale. Have seen 10 to 15 blows for an inch for refusal. Is a minimum...

We are working on a wall around a poloce station and they want it to wihtstand a 15,000 pound vehicle traveling 35 mph. Question: The best waty to analyze the load or force on the wall?? Or any references that address the issue.

Any references for limiting values of lateral pressure for high retaining walls. possibly triangular dist. transitioning to uniform loading to base of wall. Wall height 26 to 30 feet.