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105% of a Proctor is very possible. It does not mean that something is wrong. Think about it. A Proctor value is simply a max density for a given amount of compactive energy at a given water content. If more energy is put into compaction than the Proctor value energy, then the resulting...

Dams can certainly play a part in reducing flooding and flood damages. I have not been following the flooding in Asia and do not know what kind of rain events occurred and how widely distributed the rainfall occurred. Dams require valleys to be flooded, you have to store the water somewhere...

As dik said, completely depends on the soil. Therefore to answer your question: Dry: 0 to 50% Moist: 5 to 100% Saturated: 10% to 1000% Good luck.

Options (depending on the specific software) to avoid these very shallow surfaces include: 1. Setting a minimal slide depth. 2. Setting a minimal slide weight. 3. Adding a nominal amount of cohesion to the soil. All of these options require thought and experience so that you don't...

It will depend on the area of the world where the project is located. Different areas, different conditions, result in different indicators for cedar trees. Lacking any other info, I agree with TigerGuy.

If the C-Phi line is linear; then the confining pressures do not matter. However, the line is not linear for all soils across all confining pressures. That said, unless your wall is very tall and your laboratory is VERY good, I would not bother trying to match the confining pressures to the...

I agree with SlideRuleEra. Only time I would recommend a load to the bottom of your footing would be if there was an unbalanced water pressure. In that case, I would use water pressure to the base of the footing.

Thanks geotechgy1. Side forces can make a difference in the calculated FOS and should always be examined to ensure that they are reasonable. As for you example, reporting reasonable degrees of precision is one of my pet peeves. A Smith, side forces going to zero at the top and bottom of a...

The other thing to consider in all of this is: What are you trying to accomplish with your analysis of the slope? If your goal is to show that the proposed slope meets accepted criteria, then you need to run your analysis using the same or at least similar methods as were used to develop the...

A Smith, take a look at Spencer's Method of slices. I don't recall off hand what method(s) it uses to determine the horizontal forces, but it is worth a look. I've used a limit equilibrium software called UTEXAS for over 30 years, different versions over the years. Very different software...

No, not all the same.

I echo the other comments. Some unusual material there. Do more lab testing to better understand the material.

I have always designed braces, corner and cross-lot, for axial plus shelf weight; nothing more. Conner braces tend to be fairly short and I usually use the same material as the wale, so the corner braces usually end up being way over designed. Cross-lot braces are a different matter. My...

@antimatter, There are methods, the alpha method is one. Should be able to find info on the method in any good pile foundation design book. There are also methods discussed in various FHWA publications. As for the length of the shaft capable of developing resistance, for straight shafts, I...

Depends on local practice, but bell to shaft ratio of 2 to 2.5 is fairly common. Bell shape also varies with local practice. Some times the bottom portion of the bell is vertical as stated previously, sometimes all of the bell roof is sloped. Minimum shaft diameter also various, but a min. of...

I've read a couple of different papers that discuss this topic, unfortunately I do not have access right now. I'll look for them next chance I get. My recollection is that there is no one probability of failure related to a slope's factor of safety. There are too many elements that go into...

It can be considered ground improvement, but the question is how much improvement will you get versus how much you need?

Mike, I'll check with Shannon & Wilson, Inc. (Seattle, Washington, USA) and see who they have that would be appropriate and if they are interested. If you don't hear anything from me here by March 18, 2022; then I've got no one for you. Mike

Thanks for the update, I cannot imagine what you are going through and the difficulties in caring for your son. I wish you the best and keep strong. Mike

This type of analysis requires close coordination between the Geotech and the structural to get it right. However, the Geotech is only responsible for what is included in their scope of work. As a result, you may need to amend the Geotechs contract to get this completed.