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The engineer hasnt had his say yet, however the client requested an investigation depth of 15m, which is very unreasonable.

Weak rock is mostly expected, but gravel and clay could also be faced. The moments should be around 10000 to 20000 kNm, while the vertical force should be around 10000 kN.

For a wind turbine with about 150m length, and a planned foundation B x L = 20m x 20m, is a drilling depth of 40m enough? I looked into field investigation notes online but didn't find a specific one for such a structure. Any engineer that has experience with such field investigation?

Thank you very much for the replies. I'm certainly more confident now. I looked at about 6 consolidation tests, and in 5 out of 6, it results that virgin consolidation will be triggered. I'll definitely talk to a more experienced geotechnical engineer though just to see what he thinks as well.

I calculated the settlements for all three points (left wall, right wall, and middle of the building). I used the existing grade for calculations, so the foundation depths were 4.0m, 5.5m, and 7.0m respectively. The results are as follows: left wall (Df = 4m) -> Elastic settlement = 3cm...

Thank you for your answer f-d. If (hypothetically) I was not anticipating any virgin consolidation from consolidation tests, would you calculate settlements for a flat surface for a foundation depth = 4m?

I am dealing with mostly saturated clay, I anticipate consolidation. The virgin curve seems to start at the load a little over 100 kPa, so most likely yes, virgin consolidation is anticipated.

I'm attching the scaled profile. I ran the slope stability, it checks out fine, the only question is the foundation depth used for calculation (4 or 7)? And should I expect more settlements on the lower side than on the upper side (where it should be 0)?

Thank you for your answers.Ill create a scaled profile and upload it soon. My main dilemma is, now that I know I should start with a level surface, should I generalize that the foundation depth is 4m, 7m, or take an average between the two? I have the dilemma because taking a foundation depth...

Thank you for your answer Eire. I did check for slope stability and the factor of safety is greater than 2. The slope on the upper part is 24% while on the lower part it is 20%. I'm attaching a sketch of how the field will look after building it (marked in red). In the left side of the sketch...

I forgot to include it, the expected loading on the foundation should be around 110-120 kPa.

Hi all! I have a question regarding the settlement analysis of a raft foundation on a sloped field (im attaching a rough sketch). My question is, what should I take as foundation depth when I do the calculations. On one hand, on the side where the foundation depth is 7m, the load of the removed...