Thanks layad, I will used that advice in my "hard keep going studing mode". So far, I have problems with shallow foundations, I'm trying to make congruency between the CERM formulas and the Six-min problems but they don't match, and if you try to use Das book formulas it is a third result close to the other ones but still different. That's what is frustrating to me trying to resolve a foundation problem but just guessing what formula to used (specially for shape factors).
I have the new book from Ruwan Rajapakse and it seem very easy to understand but still with another not matching result.
If a Geotechnical Engineer or somebody from this Board can help me to undestand the conflict with this issue, I will really appreciate!
e-mail is
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Thanks, and good luck.