Geotechnical Questions Answered with Excel/ Mathlab

I have a few Geotechnical Questions that l need answered with Excel. Mathlab can be used but preference is Excel.

I need the excel to have functions and reasoning behind the problem to solve it (not too deep but clear). Inputs and outputs of each question should be clear by the use of clear formats. The target inputs are not fixed and need to be able to be changed by the user.

I will supply questions once we start, and I would like the final document in excel.