Questions 1 (a): The order of the particle sizes is gravel, sand, silt, clay, as the grains are diminishing. Corresponding to its size, poorly graded medium sand owns a high permeability and well-graded boulder clay has low one. The pore pressure can be calculated by the field of stable or unstable permeability at the basis of unchanged sketch for soils. Generally, the lower value of permeability, the easier outputting for water, and then comes out a new ratio of pores.
Hello my friend, thanks for this opportunity.
I am very interested in your project.
As a geologist, I have a good knowledge of GIS for drawing different types of geological figures and have worked for four years in a geological company with abundant experiences.
Please feel free to email me to discuss the project any time. I look forward to hearing from you.
Best regards.
Gyatso