I am currently using a finite element analysis software with the capability to iterate untill no tension in the soil is reported. How does it does it? I don't know. The information on the softaware is limited. Can you help?
In my experience as structural engineer, geotechnical engineers provide me with the admisible bearing preasure of a soil, but often forget to provide the modulus of subgrade reaction.
Is there a direct relation between the modulus of subgrade reaction and the admisible bearing preasure of a soil?
Is it possible to justify that a proper mixture of sand, water and cement (concrete witout coarse aggregate) with strenght of +3000psi, placed pnewmatically (shotcrete) is still concrete and can thus be designed by ACI requirements.