Taken from "geotech" package. Calculate the bearing capacity factor Nq using either the Terzaghi or Vesic methods.
Nq(phi, case = "general", method = "Terzaghi")
| phi | Friction angle in degrees |
|---|---|
| case | "general" or "local" to indicate general or local shear failure ("general" is default) |
| method | "Terzaghi" or "Vesic" ("Terzaghi" is default) |
Bearing capacity factor
Coduto, D.P., Kitch, W.A., and Yeung, M.R. (2016). Foundation Design: Principles and Practices, Pearson, Boston.
Terzaghi, K. (1943). Theoretical Soil Mechanics, John Wiley, New York
Vesic, A.S. (1973). Analysis of Ultimate Loads of Shallow Foundations, ASCE Journal of the Soil Mechanics and Foundations Division, Vol. 99, No. SM1, pp. 45-73.
Nq(phi = 20, case = "local", method = "Terzaghi")#> [1] 3.875274