Kelley, SPLutenegger, AJ2024-04-262024-04-262004-0110.1061/~ASCE!1090-0241~2004!130:5~540!https://hdl.handle.net/20.500.14394/5227penetration tests, soil test, skin friction, test procedures, soil strength,Unit skin friction from the standard penetration test supplemented with the measurement of torquearticle