Standard Electronic Friction Cones
Standard electronic friction cones provide qc (tip resistance), fs (sleeve friction) and inclination. The qc is used to determine the strength of the soil. Using qc and fs together allows the determination of the friction ratio, Rf (= fs/qc x 100), which helps identify soil type. Measuring inclination allows the operator to determine if the cone is being bent in the soil, and therefore helps prevent damage. Plots are also corrected for deviation from vertical.
