Bearing Capacity Comparator

All methods: q_ult = c·Nc·sc + q·Nq·sq + 0.5·γ·B·Nγ·sγ, where q = γ·Df. Each uses its own bearing-capacity factors and shape factors (Terzaghi simplified, Meyerhof, Hansen, Vesic). Inclination/depth factors are taken as 1.0 for vertical centric loading at shallow depth.