Warnings

The method behind these warnings is in Bearing capacity and Settlement.

• Resultant outside the base ($e_B \ge B/2$ or $e_L \ge L/2$): the footing overturns. There is no contact pressure or bearing capacity, and the bearing check fails with $FS = 0$.
• Base lift-off ($q_{min} < 0$): the resultant is outside the middle third across the width ($e_B > B/6$) or along the length ($e_L > L/6$), or the two eccentricities together lift a corner ($6e_B/B + 6e_L/L > 1$). That edge or corner loses contact with the soil.
• Bearing stratum below the top one: the base rests on a deeper stratum, named in the warning, and $q_u$ uses its $c$ and $\phi$.
• Settlement not computed: the strata it lists have no $E_s$ and $\mu_s$, so there is no settlement check.
• Consolidation not included: it comes with every settlement result, since $S_e$ is the elastic part only.
• Unusual friction angle ($\phi$ above 45°) or unusual elastic modulus (below 1 MPa or above 200 MPa): possible, but more often a typo. The calculation runs, and the warning points at the stratum.