Civil engineering and structures
Rankine passive earth pressure
Calculates an indicative passive pressure resultant per meter of wall from friction angle and soil unit weight.
Related calculators
Rankine active earth pressure with surcharge
Calculates an indicative active soil and surcharge resultant per meter of wall; it is not retaining-wall design.
Simple lateral earth pressure
Simplified lateral pressure calculator from coefficient, unit weight, and depth; it is not code-based retaining-wall design.
Hydrostatic pressure behind wall
Calculates water-pressure resultant, resultant location, and base pressure for a given water height.
Bearing capacity with manual factors
Calculates q_ult = c*Nc + q*Nq + 0.5*gamma*B*Ngamma from manually supplied factors and multipliers.
Boussinesq point-load stress
Calculates vertical stress σ_z below a point load P at radial distance r and depth z.
U to T_v consolidation approximation
Calculates approximate T_v from U: for U <= 0.60 it uses (pi/4)*U^2, for larger U it uses -0.933*log10(1-U)-0.085.