Smith's Elements of Soil Mechanics. Ian Smith

d_c, d_q, d_γ Depth factors e Void ratio, eccentricity f Settlement coefficient f_s Ultimate skin friction for piles g Gravitational acceleration h Hydraulic head, height, head loss h_c Capillary rise, tension crack depth h_e Equivalent height of soil h_w Excess head i Hydraulic gradient i_c Critical hydraulic gradient i_c, i_q, i_γ Inclination factors k Coefficient of permeability l Length, length of flow path m Stability coefficient m_B, m_L Eurocode 7 load inclination factor parameters m_v Coefficient of volume compressibility n Porosity, stability coefficient p Pressure, mean pressure, mean normal stress p' Mean normal effective stress p_a Active earth pressure p_c Preconsolidation pressure (one‐dimensional)

Equivalent consolidation pressure (isotropic) p_LM Pressuremeter limit pressure p₀ Earth pressure at rest

Preconsolidation pressure (isotropic)

Effective overburden pressure p_p Passive earth pressure q Unit quantity of flow, deviator stress, uniform surcharge, bearing pressure q' Effective deviator stress q_a Allowable bearing pressure q_u Ultimate bearing capacity q_{u net} Net ultimate bearing capacity r Radius, radial distance, finite difference constant r_u Pore pressure ratio s Suction value of soil, stress parameter, settlement s_c, s_q, s_γ Shape factors s_w Corrected drawdown in pumping well t Time, stress parameter u, u_w Pore water pressure u_a Pore air pressure, pore pressure due to σ₃ in a saturated soil u_d Pore pressure due to (σ₁ − σ₃) in a saturated soil u_dst;d Eurocode 7 design value of destabilising total pore water pressure u_i Initial pore water pressure u_t Pore water pressure at toe of sheet pile wall v Velocity, specific volume w Water, or moisture, content w_L Liquid limit w_P Plastic limit w_s Shrinkage limit x Horizontal distance y Vertical, or horizontal, distance z Vertical distance, depth z_a Depth of investigation points z_o Depth of tension crack z_w Depth below water table α Angle, pile adhesion factor, slope of K_f line β Slope angle Γ Eurocode 7 over‐design factor, specific volume at ln p' = 0 γ Unit weight (weight density), shear strain