Deep Foundation.

International Design Codes

ACI 318-19 : Deep Foundation per ACI 318-19 with ideCAD

TSC 2018 :

Notation in ACI 318-19

A_g = gross area of concrete section, in²
A_s = area of nonprestressed longitudinal tension reinforcement, in²
d_pile = diameter of pile at footing base, in.
D = dead load
E = earthquake load
E_h = effect of horizontal seismic forces
E_m = seismic load effect including overstrength
E_mh = effect of horizontal seismic forces, including overstrength
E_v = vertical seismic effect applied in the vertical downward directio
f_c^' = specified compressive strength of concrete, psi
f_y = specified yield strength for nonprestressed reinforcement, psi
F = load due to fluids with well-defined pressures and maximum heights;
L = load due to lateral earth pressure, ground water pressure, or pressure of bulk materials;
L_r = roof live load
P_a = maximum allowable compressive strength of a deep foundation member, lb
R = rain load
S = snow load
V_n = nominal shear strength, lb
V_u = factored shear force at section, lb
W = wind load
ϕ = strength reduction factor