Column Required and Design Strength.
Column required strengths are calculated automatically.
Column design strengths are calculated automatically.
İnternational Design Codes
ACI 318-19 : Column Required and Design Strength
TSC 2018 : Axial Force and Biaxial Moment Interaction for Columns Column Shear Design Forces
Notation in ACI 318-19
D = dead load
E = earthquake load
L = live load
Lr = roof live load
Mn = nominal flexural strength at section, in.-lb
Mu = factored moment at section, in.-lb
Pn = nominal axial compressive strength of member, lb
Pu = factored axial force; to be taken as positive for compression and negative for tension, lb
R = rain load
S = snow load
Tn = nominal torsional moment strength, in.-lb
Tu = factored torsional moment at section, in.-lb
U = strength of a member or cross section required to resist factored loads
Vn = nominal shear strength, lb
Vu = factored shear force at section, lb
W = wind load
ϕ = strength reduction factor