Flange failure of chord member due to moment Mₒₚ according to EN 1993-1-8, Table 7.5, row 2

Flange failure of chord member due to moment M_op according to EN 1993-1-8, Table 7.5, row 2

M_{op, i, Rd} = \frac{f_{y 0} \cdot {t_{0}}^{2} \cdot d_{i}}{\sin (θ_{i})} \cdot \frac{2.7}{1 - 0.81 \cdot β} \cdot k_{p} / γ_{M 5}

M_op,i,Rd	Design value of moment resistance of connection for bending out of plane of structural system for structural component i
f_y0	Yield strength of material of a chord member
t₀	Wall thickness of chord cross-section
d_i	Total diameter for CHS components i
θ_i	Enclosed angle between strut i and chord member
β	Ratio of mean diameters or mean widths of strut and chord
k_p	Chord prestress coefficient
y_M5	Partial safety factor

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