Effective Creep Coefficient

φ_{ef} = φ (\infty, t_{0}) \cdot \frac{M_{0 E_{qp}}}{M_{0 Ed}}

φ_ef	effective creep coefficient
φ(∞,t₀)	final value of creep coefficient
M_0Eqp	service moment of first order under quasi-permanent combination of actions
M_0Ed	ultimate moment of first order under combination of design loads (including geometric imperfections)

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