Determine the factored moment capacity emptymnnbspof the

Question

Determine the factored moment capacity ∅M_n of the rectangular section subjected to interior environmental exposure with an initial deformation in the concrete substrate ε_bi = 0.0060.

The material and geometric data of the section are: concrete, f^'_c = 20.68 MP a, width b = 300 mm, height h = 600 mm, reinforcement depth d = 560 mm; steel reinforcement: As = 602 mm², f_y = 413 MP a; FRP, f^'_fu = 2800 MP a, ε^'_fu = 0.017, E_f = 164000 MP a,b_f = 250 mm, t_f = 0.333 mm, n = 1.