B. COLUMN REINFORCEMENT DETAILS

8 CHAPTER B: COLUMN REINFORCEMENT DETAILS CAMPSY • The reduction factor, r cor , Fy , of the resistance moment F y , cor , of the structural element where corroded reinforcement occurs relative to the resistance moment of the element without corroded reinforcement, F y , is defined as: rcor , Fy = Fy , cor F y = 1, 00 − 1, 30 X cor (F.2) • The reduction factor, r cor , θ y , of the yielding strain, θ y , cor , of of a structural element where corroded reinforcement occurs with respect to the deflection at yield of the element without reinforcement corrosion, θ y , is defined as: rcor , θ y = θy , cor θ = 1, 00 (F.3) y In practice, it is assumed that the deformation in the leakage remains constant regardless of the degree of corrosion. • The reduction factor, r cor , θ u , of the strain at failure, θ u , cor , of of a structural element where corroded reinforcement occurs relative to the deformation at failure of the element without reinforcement corrosion depends on the magnitude of the axial force, v , that stresses it and is defined as: rcor , θu rcor , θu = θu , cor θ u = θu , cor θ u = 1, 00 − 2, 85X = 1, 00 − 3, 50 X cor cor for v ≤ 0, 20 for 0, 20 < v ≤ 0, 40 (F.4.a) (F.4.b) For v > 0, 40 not enough evidence from the literature has been evaluated. It is reasonable, however, to it could be assumed that the values of r cor , θ u would be smaller than those obtained from relation F.4.(b) above. Note that, in each case, θ u , cor will be taken to be greater than or equal to θ y . ADVERTISEMENT For the shear strength of structural members the provisions of Annex 7C of the Regulation apply, where the shear resistance due to the contribution of fasteners ( V w ) is calculated on the basis of their corrosion-reduced cross-sectional area divided by a safety factor of 1,50. For degrees of corrosion fasteners greater 35 %, the following shall apply obtain V w = 0 .