10A. DIMENSIONING PART 1/4

• 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, 50X 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 elements, 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-section divided by a safety factor of 1,50. For degrees of corrosion of the fasteners greater 35 %, the following shall apply obtain V w = 0 . In the program, the above procedure is carried out automatically by entering the reinforcement details of the beams and columns (see fig. Use CHAPTER A : 'DOG ARMS' and Chapter B : 'STOCK ARMS') the initial and the measured diameter and the programwill automatically calculate the corrosion rate Xcor, the corresponding degradation factors rcor and all the corresponding take-off values (resistances and deformations) depending on the type of analysis.