This part covers inelastic deformation and fracture mechanisms of concrete and the effect of confinement in the increase of ductility. The effect of brittle failure under compression and shear is examined as an result of concentration of inelastic deformations. Simple models for confinement, bending and shear are presented where various shear transfer mechanisms are analyzed. Examples for brittle failure of short columns are solved, plastic rotation is calculated and as a final point brittle failure of slabs under punching shear is modeled.